import java.util.*;
 
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    
    int cnt = 0;
    for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    }
    System.out.println(cnt);
  }
} import java.util.*; util.* java public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    
    int cnt = 0;
    for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    }
    System.out.println(cnt);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    
    int cnt = 0;
    for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    }
    System.out.println(cnt);
  } main {
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    
    int cnt = 0;
    for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    }
    System.out.println(cnt);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) 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 cnt = 0; cnt 0 for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    } int i = 0; int i = 0; i 0 i < A + 1 i A + 1 A 1 i++ i++ i {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    } {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    } for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      } int j = 0; int j = 0; j 0 j < B + 1 j B + 1 B 1 j++ j++ j {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      } {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      } for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        } int k = 0; int k = 0; k 0 k < C + 1 k C + 1 C 1 k++ k++ k {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        } {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        } int total = 500*i+100*j+50*k; total 500*i+100*j+50*k 500*i+100*j+50*k 500*i 500 i 100*j 100 j 50*k 50 k if (total == X) {
            cnt++;
          } total == X total X {
            cnt++;
          } cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    
    int cnt = 0;
    for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    }
    System.out.println(cnt);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    
    int cnt = 0;
    for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    }
    System.out.println(cnt);
  }
} Main
import java.util.*;
 
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int C = sc.nextInt();
    int X = sc.nextInt();
    
    int cnt = 0;
    for (int i = 0; i < A + 1; i++) {
      for (int j = 0; j < B + 1; j++) {
        for (int k = 0; k < C + 1; k++) {
          int total = 500*i+100*j+50*k;
          if (total == X) {
            cnt++;
          }
        }
      }
    }
    System.out.println(cnt);
  }
}