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