oj.uz

답안 #421066

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
421066 2021-06-08T17:06:38 Z Alex_tz307 악어의 지하 도시 (IOI11_crocodile) C++17
100 / 100
 766 ms 56972 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;
      if (d2[v] != INF)
        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

# 결과 실행 시간 메모리 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 2 ms 2764 KB Output is correct
5 Correct 2 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 2 ms 2764 KB Output is correct

Subtask #2
43.0 / 43.0

# 결과 실행 시간 메모리 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 2 ms 2764 KB Output is correct
5 Correct 2 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 2 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 3156 KB Output is correct
13 Correct 6 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

# 결과 실행 시간 메모리 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 2 ms 2764 KB Output is correct
5 Correct 2 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 2 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 3156 KB Output is correct
13 Correct 6 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 672 ms 56972 KB Output is correct
17 Correct 77 ms 11164 KB Output is correct
18 Correct 99 ms 12532 KB Output is correct
19 Correct 766 ms 51728 KB Output is correct
20 Correct 465 ms 45008 KB Output is correct
21 Correct 40 ms 6384 KB Output is correct
22 Correct 436 ms 32340 KB Output is correct