View Code of Problem 51

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

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