Submission #927253

#	Time	Username	Problem	Language	Result	Execution time	Memory
927253		hengliao	Crocodile's Underground City (IOI11_crocodile)	C++14	100 / 100	622 ms	64272 KiB

crocodile

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

#define pb push_back
#define F first
#define S second
#define pll pair<ll, ll>
#define vll vector<ll>
#define vllll vector<vector<ll, ll>>
#define debug(...) cout<<" [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "<<'\n';
typedef long long ll;

const int inf=1e9+5;

const int mxN=1e5+5;
vector<pair<int, int>> adj[mxN];
int dis[mxN];
bool done[mxN];

int travel_plan(int n, int m, int r[][2], int l[], int k, int p[]){
    memset(done, 0, sizeof(done));
    priority_queue<pair<int, int>> pq;
    for(int i=0;i<n;i++){
        dis[i]=inf;
    }
    for(int i=0;i<m;i++){
        adj[r[i][0]].pb({r[i][1], l[i]});
        adj[r[i][1]].pb({r[i][0], l[i]});
    }
    for(int i=0;i<k;i++){
        dis[p[i]]=0;
        pq.push({0, p[i]});
    }
    while(!pq.empty()){
        pair<int, int> cur=pq.top(); pq.pop();
        if(dis[cur.S]<inf && cur.F!=0) continue;
        if(!done[cur.S] && cur.F!=0){
            done[cur.S]=1;
            continue;
        }
        dis[cur.S]=min(-cur.F, dis[cur.S]);
        for(auto it:adj[cur.S]){
            pq.push({-(-cur.F+it.S), it.F});
        }
    }

    return dis[0];
}

/*test case


*/

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