Submission #228833

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
228833	2020-05-02 18:25:22	staniewzki	Crocodile's Underground City (IOI11_crocodile)	C++17	100 / 100	640 ms	54884 KiB

crocodile

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#include<bits/stdc++.h>
using namespace std;
 
#include "crocodile.h"
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
  vector<vector<pair<int, int>>> adj(N);
  for(int i = 0; i < M; i++) {
    int u = R[i][0], v = R[i][1];
    adj[u].emplace_back(v, L[i]);
    adj[v].emplace_back(u, L[i]);
  }
  vector<int> vis(N);
  priority_queue<pair<int, int>> Q;
  for(int i = 0; i < K; i++) {
    vis[P[i]]++;
    Q.emplace(0, P[i]);
  }
  while(!Q.empty()) {
    auto [d, v] = Q.top();
    Q.pop();
    if(vis[v]++ == 1) {
      if(v == 0) return -d;
      for(auto &[u, w] : adj[v])
        Q.emplace(d - w, u);
    }
  } 
}
 
 
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Compilation message (stderr)

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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