View Code of Problem 51

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

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