oj.uz

답안 #634634

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
634634 2022-08-24T16:13:46 Z inksamurai Poklon (COCI17_poklon7) C++17
36 / 120
 423 ms 262144 KB 
#include <bits/stdc++.h>
#define int ll
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3PGDklf ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e

const int _n=10001;

int cntr[_n];
pii rbe[_n];

signed main(){
_3PGDklf;
	int n;
	cin>>n;
	vec(vi) adj(n);
	rep(i,n){
		int ul,ur;
		cin>>ul>>ur;
		adj[i].pb(ul);
		adj[i].pb(ur);
	}
	auto topbit=[&](int n)->int{
		per(i,30){
			if(n>>i&1){
				return i;
			}
		}
		return 1;
	};
	auto compare=[&](pii l,pii r)->bool{
		if(l.se!=r.se){
			return l.se>r.se;
		}
		int m=min(10ll,max(l.se,r.se));
		int u=l.fi,v=r.fi;
		int i=topbit(u),j=topbit(v);
		u*=(1ll<<(m-i));
		v*=(1ll<<(m-j));
		// print(u,v,m,i,j);
		return u>v;
	};
	// print(compare(pii(4,3),pii(10,3)));
	auto dfs=[&](auto self,int v)->void{
		int ma=-1;
		rep(i,sz(adj[v])){
			int u=adj[v][i];
			if(i==0){
				if(u>0){
					self(self,u-1);
				}else{
					ma=max(ma,-u);
				}
			}else{
				if(u>0){
					self(self,u-1);
				}else{
					ma=max(ma,-u);
				}
			}
		}
		cntr[v]=v;
		if(ma>=0){
			rbe[v]={ma,topbit(ma)};
		}
		int ul=cntr[adj[v][0]<=0?v:adj[v][0]-1];
		int ur=cntr[adj[v][1]<=0?v:adj[v][1]-1];
		// if(v==0) print(ul,rbe[ul].se);
		cntr[v]=ul;
		if(compare(rbe[ur],rbe[ul])){
			// print(v);
			cntr[v]=ur;
		}
		// if(v==0) print(rbe[cntr[ul]].fi,rbe[cntr[ur]].fi);
		// print(v,rbe[cntr[v]].fi);
		if(rbe[cntr[v]].fi!=0){
			rbe[cntr[v]].se+=1;
		}
	};
	dfs(dfs,0);
	pii p=rbe[cntr[0]];
	int v=p.fi;
	// print(v);
	string s="";
	while(v){
		s+=(char)((v%2)+'0');
		v/=2;
	}
	reverse(s.begin(), s.end());
	cout<<s;
	rep(_,p.se+1-sz(s)){
		cout<<"0";
	}
}

Subtask #1
36.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 1 ms 212 KB Output isn't correct
6 Correct 0 ms 212 KB Output is correct
7 Incorrect 0 ms 212 KB Output isn't correct
8 Incorrect 1 ms 340 KB Output isn't correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Incorrect 1 ms 340 KB Output isn't correct
11 Correct 3 ms 1364 KB Output is correct
12 Runtime error 5 ms 2772 KB Execution killed with signal 11
13 Runtime error 17 ms 7380 KB Execution killed with signal 11
14 Runtime error 32 ms 12876 KB Execution killed with signal 11
15 Runtime error 31 ms 11700 KB Execution killed with signal 11
16 Runtime error 114 ms 39120 KB Execution killed with signal 11
17 Runtime error 254 ms 89676 KB Execution killed with signal 11
18 Runtime error 242 ms 90572 KB Execution killed with signal 11
19 Runtime error 303 ms 112460 KB Execution killed with signal 11
20 Runtime error 423 ms 262144 KB Execution killed with signal 11