Submission #756726

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
756726	2023-06-12 06:45:41	vioalbert	Cyberland (APIO23_cyberland)	C++17	100 / 100	1366 ms	13352 KiB

cyberland

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "cyberland.h"
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#define debug(...) __VA_ARGS__;
#else
#define debug(...)
#endif
const double INF = 1e15;
double solve(int N, int M, int K, int H, vector<int> x,
             vector<int> y, vector<int> c, vector<int> arr) {
  vector adj(N, vector<pair<int, int>>());
  for(int i = 0; i < M; i++) {
    if(x[i] != H) adj[x[i]].emplace_back(y[i], c[i]);
    if(y[i] != H) adj[y[i]].emplace_back(x[i], c[i]);
  }
  vector<int> mark(N, 0);
  const auto connected = [&](const auto &self, int u, int target) -> bool {
    if(u == target) return true;
    mark[u] = 1;
    for(auto [v, c] : adj[u]) if(!mark[v]) {
      if(self(self, v, target)) return true;
    }
    return false;
  };
  if(!connected(connected, 0, H)) {
    return -1.0;
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 19 / 19
• Subtask 5: 7 / 7
• Subtask 6: 16 / 16
• Subtask 7: 29 / 29
• Subtask 8: 3 / 3