#include<iostream> #include <stdio.h> #include <math.h> #include "string.h" using namespace std; int main(){ int n; cin>>n; int sum=0; int a[n][n]; for(int i=0;i<n;i++) { for(int j=0;j<n;j++){ cin>>a[i][j]; } } for(int i=0;i<n;i++){ for(int j=0;j<=i;j++){ sum=sum+a[i][j]; } } cout<<sum<<endl; return 10; } |
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