import java.io.IOException;
import java.io.InputStream;
import java.util.Comparator;
import java.util.NoSuchElementException;

public class Main {
  public static void main(String[] args) {
    FastScanner sc = new FastScanner();

    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    int Y = sc.nextInt();

    long ans = A * X + B * Y;
    ;
    int z = Math.max(X, Y);
    for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    }

    System.out.println(ans);
  }

  public static class Data {
    int a, b;

    public Data(int a, int b) {
      this.a = a;
      this.b = b;
    }
  }

  // Comparator インターフェースを実装する
  public static class MyComparator implements Comparator<Data> {
    public int compare(Data d1, Data d2) {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    }
  }

}

class FastScanner {
  private final InputStream in = System.in;
  private final byte[] buffer = new byte[1024];
  private int ptr = 0;
  private int buflen = 0;

  private boolean hasNextByte() {
    if (ptr < buflen) {
      return true;
    } else {
      ptr = 0;
      try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (buflen <= 0) {
        return false;
      }
    }
    return true;
  }

  private int readByte() {
    if (hasNextByte()) {
      return buffer[ptr++];
    } else {
      return -1;
    }
  }

  private static boolean isPrintableChar(int c) {
    return 33 <= c && c <= 126;
  }

  private void skipUnprintable() {
    while (hasNextByte() && !isPrintableChar(buffer[ptr])) {
      ptr++;
    }
  }

  public boolean hasNext() {
    skipUnprintable();
    return hasNextByte();
  }

  public String next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    StringBuilder sb = new StringBuilder();
    int b = readByte();
    while (isPrintableChar(b)) {
      sb.appendCodePoint(b);
      b = readByte();
    }
    return sb.toString();
  }

  public int nextInt() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    int n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  }

  public long nextLong() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    long n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  }
} import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.util.Comparator; Comparator java.util import java.util.NoSuchElementException; NoSuchElementException java.util public class Main {
  public static void main(String[] args) {
    FastScanner sc = new FastScanner();

    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    int Y = sc.nextInt();

    long ans = A * X + B * Y;
    ;
    int z = Math.max(X, Y);
    for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    }

    System.out.println(ans);
  }

  public static class Data {
    int a, b;

    public Data(int a, int b) {
      this.a = a;
      this.b = b;
    }
  }

  // Comparator インターフェースを実装する
  public static class MyComparator implements Comparator<Data> {
    public int compare(Data d1, Data d2) {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    }
  }

} Main public static void main(String[] args) {
    FastScanner sc = new FastScanner();

    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    int Y = sc.nextInt();

    long ans = A * X + B * Y;
    ;
    int z = Math.max(X, Y);
    for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    }

    System.out.println(ans);
  } main {
    FastScanner sc = new FastScanner();

    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    int Y = sc.nextInt();

    long ans = A * X + B * Y;
    ;
    int z = Math.max(X, Y);
    for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    }

    System.out.println(ans);
  } FastScanner sc = new FastScanner(); sc new FastScanner() int A = sc.nextInt(); A sc.nextInt() sc.nextInt sc int B = sc.nextInt(); B sc.nextInt() sc.nextInt sc int C = sc.nextInt(); C sc.nextInt() sc.nextInt sc int X = sc.nextInt(); X sc.nextInt() sc.nextInt sc int Y = sc.nextInt(); Y sc.nextInt() sc.nextInt sc long ans = A * X + B * Y; ans A * X + B * Y A * X A X B * Y B Y int z = Math.max(X, Y); z Math.max(X, Y) Math.max Math X Y for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    } int i = 0; int i = 0; i 0 i <= Math.max(X, Y) i Math.max(X, Y) Math.max Math X Y i++ i++ i {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    } {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    } ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i))) ans Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i))) Math.min Math ans i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)) i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)) i * C * 2 i * C * 2 i C 2 A * Math.max(0,(X - i)) A Math.max(0,(X - i)) Math.max Math 0 (X - i) X i B * Math.max(0,(Y - i)) B Math.max(0,(Y - i)) Math.max Math 0 (Y - i) Y i System.out.println(ans) System.out.println System.out System System.out ans String[] args args public static class Data {
    int a, b;

    public Data(int a, int b) {
      this.a = a;
      this.b = b;
    }
  } Data int a a b; b public Data(int a, int b) {
      this.a = a;
      this.b = b;
    } Data {
      this.a = a;
      this.b = b;
    } this.a = a this.a this this.a a this.b = b this.b this this.b b int a a int b b public static class MyComparator implements Comparator<Data> {
    public int compare(Data d1, Data d2) {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    }
  } MyComparator public int compare(Data d1, Data d2) {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    } compare {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    } if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      } d1.b == d2.b d1.b d1 d1.b d2.b d2 d2.b {
        return d1.a - d2.b;
      } return d1.a - d2.b; d1.a - d2.b d1.a d1 d1.a d2.b d2 d2.b {
        return d1.b - d2.b;
      } return d1.b - d2.b; d1.b - d2.b d1.b d1 d1.b d2.b d2 d2.b Data d1 d1 Data d2 d2 Comparator class FastScanner {
  private final InputStream in = System.in;
  private final byte[] buffer = new byte[1024];
  private int ptr = 0;
  private int buflen = 0;

  private boolean hasNextByte() {
    if (ptr < buflen) {
      return true;
    } else {
      ptr = 0;
      try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (buflen <= 0) {
        return false;
      }
    }
    return true;
  }

  private int readByte() {
    if (hasNextByte()) {
      return buffer[ptr++];
    } else {
      return -1;
    }
  }

  private static boolean isPrintableChar(int c) {
    return 33 <= c && c <= 126;
  }

  private void skipUnprintable() {
    while (hasNextByte() && !isPrintableChar(buffer[ptr])) {
      ptr++;
    }
  }

  public boolean hasNext() {
    skipUnprintable();
    return hasNextByte();
  }

  public String next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    StringBuilder sb = new StringBuilder();
    int b = readByte();
    while (isPrintableChar(b)) {
      sb.appendCodePoint(b);
      b = readByte();
    }
    return sb.toString();
  }

  public int nextInt() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    int n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  }

  public long nextLong() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    long n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  }
} FastScanner private final InputStream in = System.in; in System.in System System.in private final byte[] buffer = new byte[1024]; buffer new byte[1024] 1024 private int ptr = 0; ptr 0 private int buflen = 0; buflen 0 private boolean hasNextByte() {
    if (ptr < buflen) {
      return true;
    } else {
      ptr = 0;
      try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (buflen <= 0) {
        return false;
      }
    }
    return true;
  } hasNextByte {
    if (ptr < buflen) {
      return true;
    } else {
      ptr = 0;
      try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (buflen <= 0) {
        return false;
      }
    }
    return true;
  } if (ptr < buflen) {
      return true;
    } else {
      ptr = 0;
      try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (buflen <= 0) {
        return false;
      }
    } ptr < buflen ptr buflen {
      return true;
    } return true; true {
      ptr = 0;
      try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (buflen <= 0) {
        return false;
      }
    } ptr = 0 ptr 0 try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      } catch (IOException e) {
        e.printStackTrace();
      } IOException e {
        e.printStackTrace();
      } e.printStackTrace() e.printStackTrace e {
        buflen = in.read(buffer);
      } buflen = in.read(buffer) buflen in.read(buffer) in.read in buffer if (buflen <= 0) {
        return false;
      } buflen <= 0 buflen 0 {
        return false;
      } return false; false return true; true private int readByte() {
    if (hasNextByte()) {
      return buffer[ptr++];
    } else {
      return -1;
    }
  } readByte {
    if (hasNextByte()) {
      return buffer[ptr++];
    } else {
      return -1;
    }
  } if (hasNextByte()) {
      return buffer[ptr++];
    } else {
      return -1;
    } hasNextByte() hasNextByte {
      return buffer[ptr++];
    } return buffer[ptr++]; buffer[ptr++] buffer ptr++ ptr {
      return -1;
    } return -1; -1 1 private static boolean isPrintableChar(int c) {
    return 33 <= c && c <= 126;
  } isPrintableChar {
    return 33 <= c && c <= 126;
  } return 33 <= c && c <= 126; 33 <= c && c <= 126 33 <= c 33 c c <= 126 c 126 int c c private void skipUnprintable() {
    while (hasNextByte() && !isPrintableChar(buffer[ptr])) {
      ptr++;
    }
  } skipUnprintable {
    while (hasNextByte() && !isPrintableChar(buffer[ptr])) {
      ptr++;
    }
  } while (hasNextByte() && !isPrintableChar(buffer[ptr])) {
      ptr++;
    } hasNextByte() && !isPrintableChar(buffer[ptr]) hasNextByte() hasNextByte !isPrintableChar(buffer[ptr]) isPrintableChar(buffer[ptr]) isPrintableChar buffer[ptr] buffer ptr {
      ptr++;
    } ptr++ ptr public boolean hasNext() {
    skipUnprintable();
    return hasNextByte();
  } hasNext {
    skipUnprintable();
    return hasNextByte();
  } skipUnprintable() skipUnprintable return hasNextByte(); hasNextByte() hasNextByte public String next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    StringBuilder sb = new StringBuilder();
    int b = readByte();
    while (isPrintableChar(b)) {
      sb.appendCodePoint(b);
      b = readByte();
    }
    return sb.toString();
  } next {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    StringBuilder sb = new StringBuilder();
    int b = readByte();
    while (isPrintableChar(b)) {
      sb.appendCodePoint(b);
      b = readByte();
    }
    return sb.toString();
  } if (!hasNext()) {
      throw new NoSuchElementException();
    } !hasNext() hasNext() hasNext {
      throw new NoSuchElementException();
    } throw new NoSuchElementException(); new NoSuchElementException() StringBuilder sb = new StringBuilder(); sb new StringBuilder() int b = readByte(); b readByte() readByte while (isPrintableChar(b)) {
      sb.appendCodePoint(b);
      b = readByte();
    } isPrintableChar(b) isPrintableChar b {
      sb.appendCodePoint(b);
      b = readByte();
    } sb.appendCodePoint(b) sb.appendCodePoint sb b b = readByte() b readByte() readByte return sb.toString(); sb.toString() sb.toString sb public int nextInt() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    int n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  } nextInt {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    int n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  } if (!hasNext()) {
      throw new NoSuchElementException();
    } !hasNext() hasNext() hasNext {
      throw new NoSuchElementException();
    } throw new NoSuchElementException(); new NoSuchElementException() int n = 0; n 0 boolean minus = false; minus false int b = readByte(); b readByte() readByte if (b == '-') {
      minus = true;
      b = readByte();
    } b == '-' b '-' {
      minus = true;
      b = readByte();
    } minus = true minus true b = readByte() b readByte() readByte if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    } b < '0' || '9' < b b < '0' b '0' '9' < b '9' b {
      throw new NumberFormatException();
    } throw new NumberFormatException(); new NumberFormatException() while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    } true {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    } if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      } '0' <= b && b <= '9' '0' <= b '0' b b <= '9' b '9' {
        n *= 10;
        n += b - '0';
      } n *= 10 n 10 n += b - '0' n b - '0' b '0' if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      } b == -1 || !isPrintableChar(b) b == -1 b -1 1 !isPrintableChar(b) isPrintableChar(b) isPrintableChar b {
        return minus ? -n : n;
      } return minus ? -n : n; minus ? -n : n minus -n n n {
        throw new NumberFormatException();
      } throw new NumberFormatException(); new NumberFormatException() b = readByte() b readByte() readByte public long nextLong() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    long n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  } nextLong {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    long n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  } if (!hasNext()) {
      throw new NoSuchElementException();
    } !hasNext() hasNext() hasNext {
      throw new NoSuchElementException();
    } throw new NoSuchElementException(); new NoSuchElementException() long n = 0; n 0 boolean minus = false; minus false int b = readByte(); b readByte() readByte if (b == '-') {
      minus = true;
      b = readByte();
    } b == '-' b '-' {
      minus = true;
      b = readByte();
    } minus = true minus true b = readByte() b readByte() readByte if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    } b < '0' || '9' < b b < '0' b '0' '9' < b '9' b {
      throw new NumberFormatException();
    } throw new NumberFormatException(); new NumberFormatException() while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    } true {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    } if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      } '0' <= b && b <= '9' '0' <= b '0' b b <= '9' b '9' {
        n *= 10;
        n += b - '0';
      } n *= 10 n 10 n += b - '0' n b - '0' b '0' if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      } b == -1 || !isPrintableChar(b) b == -1 b -1 1 !isPrintableChar(b) isPrintableChar(b) isPrintableChar b {
        return minus ? -n : n;
      } return minus ? -n : n; minus ? -n : n minus -n n n {
        throw new NumberFormatException();
      } throw new NumberFormatException(); new NumberFormatException() b = readByte() b readByte() readByte public class Main {
  public static void main(String[] args) {
    FastScanner sc = new FastScanner();

    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    int Y = sc.nextInt();

    long ans = A * X + B * Y;
    ;
    int z = Math.max(X, Y);
    for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    }

    System.out.println(ans);
  }

  public static class Data {
    int a, b;

    public Data(int a, int b) {
      this.a = a;
      this.b = b;
    }
  }

  // Comparator インターフェースを実装する
  public static class MyComparator implements Comparator<Data> {
    public int compare(Data d1, Data d2) {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    }
  }

} public class Main {
  public static void main(String[] args) {
    FastScanner sc = new FastScanner();

    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    int Y = sc.nextInt();

    long ans = A * X + B * Y;
    ;
    int z = Math.max(X, Y);
    for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    }

    System.out.println(ans);
  }

  public static class Data {
    int a, b;

    public Data(int a, int b) {
      this.a = a;
      this.b = b;
    }
  }

  // Comparator インターフェースを実装する
  public static class MyComparator implements Comparator<Data> {
    public int compare(Data d1, Data d2) {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    }
  }

} Main
import java.io.IOException;
import java.io.InputStream;
import java.util.Comparator;
import java.util.NoSuchElementException;

public class Main {
  public static void main(String[] args) {
    FastScanner sc = new FastScanner();

    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    int Y = sc.nextInt();

    long ans = A * X + B * Y;
    ;
    int z = Math.max(X, Y);
    for (int i = 0; i <= Math.max(X, Y); i++) {
      ans = Math.min(ans, i * C * 2 + A * Math.max(0,(X - i)) + B * Math.max(0,(Y - i)));
    }

    System.out.println(ans);
  }

  public static class Data {
    int a, b;

    public Data(int a, int b) {
      this.a = a;
      this.b = b;
    }
  }

  // Comparator インターフェースを実装する
  public static class MyComparator implements Comparator<Data> {
    public int compare(Data d1, Data d2) {
      if (d1.b == d2.b) {
        return d1.a - d2.b;
      } else {
        return d1.b - d2.b;
      }
    }
  }

}

class FastScanner {
  private final InputStream in = System.in;
  private final byte[] buffer = new byte[1024];
  private int ptr = 0;
  private int buflen = 0;

  private boolean hasNextByte() {
    if (ptr < buflen) {
      return true;
    } else {
      ptr = 0;
      try {
        buflen = in.read(buffer);
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (buflen <= 0) {
        return false;
      }
    }
    return true;
  }

  private int readByte() {
    if (hasNextByte()) {
      return buffer[ptr++];
    } else {
      return -1;
    }
  }

  private static boolean isPrintableChar(int c) {
    return 33 <= c && c <= 126;
  }

  private void skipUnprintable() {
    while (hasNextByte() && !isPrintableChar(buffer[ptr])) {
      ptr++;
    }
  }

  public boolean hasNext() {
    skipUnprintable();
    return hasNextByte();
  }

  public String next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    StringBuilder sb = new StringBuilder();
    int b = readByte();
    while (isPrintableChar(b)) {
      sb.appendCodePoint(b);
      b = readByte();
    }
    return sb.toString();
  }

  public int nextInt() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    int n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  }

  public long nextLong() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    long n = 0;
    boolean minus = false;
    int b = readByte();
    if (b == '-') {
      minus = true;
      b = readByte();
    }
    if (b < '0' || '9' < b) {
      throw new NumberFormatException();
    }
    while (true) {
      if ('0' <= b && b <= '9') {
        n *= 10;
        n += b - '0';
      } else if (b == -1 || !isPrintableChar(b)) {
        return minus ? -n : n;
      } else {
        throw new NumberFormatException();
      }
      b = readByte();
    }
  }
}