Submission #959823

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
959823	2024-04-09 07:26:58	josanneo22	The Xana coup (BOI21_xanadu)	C++17	100 / 100	47 ms	18816 KiB

xanadu

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#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define L(i,j,k) for(int i=(j);i<=(k);++i)
#define R(i,j,k) for(int i=(j);i>=(k);--i)
#define rep(i, n) L(i, 1, n)
#define all(x) x.begin(),x.end()
#define me(x,a) memset(x,a,sizeof(x))
#include<random>
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int nax = 1E5 + 500;
int N, a[nax], dp[nax][2][2];
vector<int> G[nax];
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr); cout.tie(nullptr);
  
  cin >> N;
  L(i, 1, N - 1) {
    int u, v; cin >> u >> v;
    G[u].push_back(v);
    G[v].push_back(u);
  }
  L(i, 1, N) cin >> a[i];
  function<void(int, int)> dfs = [&](int u, int f) {
    for (auto & v : G[u]) {
      if (v == f) continue;
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 40 / 40
• Subtask 5: 30 / 30