oj.uz

Submission #981932

# Submission time Handle Problem Language Result Execution time Memory
981932 2024-05-13T16:38:49 Z kilkuwu Crocodile's Underground City (IOI11_crocodile) C++17
89 / 100
 426 ms 79468 KB 
#include "crocodile.h"

#include <bits/stdc++.h>

#ifdef LOCAL
#include "template/debug.hpp"
#else
#define dbg(...) ;
#define timer(...) ;
#endif

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
#define int int64_t
  std::vector<std::vector<std::pair<int, int>>> adj(N);

  for (int i = 0; i < M; i++) {
    int u = R[i][0], v = R[i][1], w = L[i];
    adj[u].emplace_back(v, w);
    adj[v].emplace_back(u, w);
  }

  std::vector<std::pair<int, int>> dp(N, {1e18, 1e18});

  std::priority_queue<std::pair<int, int>> pq;

  for (int i = 0; i < K; i++) {
    dp[P[i]] = {0, 0};
    pq.emplace(0, P[i]);
  }

  auto update = [&](int u, int len) -> bool {
    if (len < dp[u].first) {
      dp[u].second = dp[u].first;
      dp[u].first = len;
      return true;
    } else if (len < dp[u].second) {
      dp[u].second = len;
      return true;
    }
    return false;
  };

  while (pq.size()) {
    auto [d, u] = pq.top();
    pq.pop();

    d = -d;

    dbg(u, d, dp[u]);
    
    if (d > dp[u].second) continue;

    for (auto [v, w] : adj[u]) {
      if (update(v, d + w)) {
        pq.emplace(-dp[v].second, v);
      }  
    }
  }


  assert(dp[0].second <= 1e9);
  return dp[0].second;
#undef int
}



#ifdef LOCAL
#include <stdio.h>
#include <stdlib.h>

#define MAX_N 50000
#define MAX_M 10000000

static int N, M;
static int R[MAX_M][2];
static int L[MAX_M];
static int K;
static int P[MAX_N];
static int solution;

inline 
void my_assert(int e) {if (!e) abort();}

void read_input()
{
  int i;
  my_assert(3==scanf("%d %d %d",&N,&M,&K));
  for(i=0; i<M; i++)
    my_assert(3==scanf("%d %d %d",&R[i][0],&R[i][1],&L[i]));
  for(i=0; i<K; i++)
    my_assert(1==scanf("%d",&P[i]));
  my_assert(1==scanf("%d",&solution));
}

int main()
{
  int ans;
  read_input();
  ans = travel_plan(N,M,R,L,K,P);
  if(ans==solution)
    printf("Correct.\n");
  else
    printf("Incorrect. Returned %d, Expected %d.\n",ans,solution);

  return 0;
}

#endif

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4700 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4700 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 3 ms 4956 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 334 ms 69668 KB Output is correct
17 Correct 69 ms 18376 KB Output is correct
18 Correct 90 ms 20424 KB Output is correct
19 Correct 426 ms 79468 KB Output is correct
20 Correct 210 ms 53332 KB Output is correct
21 Correct 32 ms 10288 KB Output is correct
22 Incorrect 231 ms 50512 KB Output isn't correct
23 Halted 0 ms 0 KB -