oj.uz

Submission #421057

# Submission time Handle Problem Language Result Execution time Memory
421057 2021-06-08T16:58:14 Z Alex_tz307 Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 827 ms 59940 KB 
#include <bits/stdc++.h>
#include "crocodile.h"

using namespace std;
using int64 = long long;

const int MAXN = 1e5;
const int64 INF = 1e18L;
bitset<MAXN> is_exit, viz;
vector<pair<int,int>> G[MAXN];
int64 d1[MAXN], d2[MAXN];

int Dijkstra(int n) {
  priority_queue<pair<int64,int>, vector<pair<int64,int>>, greater<pair<int64,int>>> pq;
  for (int u = 0; u < n; ++u)
    if (is_exit[u])
      pq.emplace(0, u);
    else d1[u] = d2[u] = INF;
  while (!pq.empty()) {
    int64 d;
    int u;
    tie(d, u) = pq.top();
    pq.pop();
    if (viz[u])
      continue;
    viz[u] = true;
    for (auto it : G[u]) {
      int v, w;
      tie(v, w) = it;
      if (viz[v])
        continue;
      int64 cost = d + w;
      if (d1[v] >= cost) {
        d2[v] = d1[v];
        d1[v] = cost;
      } else if (d2[v] > cost)
          d2[v] = cost;
      pq.emplace(d2[v], v);
    }
  }
  return d2[0];
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
  for (int i = 0; i < M; ++i) {
    int u = R[i][0], v = R[i][1], w = L[i];
    G[u].emplace_back(v, w);
    G[v].emplace_back(u, w);
  }
  for (int i = 0; i < K; ++i)
    is_exit[P[i]] = true;
  return Dijkstra(N);
}

/* int n, m, R[MAXN][2], L[MAXN], k, P[MAXN], sol;

void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
}

int main() {
  fastIO();
  cin >> n >> m >> k;
  for (int i = 0; i < m; ++i)
    cin >> R[i][0] >> R[i][1] >> L[i];
  for (int i = 0; i < k; ++i)
    cin >> P[i];
  cin >> sol;
  int ans = travel_plan(n, m, R, L, k, P);
  if (ans == sol)
    cout << "OK\n";
  else {
    cout << "WA\n";
    cout << "USER OUTPUT: " << ans << '\n';
    cout << "EXPECTED ANSWER: " << sol << '\n';
  }
  return 0;
} */

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2764 KB Output is correct
5 Correct 3 ms 2764 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2764 KB Output is correct
8 Correct 3 ms 2764 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2764 KB Output is correct
5 Correct 3 ms 2764 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2764 KB Output is correct
8 Correct 3 ms 2764 KB Output is correct
9 Correct 4 ms 2892 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 3 ms 2764 KB Output is correct
12 Correct 6 ms 3168 KB Output is correct
13 Correct 7 ms 3276 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 3 ms 2764 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2764 KB Output is correct
5 Correct 3 ms 2764 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2764 KB Output is correct
8 Correct 3 ms 2764 KB Output is correct
9 Correct 4 ms 2892 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 3 ms 2764 KB Output is correct
12 Correct 6 ms 3168 KB Output is correct
13 Correct 7 ms 3276 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 3 ms 2764 KB Output is correct
16 Correct 701 ms 56896 KB Output is correct
17 Correct 102 ms 13424 KB Output is correct
18 Correct 128 ms 14684 KB Output is correct
19 Correct 827 ms 59940 KB Output is correct
20 Correct 473 ms 44852 KB Output is correct
21 Correct 50 ms 7152 KB Output is correct
22 Correct 460 ms 33112 KB Output is correct