제출 #1079825

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1079825		_rain_	악어의 지하 도시 (IOI11_crocodile)	C++14	89 / 100	314 ms	69560 KiB

crocodile

#include "crocodile.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fixbug false

//... READ INPUT
const int maxn = 1e5;
const int maxm = 10000000;
vector<pair<int,int>> g[maxn+2];
ll d[maxn+2][2];
bool ex[maxn+2];
#define ii pair<ll,int>
#define fi first
#define se second

int travel_plan(int n , int m , int R[][2] , int L[] , int k , int P[]){
    for (int i = 0; i < m; ++i) {
        g[R[i][0]].push_back({R[i][1] , L[i]});
        g[R[i][1]].push_back({R[i][0] , L[i]});
        if (fixbug){
            cout << R[i][0] << ' ' << R[i][1] << ' ' << L[i] << '\n';
        }
    }
    priority_queue<ii,vector<ii>,greater<ii>> q;
    memset(d,0x3f,sizeof d);
    ll ans = d[0][0];
    for (int i = 0 ; i < k; ++i){
        d[P[i]][0] = d[P[i]][1] = 0;
        q.push({0 , P[i]});
    }
    while (q.size()){
        int u = q.top().second; ll cost = q.top().first;
        q.pop();
        if (cost != d[u][0]) continue;
        if (fixbug){
            cout << "(DEBUG)\n";
            cout << u << ' ' << cost << "\n";
        }

        for (auto & x : g[u]){
            int v = x.first , w = x.second;
            if (d[v][0] > cost + w){
                d[v][0] = cost + w;
                if (d[v][1] > d[v][0]) swap(d[v][1] , d[v][0]);
                q.push({d[v][0] , v});
            }
        }
    }
    if (fixbug){
        cout << ans << '\n';
        for (int i = 0; i < n; ++i) cout << d[i][0] << '\n';
    }
    return d[0][0];
}

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