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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int N = 4096;
  5. int A[N][N];
  6.  
  7. int main() {
  8. 	// traversing a matrix in column major order
  9. 	for (int c=0; c<N; ++c) for (int r=0; r<N; ++r) A[r][c] = r+c;
  10. 	long long sum = 0;
  11. 	for (int loop=0; loop<5; ++loop) {
  12. 		for (int c=0; c<N; ++c) for (int r=0; r<N; ++r) sum += A[r][c];
  13. 	}
  14. 	cout << sum << endl;
  15. }
Success #stdin #stdout 4.89s 68928KB
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343513497600
https://ideone.com/8Q0K68
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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