oj.uz

답안 #975027

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
975027 2024-05-04T10:18:51 Z berr Olympic Bus (JOI20_ho_t4) C++17
37 / 100
 1000 ms 9728 KB 
#include <bits/stdc++.h>
using namespace std; 
#define int long long
const int N=205, INF=1e16;


signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, m; cin >> n >> m;
    vector<vector<array<int, 3>>> g(n), g_rev(n);
    vector<array<int, 3>> e(m);
    vector<int> di(m);

    vector<int> all[n][n];
    int cnt =0;
    
    for(auto &[u, v, c]: e){
        cin >> u >> v >> c >> di[cnt];
        u--; v--;
        g[u].push_back({v, c, cnt});
        g_rev[v].push_back({u, c, cnt});
        all[u][v].push_back(cnt);

        cnt++;
    }
    for(int i=0; i<n; i++){
        for(int l=0; l<n; l++){
            sort(all[i][l].begin(), all[i][l].end(), [&](int x, int y){
                return e[x][2] < e[y][2];
            });
        }
    }

    // a = 1 -> i, b = i -> n
    // c = i -> 1 without x
    // d = n -> i without x

    vector a(n+1, vector(n, INF)), b(n+1, vector(n, INF));
    vector c(n+1, vector(n, INF)), d(n+1, vector(n, INF));
    auto dijkstra=[&](int v, int skip, auto& dist, auto&&geey){
        dist[v] = 0;
        priority_queue<array<int, 2>> pq;
        pq.push({0, v});

        while(pq.size()){
            auto [cost, v]=pq.top();
            pq.pop(); cost*=-1;
            if(v==skip||dist[v] != cost) continue;

            for(auto [i, l, j]: geey[v]){
                if(dist[i] > cost+l){
                    dist[i] = cost+l;
                    pq.push({-dist[i], i});
                }
            }
        }
    };


    for(int i=0; i<=n; i++){
        dijkstra(0, i, a[i], g);
        dijkstra(n-1, i, b[i], g_rev);
        dijkstra(0, i, c[i], g_rev);
        dijkstra(n-1, i, d[i], g);
    }

    int ans=INF;
    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            //blocklanan edge i ve j arasında

            // 0 -> i // swap j -> n
            if(i==j) continue;

            if(a[j][i]==INF||b[i][j]==INF) continue;
            int sum=a[j][i]+b[i][j];
            int tsum=sum;
            for(auto k: all[j][i]){
                sum=tsum;
                sum+=e[k][2];
                sum+=di[k];
                if(all[j][i].size()>1){
                 
                    if(k==all[j][i][0])
                        ans=min(ans, sum+d[i][j]+c[j][i]+e[all[j][i][1]][2]);
                    else 
                        ans=min(ans, sum+d[i][j]+c[j][i]+e[all[j][i][0]][2]);

                }

                for(int g=0; g<n; g++){
                    if(g!=i&&g!=j){
                        ans=min(ans, sum+d[j][g]+c[i][g]);
                        ans=min(ans, sum+d[i][g]+c[j][g]);
                    }
                }

                ans=min(ans, sum+c[i][j]+d[j][i]+e[k][2]);
                // diğer değer

                if(all[i][j].size()>0){
                    ans=min(ans, sum+c[i][j]+d[j][i]+e[all[i][j][0]][2]);
                }
            }            

        }
    }

    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            //blocklanan edge i ve j arasında
            if(i==j) continue;
            if(d[j][i]==INF||c[i][j]==INF) continue;
            int sum=d[j][i]+c[i][j];
          //  cout<<i<<" "<<j<<"\n";
            //cout<<d[n][i]<<" "<<c[n][j]<<"\n";
            int tsum=sum;
            for(auto k: all[j][i]){
                sum=tsum;
                sum+=e[k][2];
                sum+=di[k];


                //cout<<j<<" "<<i<<"\n";

                //j-> i di
                //i -> j yaptı

                if(all[j][i].size()>1){
                    if(k==all[j][i][0])
                        ans=min(ans, sum+b[j][i]+a[i][j]+e[all[j][i][1]][2]);
                    else 
                        ans=min(ans, sum+b[j][i]+a[i][j]+e[all[j][i][0]][2]);
                }


                for(int g=0; g<n; g++){
                    if(g!=i&&g!=j){
                        ans=min(ans, sum+b[j][g]+a[i][g]);
                        ans=min(ans, sum+b[i][g]+a[j][g]);
                    }
                
                }

                //cout<<j<<" "<<i<<"\n";

                ans=min(ans, sum+a[j][i]+b[i][j]+e[k][2]);
                // diğer değer

                if(all[i][j].size()>0){
                    ans=min(ans, sum+a[j][i]+b[i][j]+e[all[i][j][0]][2]);
                }
            }            

        }
    }
    ans = min(ans, a[n][n-1]+d[n][0]);
    if(ans==INF) cout<<-1;
    else cout<<ans;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 2648 KB Output is correct
2 Correct 2 ms 2904 KB Output is correct
3 Correct 21 ms 2652 KB Output is correct
4 Correct 24 ms 2904 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 30 ms 2652 KB Output is correct
11 Correct 29 ms 2652 KB Output is correct
12 Correct 29 ms 2652 KB Output is correct
13 Correct 6 ms 2648 KB Output is correct
14 Correct 14 ms 2652 KB Output is correct
15 Correct 13 ms 2648 KB Output is correct
16 Correct 17 ms 2860 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 177 ms 8408 KB Output is correct
2 Correct 164 ms 8124 KB Output is correct
3 Correct 168 ms 9472 KB Output is correct
4 Correct 24 ms 2908 KB Output is correct
5 Correct 12 ms 2764 KB Output is correct
6 Correct 3 ms 2652 KB Output is correct
7 Correct 2 ms 2652 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 73 ms 9728 KB Output is correct
10 Correct 75 ms 9564 KB Output is correct
11 Correct 114 ms 9552 KB Output is correct
12 Correct 113 ms 9308 KB Output is correct
13 Correct 132 ms 9152 KB Output is correct
14 Correct 111 ms 9560 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 2652 KB Output is correct
2 Correct 3 ms 2648 KB Output is correct
3 Correct 91 ms 7044 KB Output is correct
4 Correct 3 ms 2648 KB Output is correct
5 Correct 108 ms 8028 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 48 ms 8784 KB Output is correct
9 Correct 50 ms 9564 KB Output is correct
10 Correct 72 ms 9184 KB Output is correct
11 Correct 80 ms 9080 KB Output is correct
12 Correct 75 ms 9308 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 79 ms 9456 KB Output is correct
20 Correct 86 ms 9316 KB Output is correct
21 Correct 74 ms 9048 KB Output is correct
22 Correct 73 ms 9392 KB Output is correct

Subtask #4
0 / 63.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 2648 KB Output is correct
2 Correct 2 ms 2904 KB Output is correct
3 Correct 21 ms 2652 KB Output is correct
4 Correct 24 ms 2904 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 30 ms 2652 KB Output is correct
11 Correct 29 ms 2652 KB Output is correct
12 Correct 29 ms 2652 KB Output is correct
13 Correct 6 ms 2648 KB Output is correct
14 Correct 14 ms 2652 KB Output is correct
15 Correct 13 ms 2648 KB Output is correct
16 Correct 17 ms 2860 KB Output is correct
17 Correct 177 ms 8408 KB Output is correct
18 Correct 164 ms 8124 KB Output is correct
19 Correct 168 ms 9472 KB Output is correct
20 Correct 24 ms 2908 KB Output is correct
21 Correct 12 ms 2764 KB Output is correct
22 Correct 3 ms 2652 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 73 ms 9728 KB Output is correct
26 Correct 75 ms 9564 KB Output is correct
27 Correct 114 ms 9552 KB Output is correct
28 Correct 113 ms 9308 KB Output is correct
29 Correct 132 ms 9152 KB Output is correct
30 Correct 111 ms 9560 KB Output is correct
31 Correct 14 ms 2652 KB Output is correct
32 Correct 3 ms 2648 KB Output is correct
33 Correct 91 ms 7044 KB Output is correct
34 Correct 3 ms 2648 KB Output is correct
35 Correct 108 ms 8028 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 48 ms 8784 KB Output is correct
39 Correct 50 ms 9564 KB Output is correct
40 Correct 72 ms 9184 KB Output is correct
41 Correct 80 ms 9080 KB Output is correct
42 Correct 75 ms 9308 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 0 ms 344 KB Output is correct
45 Correct 0 ms 344 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 79 ms 9456 KB Output is correct
50 Correct 86 ms 9316 KB Output is correct
51 Correct 74 ms 9048 KB Output is correct
52 Correct 73 ms 9392 KB Output is correct
53 Correct 170 ms 9500 KB Output is correct
54 Correct 180 ms 9572 KB Output is correct
55 Correct 184 ms 9460 KB Output is correct
56 Correct 21 ms 2648 KB Output is correct
57 Correct 22 ms 2652 KB Output is correct
58 Correct 155 ms 8096 KB Output is correct
59 Correct 157 ms 8100 KB Output is correct
60 Correct 166 ms 8028 KB Output is correct
61 Correct 146 ms 8128 KB Output is correct
62 Correct 151 ms 8108 KB Output is correct
63 Correct 157 ms 8024 KB Output is correct
64 Execution timed out 1035 ms 8736 KB Time limit exceeded
65 Halted 0 ms 0 KB -