View Code of Problem 51

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

}

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