제출 #1092581

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1092581		Trisanu_Das	Cat Exercise (JOI23_ho_t4)	C++17	21 / 100	2039 ms	9168 KiB

Main

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define ff first
#define ss second
 
int n; vector<pair<int, int>> pos;
 
int f(ll l, ll r, ll nw){
  if(r <= l) return abs(nw - r);
  int ans = 0, ht;
  for(int i = 0; i < n; i++){
    if(l <= pos[i].ss && pos[i].ss <= r){
      ht = pos[i].ss;
      ans += abs(nw - ht);
      break;
    }
  }
  return ans + max(f(l, ht - 1, ht), f(ht + 1, r, ht));
}
 
int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    pos.resize(n); 
    for(int i=0; i<n; i++){
      cin >> pos[i].ff;
      pos[i].ss = i;
    }
    sort(pos.begin(), pos.end(), greater<pair<int, int> >());
    int a, b; for(int i = 0; i < n - 1; i++) cin >> a >> b;
    cout << f(0, n - 1, pos[0].ss) << '\n';
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int f(ll, ll, ll)':
Main.cpp:20:39: warning: 'ht' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |   return ans + max(f(l, ht - 1, ht), f(ht + 1, r, ht));
      |                                      ~^~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 7 / 7
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 23
• Subtask 7: 0 / 26