View Code of Problem 51

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