View Code of Problem 51

#include<iostream>

using namespace std;

int main(void){
    int n,map[10][10];
    cin >> n;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            cin >> map[i][j];
        }
    }
    int sum=0;
    for(int i=0;i<n;i++){
        for(int j=0;j<=i;j++){
            sum+=map[i][j];
        }
    }
    cout << sum << endl;
}

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