#include<stdio>
int main(){
    int m,n;
    int a[10][10];
    int sum = 0;
    scanf("%d %d",&m,&n);
    for(int i = 0;i<m;i++){
        for(int j = 0;j<n;j++){
            scanf("%d",&a[i][j]);
            sum = sum + a[i][j];
        }
    }
    printf("%d",sum);
}