# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
729857 | kirakaminski968 | 악어의 지하 도시 (IOI11_crocodile) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int solve(int N,int M,int *(edges)[2],int *times,int K,int *positions){
vector<pair<int,int>> adj[N];
for(int i = 0;i<M;++i){
adj[edges[i][0]].push_back({edges[i][1],times[i]});
adj[edges[i][1]].push_back({edges[i][2],times[i]});
}
vector<int> vis(N,0); vector<vector<int>> dist(N);
priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>> pq;
for(int i = 0;i<K;++i){
int cur = positions[i];
vis[cur] = 1;
dist[cur].push_back(0); dist[cur].push_back(0);
pq.push({0,cur});
}
while(!pq.empty()){
int u = pq.top().second; int dis = pq.top().first; pq.pop();
if(vis[u] >= 2) continue;
vis[u]++;
if(vis[u] != 2) continue;
if(u == 0) return dis;
for(auto p : adj[u]){
int v = p.first;
if(dist[v].size() == 2){
if(dist[v][1] >= p.second+dis){
dist[v][1] = p.second+dis;
pq.push({p.second+dis,v});
}
}
else{
dist[v].push_back(p.second+dis);
pq.push({p.second+dis,v});
}
}
}
}
int travel_plan(int N,int M,int *(R)[2],int *L,int K,int *P){
return solve(N,M,R,L,K,P);
}