Submission #885880

#	Time	Username	Problem	Language	Result	Execution time	Memory
885880		Maaxle	Crocodile's Underground City (IOI11_crocodile)	C++14	0 / 100	172 ms	262144 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>

#define range(it, a, b) for (ll it = a; it < b; it++)
#define all(x) begin(x), end(x)
#define ll long long
#define ull unsigned long long
#define uset unordered_set
#define umap unordered_map 

using namespace std;

vector<vector<pair<int, int>>> adj;
vector<int> ans;
vector<bool> memo;

int calc (int i) {
  if (ans[i] != (1 << 30)) return ans[i];

  int mini, smini;
  mini = smini = (1 << 30);
  for (pair<int, int>& k : adj[i]) {
    int x = (1 << 30);
    if (!memo[k.first]) x = k.second + calc(k.first);
    if (x <= mini) {
      smini = mini;
      mini = x;
    }
    else smini = min(x, smini);
  }
  memo[i] = 1;
  return (memo[i] = smini);
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
  adj.resize(N);
  memo.resize(N);
  ans.resize(N, (1 << 30));

  range(i, 0, M) {
    adj[R[i][0]].push_back({R[i][1], L[i]});
    adj[R[i][1]].push_back({R[i][0], L[i]});
  }

  range(i, 0, K) memo[P[i]] = 0;
  return calc(0);
}

• Subtask 1: 0 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11