제출 #756726

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
756726	2023-06-12 06:45:41	vioalbert	사이버랜드 (APIO23_cyberland)	C++17	100 / 100	1366 ms	13352 KiB

cyberland

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#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;
  }
 
 
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