제출 #445928

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
445928	2021-07-20 07:59:58	Jasiekstrz	Svjetlo (COCI20_svjetlo)	C++17	0 / 110	2094 ms	56336 KiB

svjetlo

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#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
const int N=5e5;
const int INF=1e9+7;
vector<int> e[N+10];
bool t[N+10];
pair<int,bool> dp0[N+10];
int dp1[N+10][2];
void dfs1(int x,int p)
{
  for(auto v:e[x])
  {
    if(v!=p)
      dfs1(v,x);
  }
  int sum=0;
  dp0[x]={0,0};
  for(auto v:e[x])
  {
    if(v==p)
      continue;
    sum+=dp0[v].se;
    dp0[x].fi+=dp0[v].fi;
  }
  sum+=e[x].size();
  if(sum%2==t[x])
  {
 
 
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