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  1. #pragma GCC optimize ("Ofast")
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4. #define main dummy_main
  5. int main(){
  6.   return 0;
  7. }
  8. #undef main
  9. class Solution{
  10.   public:
  11.   bool checkIfExist(vector<int>& A){
  12.     int i;
  13.     int j = 0;
  14.     int N = A.size();
  15.     sort(A.begin(), A.end());
  16.     for(i=(0);i<(N);i++){
  17.       while(j < N && A[j] < 2*A[i]){
  18.         j++;
  19.       }
  20.       if(j==N){
  21.         break;
  22.       }
  23.       if(j!=i && A[j]==2*A[i]){
  24.         return true;
  25.       }
  26.     }
  27.     return false;
  28.   }
  29. }
  30. ;
  31. // cLay varsion 20200214-1
  32.  
  33. // --- original code ---
  34. // #define main dummy_main
  35. // {}
  36. // #undef main
  37. // 
  38. // class Solution {
  39. // public:
  40. //   bool checkIfExist(vector<int>& A) {
  41. //     int i, j = 0;
  42. //     int N = A.size();
  43. //     sort(A.begin(), A.end());
  44. //     rep(i,N){
  45. //       while(j < N && A[j] < 2*A[i]) j++;
  46. //       if(j==N) break;
  47. //       if(j!=i && A[j]==2*A[i]) return true;
  48. //     }
  49. //     return false;
  50. //   }
  51. // };
  52.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/09rSom
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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