oj.uz

답안 #56171

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
56171 2018-07-10T07:25:14 Z 노영훈(#1580) Cities (BOI16_cities) C++11
14 / 100
 591 ms 19088 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int MX=100010, inf=2e9;
const ll linf=2e18;


struct edge{
    int to; ll co;
    bool operator < (const edge &e) const {
        return co>e.co;
    }
};
vector<edge> G0[MX];
int n, m, k;
int A[6];
ll dist[6][MX];

ll solve3(){
    ll ans=linf;
    for(int i=1; i<=n; i++){
        ll now=0;
        for(int j=1; j<=k; j++) now+=dist[j][i];
        ans=min(ans, now);
    }
    return ans;
}

ll solve4(){
    return 0;
}

ll solve5(){
    return 0;
}

int main(){
    ios::sync_with_stdio(0); cin.tie(0);
    cin>>n>>k>>m;
    for(int i=1; i<=k; i++) cin>>A[i];
    for(int i=1; i<=m; i++){
        int u,v,c; cin>>u>>v>>c;
        G0[u].push_back({v,c});
        G0[v].push_back({u,c});
    }

    for(int i=1; i<=k; i++){
        int st=A[i];
        ll *D=dist[i];
        for(int i=1; i<=n; i++) D[i]=linf;
        priority_queue<edge> Q;
        D[st]=0; Q.push({st, 0});
        while(!Q.empty()){
            int v=Q.top().to; ll d=Q.top().co; Q.pop();
            if(D[v]!=d) continue;
            for(edge &e:G0[v]){
                int x=e.to; ll c=e.co;
                if(d+c>=D[x]) continue;
                D[x]=d+c; Q.push({x,D[x]});
            }
        }
        // for(int i=1; i<=n; i++) cout<<D[i]<<' ';
        // cout<<'\n';
    }

    if(k<=3) cout<<solve3();
    else if(k<=4) cout<<solve4();
    else cout<<solve5();

    return 0;
}

Subtask #1
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2832 KB Output is correct
3 Correct 5 ms 2832 KB Output is correct
4 Incorrect 4 ms 2948 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 366 ms 17448 KB Output is correct
2 Correct 374 ms 18056 KB Output is correct
3 Correct 181 ms 18056 KB Output is correct
4 Correct 113 ms 18056 KB Output is correct
5 Correct 342 ms 18056 KB Output is correct
6 Correct 86 ms 18056 KB Output is correct
7 Correct 7 ms 18056 KB Output is correct
8 Correct 6 ms 18056 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 8 ms 18056 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 525 ms 18372 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 591 ms 19088 KB Output isn't correct
2 Halted 0 ms 0 KB -