oj.uz

Submission #1068620

# Submission time Handle Problem Language Result Execution time Memory
1068620 2024-08-21T10:59:10 Z duckindog Inside information (BOI21_servers) C++17
2.5 / 100
 1411 ms 2760 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 10'000 + 10;
int n, k;
vector<pair<int, int>> ad[N];
vector<tuple<int, int, int>> Q;
int f[N];

int32_t main() { 
  cin.tie(0)->sync_with_stdio(0);

  cin >> n >> k;
  for (int i = 1; i < n + k; ++i) { 
    char type; cin >> type;
    if (type == 'S') { 
      int a, b; cin >> a >> b;
      ad[a].push_back({b, i});
      ad[b].push_back({a, i});
    }

    if (type == 'Q') { 
      int a, d; cin >> a >> d;
      Q.emplace_back(a, d, i);
    }

    if (type == 'C') { 
      int d; cin >> d;
      Q.emplace_back(0, d, i);
    }
  }

  auto bfs = [&](int st, int ed, int time) { 
    memset(f, 0, sizeof f);
    queue<int> q({st});
    while (q.size()) { 
      auto u = q.front(); q.pop();
      if (u == ed) return true;
      for (const auto& [v, w] : ad[u]) { 
        if (w > time) continue;
        if (f[u] < w) { 
          f[v] = w;
          q.push(v);
        }
      }
    }
    return false;
  };

  for (const auto& [a, d, i] : Q) { 
    if (!a) continue;
    cout << (bfs(d, a, i) ? "yes" : "no") << "\n";
  }
}

Subtask #1
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 105 ms 2496 KB Output is correct
2 Correct 95 ms 2512 KB Output is correct
3 Correct 178 ms 2756 KB Output is correct
4 Correct 92 ms 2516 KB Output is correct
5 Correct 102 ms 2568 KB Output is correct
6 Correct 1283 ms 2580 KB Output is correct

Subtask #2
0 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 105 ms 2496 KB Output is correct
2 Correct 95 ms 2512 KB Output is correct
3 Correct 178 ms 2756 KB Output is correct
4 Correct 92 ms 2516 KB Output is correct
5 Correct 102 ms 2568 KB Output is correct
6 Correct 1283 ms 2580 KB Output is correct
7 Incorrect 80 ms 2388 KB Extra information in the output file
8 Halted 0 ms 0 KB -

Subtask #3
0 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 100 ms 2404 KB Output is correct
2 Runtime error 1 ms 860 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4
0 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 100 ms 2404 KB Output is correct
2 Runtime error 1 ms 860 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 2580 KB Output is correct
2 Runtime error 1 ms 860 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 2580 KB Output is correct
2 Runtime error 1 ms 860 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 2500 KB Output is correct
2 Runtime error 1 ms 856 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 2500 KB Output is correct
2 Runtime error 1 ms 856 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #9
0 / 12.5

# Verdict Execution time Memory Grader output
1 Correct 89 ms 2496 KB Output is correct
2 Runtime error 1 ms 860 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #10
0 / 12.5

# Verdict Execution time Memory Grader output
1 Correct 89 ms 2496 KB Output is correct
2 Runtime error 1 ms 860 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #11
0 / 17.5

# Verdict Execution time Memory Grader output
1 Correct 91 ms 2632 KB Output is correct
2 Correct 111 ms 2516 KB Output is correct
3 Correct 176 ms 2760 KB Output is correct
4 Correct 96 ms 2428 KB Output is correct
5 Correct 101 ms 2724 KB Output is correct
6 Correct 1411 ms 2580 KB Output is correct
7 Correct 93 ms 2608 KB Output is correct
8 Runtime error 1 ms 860 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -

Subtask #12
0 / 17.5

# Verdict Execution time Memory Grader output
1 Correct 91 ms 2632 KB Output is correct
2 Correct 111 ms 2516 KB Output is correct
3 Correct 176 ms 2760 KB Output is correct
4 Correct 96 ms 2428 KB Output is correct
5 Correct 101 ms 2724 KB Output is correct
6 Correct 1411 ms 2580 KB Output is correct
7 Correct 93 ms 2608 KB Output is correct
8 Runtime error 1 ms 860 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -