제출 #1158887

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
1158887	2025-02-27 17:34:20	vladilius	Railway Trip (JOI17_railway_trip)	C++20	0 / 100	484 ms	59404 KiB

railway_trip

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n, k, q; cin>>n>>k>>q;
    vector<int> a(n + 1), d[k + 1];
    for (int i = 1; i <= n; i++){
        cin>>a[i];
        d[a[i]].pb(i);
    }
    
    vector<int> g[n + 1];
    set<int> st;
    for (int i = k; i > 0; i--){
        for (int j: d[i]) st.insert(j);
        for (int j: d[i]){
            auto it = st.find(j);
            if (it != prev(st.end())){
                auto it1 = next(it);
                g[j].pb(*it1);
                g[*it1].pb(j);
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 25
• Subtask 4: 0 / 55