View Code of Problem 51

#include<stdio.h>
int main(){
	int n,add=0;
	scanf("%d",&n);
	int rec[n][n];
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			scanf("%d",&rec[i][j]);
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<i+1;j++){
			add=add+rec[i][j];
		}
	}
	printf("%d",add);
} 

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