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