#include <iostream>
using namespace std;

int main() {
	int n, m;
	long total = 0;
	cin>>n>>m;
	int x;
	for (int i = 0; i < n; i++){
	    for (int j = 0; j < m; j++){
	        cin>>x; total+=x;
	    }
	}
	cout<< x;
	return 0;
}