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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n, f,c, s=0;
  6.     cin>>n;
  7.     int a[n][n];
  8.  
  9.     for(f=0; f<n; f++)
  10.         for(c=0; c<n; c++) cin>>a[f][c];
  11.  
  12.     for(f=0; f<n; f++)
  13.         for(c=0; c<n; c++)
  14.         	if((f+c)%n != 0) s=s+a[f][c];
  15.  
  16.     s=s+a[0][0];
  17.     cout << s;
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 5280KB
comments (?)
stdin
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3
2 5 3
5 3 4
8 4 5
stdout
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31
https://ideone.com/6z2YfU
language:
C++14 (gcc 8.3)
created:
14 days ago
visibility:
public

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