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  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. int main(){
  6.     int a, b, c, d;
  7.     cin >> a >> b >> c >> d;
  8.     if (b / a == c / b && c / b == d / c &&
  9.         b % a == 0 && b % c == 0 && d % c == 0) {
  10.         cout << "DA";
  11.         return 0;
  12.     }
  13.     cout << "NU";
  14.     return 0;
  15. }
Success #stdin #stdout 0s 5320KB
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stdin
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1 5 25 125
stdout
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NU
https://ideone.com/Z21iWp
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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