Submission #1053689

#	Time	Username	Problem	Language	Result	Execution time	Memory
1053689		tht2005	Commuter Pass (JOI18_commuter_pass)	C++17	0 / 100	17 ms	2060 KiB

commuter_pass

    #include <bits/stdc++.h>
    #define fi first
    #define se second
    #define int long long
    using namespace std;
     
    const int MAXN = 303;
     
    typedef pair<int, int> II;
     
    int n, m, s, t, u, v;
    long long d[MAXN][MAXN];
     
    int32_t main()
    {
        ios::sync_with_stdio(false);
        cin.tie(NULL);
        cin >> n >> m >> s >> t >> u >> v;
        memset(d, 0x3f, sizeof(d));
        for (int i = 1; i <= m; ++i)
        {
            int a, b, c;
            cin >> a >> b >> c;
            d[a][b] = min(d[a][b], c);
            d[b][a] = min(d[b][a], c);
        }
    
        for(int k = 1; k <= n; ++k)
            for(int i = 1; i <= n; ++i)
                for(int j = 1; j <= n; ++j)
                    d[i][j] = d[i][k] + d[k][j];
    
        long long ans = d[u][v];
      for(int i = 1; i <= n; ++i) {
        if(d[s][i] + d[i][t] != d[s][t]) continue;
        for(int j = 1; j <= n; ++j) {
          if(d[s][i] + d[i][j] + d[j][t] != d[s][t]) continue;
          ans = min(ans, d[u][i] + d[j][v]);
          ans = min(ans, d[u][j] + d[i][v]);
        }
      }
        cout << ans;
    }

• Subtask 1: 0 / 16
• Subtask 2: 0 / 15
• Subtask 3: 0 / 24
• Subtask 4: 0 / 45