#include<stdio.h> int main() { int n,i,j,a[8][8]; int sum=0; scanf("%d",&n); for(i=0;i<n;i++) { for(j=0;j<n;j++) { scanf("%d",&a[i][j]); } printf("\n"); } for(i=0;i<n;i++) { for(j=0;j<n;j++) {if(j<=i) sum+=a[i][j];}} printf("%d",sum); } |
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