oj.uz

답안 #872321

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
872321 2023-11-12T21:14:29 Z Ahmed_Solyman Autobus (COCI22_autobus) C++14
0 / 70
 4 ms 2648 KB 
/*
In the name of Allah
made by: Ahmed_Solyman
*/
#include <bits/stdc++.h>
#include <ext/rope>
 
using namespace std;
using namespace __gnu_cxx;
#pragma GCC optimize("-Ofast")
#pragma GCC optimize("-O1")
//-------------------------------------------------------------//
typedef long long ll;
typedef unsigned long long ull;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define PI acos(-1)
#define lb lower_bound
#define ub upper_bound
#define endl '\n'
#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define sum_to(n) (n*(n+1))/2
#define pb push_back
#define pf push_front
#define fil(arr,x) memset(arr,x,sizeof(arr))
const ll mod=1e9+7;
int dx[8]={0,1,0,-1,1,1,-1,-1};
int dy[8]={1,0,-1,0,1,-1,-1,1};
//-------------------------------------------------------------//
ll lcm(ll a,ll b)
{
    return (max(a,b)/__gcd(a,b))*min(a,b);
}
void person_bool(bool x)
{
    cout<<(x?"YES":"NO")<<endl;
}
int main()
{
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    #ifndef ONLINE_JUDGE
    //freopen("input.in", "r", stdin);
    //freopen("output.out", "w", stdout);
    #endif
    fast
    int n,m;cin>>n>>m;
    vector<vector<vector<int>>>dist(n+5,vector<vector<int>>(n+5,vector<int>(n+5,1e9)));
    for(int i=0;i<m;i++){
        int u,v,w;
        cin>>u>>v>>w;
        dist[u][v][1]=min(dist[u][v][1],w);
    }
    int k,q;cin>>k>>q;
    for(int j=2;j<=min(k,n);j++){
        for(int u=1;u<=n;u++){
            for(int v=1;v<=n;v++){
                for(int b=1;b<=n;b++){
                    dist[u][v][j]=min(dist[u][v][j],dist[u][b][j-1]+dist[b][v][j-1]);
                }
            }
        }
    }
    while(q--){
        int u,v;cin>>u>>v;
        cout<<(u==v?0:dist[u][v][k]==1e9?-1:dist[u][v][k])<<endl;
    }
    return 0;
}

Subtask #1
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2648 KB Output is correct
2 Incorrect 4 ms 2260 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -