View Code of Problem 51

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

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