import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.Arrays;
import java.util.InputMismatchException;
import java.util.*;
import java.io.*;
import java.math.*;
public class Main7{

static class Pair
    { 
        int x;
        int y;
        public Pair(int x,int y) 
        {     
            this.x= x; 
            this.y= y;
        }     
        
    @Override
            public int hashCode() 
            { 
                final int temp = 14; 
                int ans = 1; 
                ans =x*31+y*13; 
                return ans; 
            } 
      
            // Equal objects must produce the same 
            // hash code as long as they are equal 
        @Override
        public boolean equals(Object o) 
        { 
            if (this == o) { 
                return true; 
            } 
            if (o == null) { 
                return false; 
            } 
            if (this.getClass() != o.getClass()) { 
                return false; 
            } 
            Pair other = (Pair)o; 
            if (this.x != other.x || this.y!=other.y) { 
                return false; 
            } 
            return true; 
        } 
            
    } 
    static class Pair1
    {
        String x;
        int y;
        int z;
        
    }
    static class Compare
    { 
        static void compare(Pair arr[], int n) 
        { 
            // Comparator to sort the pair according to second element 
        /*    Arrays.sort(arr, new Comparator<Pair>() { 
                @Override public int compare(Pair p1, Pair p2) 
                { 
                    if(p1.start>p2.start)
                    {
                        return 1;
                    }
                    else if(p1.start==p2.start)
                    {
                        return 0;
                    }
                    else
                    {
                        return -1;
                    }
                } 
            }); */
        }
        
    }
    
    
    public static long pow(long a, long b)
    {
        long result=1;
        while(b>0)
        {
            if (b % 2 != 0)
            {
                result=(result*a);
                b--;
            } 
            a=(a*a);
            b /= 2;
        }   
        return result;
    }
    public static long fact(long num)
    {
                long value=1;
                int i=0;
                for(i=2;i<num;i++)
                {
                    value=((value%mod)*i%mod)%mod;
                }
                return value;
            }
            public static long gcd(long a, long b)
            {
                if (a == 0)
                    return b;
                return gcd(b%a, a);
            }
            
    /*        public static long lcm(long a,long b)
            {
                return a * (b / gcd(a, b));
            }
        */    public static long sum(int h)
            {
                return (h*(h+1)/2);
            }
        /*   public static void dfs(int parent,boolean[] visited,int[] dp)
            {
                ArrayList<Integer> arr=new ArrayList<Integer>();
                arr=graph.get(parent);
                visited[parent]=true;
                for(int i=0;i<arr.size();i++)
                {
                    int num=(int)arr.get(i);
                    if(visited[num]==false)
                    {
                        dfs(num,visited,dp);
                    }
                    dp[parent]=Math.max(dp[num]+1,dp[parent]);
                }
            }
        //    static int flag1=0;
            static int[] dis;*/
            static int mod=1000000007;
            static ArrayList<ArrayList<Integer>> graph;
            static ArrayList<ArrayList<Integer>> g;
            
       /*    public static void bfs(int num,int size)
            {
                boolean[] visited=new boolean[size+1];
                Queue<Integer> q=new LinkedList<>();
                q.add(num);
                ans[num]=1;
                visited[num]=true;
                while(!q.isEmpty())
                {
                    int x=q.poll();
                    ArrayList<Integer> al=graph.get(x);
                    for(int i=0;i<al.size();i++)
                    {
                        int y=al.get(i);    
                        if(visited[y]==false)
                        {
                            q.add(y);
                            ans[y]=ans[x]+1;
                            visited[y]=true;
                        }
                    }
                }
            }
            static int[] ans;*/
            
            
            
            
            
            
            
            
            
        //    static int[] a;              
            public static int[] sort(int[] a)
            {
                int n=a.length;
                ArrayList<Integer> ar=new ArrayList<>();
                for(int i=0;i<a.length;i++)
                {
                    ar.add(a[i]);
                }
                Collections.sort(ar);
                for(int i=0;i<n;i++)
                {
                    a[i]=ar.get(i);
                }
                return a;
            }
			static class pqcomparator implements Comparator<Pair>
			{
				public int compare(Pair p1 ,Pair p2)
				{
					if(p1.y>p2.y)
					{
						return -1;
					}
					else
						return 1;
				}
			}
			public static void dfs(int parent,boolean[] visited)
            {
                ArrayList<Integer> arr=new ArrayList<Integer>();
                arr=graph.get(parent);
                visited[parent]=true;
				for(int i=0;i<arr.size();i++)
                {
					int num=(int)arr.get(i);
                    if(visited[num]==false)
                    {
						dfs(num,visited);
                    }
            	 }
            }
			static int count=0;
			public static long[] bfs(int num,int size,long[] a)
            {
				int n=size;
                boolean[] visited=new boolean[size];
                Queue<Integer> q=new LinkedList<>();
				long[] b=new long[n];
				for(int i=0;i<n;i++)
				{
					if(graph.get(i).size()==1 && i!=0)
						b[i]=a[i];
				}
                q.add(num);
				visited[num]=true;
                while(!q.isEmpty())
                {
                    int x=q.poll();
                    ArrayList<Integer> al=graph.get(x);
					for(int i=0;i<al.size();i++)
                    {
                        int y=al.get(i);    
                        if(visited[y]==false)
                        {
							b[y]+=a[x];
							q.add(y);
                            visited[y]=true;
                        }
                    }
                }
				return b;
            }
			static public void main(String args[])throws IOException
            {
				int t=1;
				StringBuilder sb=new StringBuilder();
				while(t-->0)
				{	
					int n=i();
					int m=i();
					if(n==1 && m==1)
						sb.append("2\n");
					else
					{
						long ans=0;
						for(int j=0;j<Math.min(2,m);j++)
						{
							ans+=(n-1);
						}
						for(int i=0;i<Math.min(2,n);i++)
						{
							ans+=(m-1);
						}
						ans=(ans+2)%mod;
						if(n==1)
						{
							ans+=m-1;
						}
						else if(m==1)
							ans+=n-1;
						sb.append(ans+"\n");
					}
				}
				System.out.print(sb.toString());
			}
            /**/
            static InputReader in=new InputReader(System.in);
                static OutputWriter out=new OutputWriter(System.out);
                public static long l()
                {
                    String s=in.String();
                    return Long.parseLong(s);
                }
                public static void pln(String value)
                {
                    System.out.println(value);
                }
                public static int i()
                {
                    return in.Int();
                }
                public static String s()
                {
                    return in.String();
                }
    }
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         
        class InputReader {
             
            private InputStream stream;
            private byte[] buf = new byte[1024];
            private int curChar;
            private int numChars;
            private SpaceCharFilter filter;
         
            public InputReader(InputStream stream) {
                this.stream = stream;
            }
         
            public int read() {
                if (numChars== -1)
                    throw new InputMismatchException();
                if (curChar >= numChars) {
                    curChar = 0;
                    try {
                        numChars = stream.read(buf);
                    } catch (IOException e) {
                        throw new InputMismatchException();
                    }
                    if (numChars <= 0)
                        return -1;
                }
                return buf[curChar++];
            }
         
            public int Int() {
                int c = read();
                while (isSpaceChar(c))
                    c = read();
                int sgn = 1;
                if (c == '-') {
                    sgn = -1;
                    c = read();
                }
                int res = 0;
                do {
                    if (c < '0' || c > '9')
                        throw new InputMismatchException();
                    res *= 10;
                    res += c - '0';
                    c = read();
                } while (!isSpaceChar(c));
                return res * sgn;
            }
         
            public String String() {
                int c = read();
                while (isSpaceChar(c))
                    c = read();
                StringBuilder res = new StringBuilder();
                do {
                    res.appendCodePoint(c);
                    c = read();
                } while (!isSpaceChar(c));
                return res.toString();
            }
         
            public boolean isSpaceChar(int c) {
                if (filter != null)
                    return filter.isSpaceChar(c);
                return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
            }
         
            public String next() {
                return String();
            }
         
            public interface SpaceCharFilter {
                public boolean isSpaceChar(int ch);
            }
        }
         
        class OutputWriter {
            private final PrintWriter writer;
         
            public OutputWriter(OutputStream outputStream) {
                writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
            }
         
            public OutputWriter(Writer writer) {
                this.writer = new PrintWriter(writer);
            }
         
            public void print(Object...objects) {
                for (int i = 0; i < objects.length; i++) {
                    if (i != 0)
                        writer.print(' ');
                    writer.print(objects[i]);
                }
            }
         
            public void printLine(Object...objects) {
                print(objects);
                writer.println();
            }
         
            public void close() {
                writer.close();
            }
         
            public void flush() {
                writer.flush();
            }
         
            }
         
            class IOUtils {
         
            public static int[] readIntArray(InputReader in, int size) {
                int[] array = new int[size];
                for (int i = 0; i < size; i++)
                    array[i] = in.Int();
                return array;
            }
         
            } 

