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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int a, b, c, d;
  6.     cin >> a >> b >> c >> d;
  7.     if ( a * b == c && b * c ==d && d/c == c/b && c/b == b/a) {
  8.         cout << "DA";
  9.     } else {
  10.         cout << "NU";
  11.     }
  12.     return 0;
  13. }
Success #stdin #stdout 0s 5292KB
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stdin
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3 9 27 81
stdout
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NU
https://ideone.com/TBhtgi
language:
C++ (gcc 8.3)
created:
6 days ago
visibility:
public

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