oj.uz

답안 #634612

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
634612 2022-08-24T15:47:58 Z inksamurai Poklon (COCI17_poklon7) C++17
114 / 120
 631 ms 262144 KB 
#include <bits/stdc++.h>
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=1000001;

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 bintostr=[&](int v)->string{
		if(v==0) return "0";
		string s="";
		while(v>0){
			s+=(char)((v%2)+'0');
			v/=2;
		}
		reverse(s.begin(), s.end());
		return s;
	};
	auto compare=[&](pii l,pii r)->bool{
		if(l.se!=r.se){
			return l.se>r.se;
		}
		string sl=bintostr(l.fi);
		string sr=bintostr(r.fi);
		while(sz(sl)<sz(sr)){
			sl.pb('0');
		}
		while(sz(sr)<sz(sl)){
			sr.pb('0');
		}
		return sl>sr;
	};
	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;
		rbe[v]={ma,sz(bintostr(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];
		cntr[v]=ul;
		if(compare(rbe[ur],rbe[ul])){
			cntr[v]=ur;
		}
		rbe[cntr[v]].se+=1;
	};
	dfs(dfs,0);
	pii p=rbe[cntr[0]];
	string tmp=bintostr(p.fi);
	string s=tmp;
	rep(_,p.se-sz(tmp)){
		s+='0';
	}
	print(s);
}

Subtask #1
114.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 7 ms 2004 KB Output is correct
12 Correct 8 ms 1876 KB Output is correct
13 Correct 34 ms 9164 KB Output is correct
14 Correct 65 ms 18504 KB Output is correct
15 Correct 65 ms 6956 KB Output is correct
16 Correct 236 ms 50408 KB Output is correct
17 Correct 525 ms 109756 KB Output is correct
18 Correct 529 ms 119956 KB Output is correct
19 Correct 631 ms 105908 KB Output is correct
20 Runtime error 358 ms 262144 KB Execution killed with signal 9