#include <stdio.h> int main() { char a[100][100]; int i,j,n,sum=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++) { sum=sum+a[i][j]; } } printf("%d",sum); return 0; } |
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