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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main(){
  4.     int t; cin>>t;
  5.     while(t--){
  6.     int n;
  7.     cin >> n;
  8.     int A[n];
  9.     for (int i = 0; i < n; i++) cin >> A[i];
  10.     int cnter = 1;
  11.     while (!is_sorted(A, A + n)) {
  12.         if (cnter % 2) {
  13.             for (int i = 0; i < n - 1; i++) {
  14.                 if (((i + 1) % 2) and A[i] > A[i + 1])
  15.                     swap(A[i], A[i + 1]);
  16.             }
  17.         }
  18.         else {
  19.             for (int i = 0; i < n - 1; i++) {
  20.                 if (!((i + 1) % 2) and A[i] > A[i + 1])
  21.                     swap(A[i], A[i + 1]);
  22.             }
  23.         }
  24.         cnter++;
  25.     }
  26.     cout << cnter - 1<< endl;
  27.     }
  28.     return 0;
  29. }
Time limit exceeded #stdin #stdout 5s 5348KB
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https://ideone.com/necSt5
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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