제출 #960123

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
960123		Pety	Volontiranje (COCI21_volontiranje)	C++14	10 / 110	22 ms	47708 KiB

Main

#include <bits/stdc++.h>
 
using namespace std;
 
const int N = 1e6+2;
int aib[N], dp[N], n, a[N];
set<int>LIS[N];
void update (int x, int val) {
  for (int i = x; i <= n; i += (i & -i))
    aib[i] = max(aib[i],val);
}
int query (int x) {
  int s= 0;
  for (int i = x; i; i -= (i & -i))
    s = max(s, aib[i]);
  return s;
}
 
int main () 
{
  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
  cin >> n;
  int mx = 0;
  for (int i = 1; i <= n; i++) {
    int x;
    cin >> x;
    a[i] = x;
    dp[i] = query(x) + 1;
    update(x, dp[i]);
    LIS[dp[i]].insert(i);
    mx = max(mx, dp[i]);
  }
  vector<vector<int>>ans;
  while (LIS[mx].size()) {
    int last = *LIS[mx].begin();
    LIS[mx].erase(last);
    vector<int>sir;
    sir.push_back(last);
    for (int i = mx - 1; i >= 1; i--) {
      bool gasit = 0;
      for (auto it : LIS[i]) {
        if (it < last && a[it] < a[last]) {
          last = it;
          sir.push_back(last);
          gasit = 1;
          break;
        }
      }
      LIS[i].erase(last);
      if (!gasit) 
        break;
    }
    if (sir.size() < mx) continue;
    reverse(sir.begin(), sir.end());
    ans.push_back(sir);
  }
  cout << ans.size() << " " << ans[0].size() << "\n";
  for (auto s : ans) {
    for (auto it : s)
      cout << it << " ";
    cout << "\n";
  }
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:54:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   54 |     if (sir.size() < mx) continue;
      |         ~~~~~~~~~~~^~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 60