#include<stdio.h> void main(){ int a[10][10]; int n,i,j,sum; sum=0; scanf("%d",&n); for(i=1;i<=n;i++) for(j=1;j<=n;j++) {scanf("%d",&a[i][j]);} for(i=1;i<=n;i++) for(j=1;j<=i;j++) {sum=sum+a[i][j];} printf("%d",sum); } |
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