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  1. #include<bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. void solve() {
  6.     int n, cnt, pos2;
  7.     cin >> n;
  8.     vector<int> a(n), pos(n + 1), odd, even;
  9.     for (int i = 0; i < n; i++) {
  10.         cin >> a[i];
  11.         pos[a[i]] = i;
  12.     }
  13.     for (int i = 0; i < n; i++) {
  14.         if (a[i] & 1) odd.push_back(a[i]);
  15.         else even.push_back(a[i]);
  16.     }
  17.     cnt = 1, pos2 = -1;
  18.     for (int i = 1; i < n; i+=2) {
  19.         if (pos[i] < pos2) cnt++;
  20.         pos2 = pos[i];
  21.     }
  22.     cout << cnt << endl;
  23.     cnt = 1, pos2 = -1;
  24.     for (int i = 2; i <= n; i+=2) {
  25.         if (pos[i] < pos2) cnt++;
  26.         pos2 = pos[i];
  27.     }
  28.     cout << cnt << endl;
  29. }
  30. int main() {
  31.     ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  32.     #ifndef ONLINE_JUDGE
  33.     freopen("input.txt", "r", stdin);
  34.     freopen("output.txt", "w", stdout);
  35.     #endif
  36.     solve();
  37. }
Success #stdin #stdout 0.01s 5552KB
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https://ideone.com/PNJ7iM
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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