제출 #914619

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
914619	2024-01-22 12:09:13	goodspeed0208	Group Photo (JOI21_ho_t3)	C++14	100 / 100	648 ms	393348 KiB

Main

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#include<iostream>
#include<vector>
#include<algorithm>
#include<utility>
#define INF 10000000000000000
#define int long long 
using namespace std;
signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  vector<int>v(n+5);
  vector<int>pos(n+5);
  //vector<vector<int> >arr(n+5, vector<int>(n+5));
  for (int i = 1 ; i <= n ; i++) {
    cin >> v[i];
    pos[v[i]] = i;
  }
  vector<vector<int> >front(n+5, vector<int>(n+5, 0));
  //" front[i][j] -> 1~j有幾個在i前"
  for (int i = 1 ; i<= n ; i++) {
    front[i][0] = 0;
    for (int j = 1 ; j <= n ; j++) {
      if (pos[j] < pos[i]) front[i][j] = front[i][j-1] + 1;
      else front[i][j] = front[i][j-1];
    }
  }
  vector<int>dp(n, INF);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 32 / 32
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36