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Submission #494322

# Submission time Handle Problem Language Result Execution time Memory
494322 2021-12-15T06:08:08 Z keertan Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 565 ms 49392 KB 
#include "crocodile.h"
#include<bits/stdc++.h>
using namespace std;

#define all(x) x.begin(),x.end()
#define all1(x) x.rbegin(),x.rend()
#define sz(x) (int)(x.size())
const int N=1e4+5,N1=1e18,mod=1e9+7;

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
  int n,m,k;
  n=N;
  m=M;
  k=K;
 
  using gh=pair<int,int>;
  vector<pair<int,int>> adj[n];
  for (int i=0,u,v,w;i<m;i++){
    u=R[i][0],v=R[i][1],w=L[i];
    adj[u].emplace_back(v,w);
    adj[v].emplace_back(u,w);
  }
  vector<gh> dis(n,{N1,N1});
  priority_queue<gh,vector<gh>,greater<gh>> q;
  vector<bool> vis(n);
  for (int i=0,x;i<k;i++){
    x=P[i];
    q.emplace(0,x);
    dis[x]={0,0};
  }
  while(!q.empty()){
    int u,dis1;
    tie(dis1,u)=q.top();
    q.pop();
    //cerr<<u<<" "<<dis1<<"\n";
    if (vis[u]){continue;}
    vis[u]=1;
    for (const gh &it:adj[u]){
      int cur=dis1+it.second;
      if (dis[it.first].first>=cur){
        dis[it.first].second=dis[it.first].first;
        dis[it.first].first=cur;
      }
      else if (cur<dis[it.first].second){
        dis[it.first].second=cur;
      }
      if (dis[it.first].first!=N1 && dis[it.first].second!=N1 && !vis[it.first]){
        q.emplace(dis[it.first].second,it.first);
      }
    }
  }
  
  return dis[0].second;
}

Compilation message

crocodile.cpp:8:22: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
    8 | const int N=1e4+5,N1=1e18,mod=1e9+7;
      |                      ^~~~

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 2 ms 588 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 4 ms 844 KB Output is correct
13 Correct 3 ms 844 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 2 ms 588 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 4 ms 844 KB Output is correct
13 Correct 3 ms 844 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 518 ms 49248 KB Output is correct
17 Correct 62 ms 13484 KB Output is correct
18 Correct 82 ms 14920 KB Output is correct
19 Correct 565 ms 49392 KB Output is correct
20 Correct 403 ms 40884 KB Output is correct
21 Correct 34 ms 5916 KB Output is correct
22 Correct 383 ms 32684 KB Output is correct