View Code of Problem 51

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

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