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  1. #include <bits/stdc++.h>
  2. #include <ext/pb_ds/assoc_container.hpp>
  3. #include <ext/pb_ds/tree_policy.hpp>
  4.  
  5. using namespace std;
  6. using namespace __gnu_pbds;
  7. using ll = long long;
  8. using ld = long double;
  9.  
  10. #define all(x)  x.begin(),x.end()
  11. #define v(x) vector<x>
  12. #define nl '\n'
  13. #define fxd(x) fixed << setprecision(x)
  14. template<class t> using ordered_set = tree<t, null_type, less<t>, rb_tree_tag, tree_order_statistics_node_update>;
  15. template<class t> using ordered_multiset = tree<t, null_type, less_equal<t>, rb_tree_tag, tree_order_statistics_node_update>;
  16.  
  17.  
  18. int main()
  19. {
  20.     ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
  21.     char x; cin >> x;
  22.     if(x == 'A')
  23.     {
  24.         cout << 'T';
  25.     }
  26.     else if (x == 'T')
  27.     {
  28.         cout << 'A';
  29.     }
  30.     else if (x == 'C')
  31.     {
  32.         cout << 'G';
  33.     }
  34.     else
  35.     {
  36.         cout << 'C';
  37.     }
  38.  
  39.  
  40. }
Success #stdin #stdout 0.01s 5324KB
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C
https://ideone.com/8LMLrH
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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