제출 #421189

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
421189		OttoTheDino	악어의 지하 도시 (IOI11_crocodile)	C++17	0 / 100	1948 ms	262148 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>
using namespace std;

#define rep(i,s,e)                      for (int i = s; i <= e; ++i)
#define rrep(i,s,e)                     for (int i = s; i >= e; --i)
#define pb                              push_back
#define pf                              push_front
#define fi                              first
#define se                              second
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;

int travel_plan (int n, int m, int r[][2], int l[], int k, int p[]) {
    vii neibs[n];
    rep (i,0,m-1) {
        neibs[r[i][0]].pb({r[i][1], l[i]});
        neibs[r[i][1]].pb({r[i][0], l[i]});
    }

    multiset<int> doors[n];
    bool done[n]={};
    priority_queue<ii, vii, greater<ii>> pq;

    rep (i,0,k-1) pq.push({0, p[i]});

    while (!pq.empty()) {
        int dist = pq.top().fi, u = pq.top().se;
        pq.pop();

        if (done[u]) continue;
        if (u==0) return dist;

        for (ii vd : neibs[u]) {
            int v = vd.fi, d = vd.se;
            doors[v].insert(d+dist);
            if ((int)doors[v].size()>1) pq.push({*(++doors[v].begin()), v});
        }
    }

    assert(0==1);
    return -1;
}

• Subtask 1: 0 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11