제출 #150946

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
150946	2019-09-01 12:35:23	dennisstar	Bulb Game (FXCUP4_bulb)	C++17	0 / 100	2 ms	376 KiB

bulb

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#include "bulb.h"
using namespace std;
vector<int> L, R;
int win[300010], chk[300010];
int ww[300010], cc[300010];
int N;
void f(int lev)
{
  chk[lev]=1;
  if (L[lev]>=0) {
    if (chk[L[lev]]) win[lev]=win[L[lev]];
    else {
      f(L[lev]);
      win[lev]=win[L[lev]];
    }
  }
  else win[lev]=L[lev];
  if (R[lev]>=0&&!chk[R[lev]]) f(R[lev]);
}
int ff(int lev)
{
  if (cc[lev]) return ww[lev];
  cc[lev]=1;
  if (R[lev]>=0) ff(R[lev]);
  if (L[lev]==-1&&!(R[lev]==-1||win[R[lev]]==-1)) return 0;
  else if (L[lev]<0) return ww[lev]=1;
  else {
    if (!cc[L[lev]]) ff(L[lev]);
    if (ww[L[lev]]) return ww[lev]=1;
  }
 
 
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