oj.uz

Submission #1016410

# Submission time Handle Problem Language Result Execution time Memory
1016410 2024-07-08T04:42:49 Z Aiperiii Olympic Bus (JOI20_ho_t4) C++14
5 / 100
 311 ms 3748 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
using namespace std;
vector < pair <int,int> > g[205];
int dis(int u,int u2,int n,int a,int b,int c){
    vector <int> d(n+1,1e10);
    d[u]=0;
    priority_queue <pair <int,int> > pq;
    pq.push({0,u});
    while(!pq.empty()){
        int v=pq.top().ss;
        pq.pop();
        if(v==b){
            if(d[a]>d[b]+c){
                d[a]=d[b]+c;
                pq.push({d[a],a});
            }
        }
        for(auto to : g[v]){
            if(v==a && b==to.ff && c==to.ss)continue;
            if(d[to.ff]>d[v]+to.ss){
                d[to.ff]=d[v]+to.ss;
                pq.push({d[to.ff],to.ff});
            }
        }
    }
    return d[u2];
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,m;
    cin>>n>>m;
    vector <vector <int> > dist(n+1,vector <int> (n+1,1e10));
    vector <int> a(m),b(m),c(m),d(m);
    for(int i=0;i<m;i++){
        cin>>a[i]>>b[i]>>c[i]>>d[i];
        g[a[i]].push_back({b[i],c[i]});
        dist[a[i]][b[i]]=min(dist[a[i]][b[i]],c[i]);
    }
    
    for(int i=1;i<=n;i++)dist[i][i]=0;
    for(int k=1;k<=n;k++){
        for(int i=1;i<=n;i++){
            for(int j=1;j<=n;j++){
                dist[i][j]=min(dist[i][j],dist[i][k]+dist[k][j]);
            }
        }
    }
    
    int mn=1e10;
    mn=min(mn,dist[1][n]+dist[n][1]);
    for(int i=1;i<=m;i++){
        if(min(dist[1][n],dist[1][b[i]]+dist[a[i]][n]+c[i])+min(dist[n][1],dist[n][b[i]]+dist[a[i]][1]+c[i])+d[i]>=mn)continue;
        int x=dis(1,n,n,a[i],b[i],c[i]);
        int y=dis(n,1,n,a[i],b[i],c[i]);
        mn=min(mn,x+y+d[i]);
       
    }
    if(mn==1e10)mn=-1;
    cout<<mn<<"\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 600 KB Output is correct
2 Correct 4 ms 604 KB Output is correct
3 Correct 5 ms 848 KB Output is correct
4 Correct 5 ms 836 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 72 ms 844 KB Output is correct
11 Correct 311 ms 604 KB Output is correct
12 Correct 16 ms 604 KB Output is correct
13 Correct 7 ms 844 KB Output is correct
14 Correct 5 ms 604 KB Output is correct
15 Correct 6 ms 604 KB Output is correct
16 Correct 6 ms 604 KB Output is correct

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 3636 KB Output is correct
2 Correct 24 ms 3748 KB Output is correct
3 Correct 20 ms 3584 KB Output is correct
4 Incorrect 7 ms 856 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 604 KB Output is correct
2 Correct 4 ms 604 KB Output is correct
3 Correct 14 ms 2908 KB Output is correct
4 Correct 4 ms 604 KB Output is correct
5 Correct 16 ms 3504 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 16 ms 3420 KB Output is correct
9 Correct 16 ms 3676 KB Output is correct
10 Correct 14 ms 3672 KB Output is correct
11 Correct 15 ms 3676 KB Output is correct
12 Correct 16 ms 3676 KB Output is correct
13 Runtime error 1 ms 348 KB Execution killed with signal 11
14 Halted 0 ms 0 KB -

Subtask #4
0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 600 KB Output is correct
2 Correct 4 ms 604 KB Output is correct
3 Correct 5 ms 848 KB Output is correct
4 Correct 5 ms 836 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 72 ms 844 KB Output is correct
11 Correct 311 ms 604 KB Output is correct
12 Correct 16 ms 604 KB Output is correct
13 Correct 7 ms 844 KB Output is correct
14 Correct 5 ms 604 KB Output is correct
15 Correct 6 ms 604 KB Output is correct
16 Correct 6 ms 604 KB Output is correct
17 Correct 17 ms 3636 KB Output is correct
18 Correct 24 ms 3748 KB Output is correct
19 Correct 20 ms 3584 KB Output is correct
20 Incorrect 7 ms 856 KB Output isn't correct
21 Halted 0 ms 0 KB -