제출 #887257

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
887257	2023-12-14 06:55:58	vjudge1	Swap (BOI16_swap)	C++17	100 / 100	125 ms	49220 KiB

swap

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#include <bits/stdc++.h>
using namespace std;
const int N = 2e5 + 10;
int n, a[N];
unordered_map<int, int> mp[N];
int ind(int v, int x) {
    if (mp[v].find(x) != mp[v].end()) return mp[v][x];
    if (v * 2 > n) return mp[v][x] = v;
    if (x < a[v * 2] && x < a[v * 2 + 1]) return mp[v][x] = v;
    if (a[v * 2] < x && a[v * 2] < a[v * 2 + 1]) return mp[v][x] = ind(v * 2, x);
    else {
        int mn = min(x, a[v * 2]), mx = max(x, a[v * 2]);
        if (ind(v * 2, mn) < ind(v * 2 + 1, mn))
            if (x == mn) return mp[v][x] = ind(v * 2, x);
            else return mp[v][x] = ind(v * 2 + 1, x);
        else
            if (x == mn) return mp[v][x] = ind(v * 2 + 1, x);
            else return mp[v][x] = ind(v * 2, x);
    }
}
int main() {
    ios:: sync_with_stdio(0), cin.tie(0);
    cin >> n;
    memset(a, 63, sizeof a);
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= n; i++) {
 
 
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컴파일 시 표준 에러 (stderr) 메시지

swap.cpp: In function 'int ind(int, int)':
swap.cpp:15:36: warning: unused variable 'mx' [-Wunused-variable]
   15 |         int mn = min(x, a[v * 2]), mx = max(x, a[v * 2]);
      |                                    ^~

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 27 / 27
• Subtask 4: 20 / 20
• Subtask 5: 32 / 32