View Code of Problem 51

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

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