# include <stdio.h>
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);
}