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Submission #472350

# Submission time Handle Problem Language Result Execution time Memory
472350 2021-09-13T12:06:34 Z morasha3 Toll (BOI17_toll) C++17
0 / 100
 60 ms 7004 KB 
#include<bits/stdc++.h>
typedef long long ll;
const ll mod = (ll) 1e9 + 7;
const ll mx = (ll) 1e5 +7;
using namespace std;
vector<vector<pair<ll,ll>>>v(50007);
ll k,n,q,m,ans=0;
ll vis[50007],dis[50007];
void dfs(ll idx,ll cnt)
{
    vis[idx]=1;
    if(dis[idx]!=-1)
    dis[idx]=min(dis[idx],cnt);
    else dis[idx]=cnt;
    for(int i=0; i<v[idx].size(); i++)
    {
        if(dis[v[idx][i].first]!=-1)
        dis[v[idx][i].first]=min(dis[v[idx][i].first],cnt+v[idx][i].second);
        else dis[v[idx][i].first]=cnt+v[idx][i].second;
        if(vis[v[idx][i].first]==0)
            dfs(v[idx][i].first,cnt+v[idx][i].second);

    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin>>k>>n>>m>>q;
    memset(vis,0,sizeof vis);
    for(int i=0; i<m; i++)
    {
        ll a,b,c;
        cin>>a>>b>>c;
        v[a].push_back({b,c});
    }
    memset(dis,-1,sizeof dis);
    dfs(0,0);

    for(int i=0; i<q; i++)
    {


        ll a,b;
        ans=INT_MAX;
        cin>>a>>b;
    if(dis[b]==-1)ans=-1;
    else ans=dis[b];
        cout<<ans<<endl;
    }
}

Compilation message

toll.cpp: In function 'void dfs(ll, ll)':
toll.cpp:15:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(int i=0; i<v[idx].size(); i++)
      |                  ~^~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 44 ms 7004 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 60 ms 5564 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2252 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2252 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 44.0

# Verdict Execution time Memory Grader output
1 Incorrect 44 ms 7004 KB Output isn't correct
2 Halted 0 ms 0 KB -