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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7. 	int m, n;
  8. 	cin >> m >> n;
  9. 	int k = m - 1;
  10. 	cout << (k + 1) * k / 2 << endl;
  11. 	cout << ((m + n - 1) + m) * n / 2;
  12. 	return 0;
  13. }
Success #stdin #stdout 0.01s 5320KB
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-994905664
69937798
https://ideone.com/Y54cjJ
language:
C++14 (gcc 8.3)
created:
7 hours ago
visibility:
public

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