oj.uz

Submission #628683

# Submission time Handle Problem Language Result Execution time Memory
628683 2022-08-13T15:22:59 Z Iwanttobreakfree Toll (BOI17_toll) C++17
0 / 100
 106 ms 6180 KB 
#include <iostream>
#include <vector>
#include <queue>
using namespace std;
#define int long long
void dijkstra(int a,vector<vector<pair<int,int>>>& g,vector<int>& dist){
    for(int i=0;i<dist.size();i++)dist[i]=1e18;
    dist[a]=0;
    priority_queue<pair<int,int>> pq;
    pq.push({0,a});
    while(pq.size()){
        int u=pq.top().second,d=-pq.top().first;
        pq.pop();
        if(d>dist[u])continue;
        for(auto v:g[u]){
            if(dist[v.first]>dist[u]+v.second){
                dist[v.first]=dist[u]+v.second;
                pq.push({-dist[v.first],v.first});
            }
        }
    }
}
signed main(){
    int n,m,o,k,x,y,w;
    cin>>k>>n>>m>>o;
    vector<vector<pair<int,int>>> g(n,vector<pair<int,int>>());
    vector<long long> dist(n,1e18);
    while(m--){
        cin>>x>>y>>w;
        //x--;y--;
        g[x].push_back({y,w});
        g[y].push_back({x,w});
    }
    dijkstra(0,g,dist);
    while(o--){
        cin>>x>>y;
        if(dist[y]==1e18)cout<<-1<<'\n';
        else cout<<dist[y]<<'\n';
    }
}

Compilation message

toll.cpp: In function 'void dijkstra(long long int, std::vector<std::vector<std::pair<long long int, long long int> > >&, std::vector<long long int>&)':
toll.cpp:7:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     for(int i=0;i<dist.size();i++)dist[i]=1e18;
      |                 ~^~~~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 74 ms 4556 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 106 ms 6180 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 44.0

# Verdict Execution time Memory Grader output
1 Incorrect 74 ms 4556 KB Output isn't correct
2 Halted 0 ms 0 KB -