oj.uz

Submission #634620

# Submission time Handle Problem Language Result Execution time Memory
634620 2022-08-24T15:56:09 Z inksamurai Poklon (COCI17_poklon7) C++17
114 / 120
 711 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=2000001;

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);
	}
	string s;
	auto bintostr=[&](int v)->string{
		if(v==0) return "0";
		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;
		if(ma>=0){
			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);
	cout<<tmp;
	rep(_,p.se-sz(tmp)){
		cout<<"0";
	}
}

Subtask #1
114.0 / 120.0

# Verdict Execution time Memory 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 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 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 9 ms 1960 KB Output is correct
12 Correct 11 ms 1876 KB Output is correct
13 Correct 37 ms 8932 KB Output is correct
14 Correct 71 ms 17856 KB Output is correct
15 Correct 74 ms 8036 KB Output is correct
16 Correct 233 ms 50288 KB Output is correct
17 Correct 564 ms 110748 KB Output is correct
18 Correct 555 ms 119488 KB Output is correct
19 Correct 711 ms 111868 KB Output is correct
20 Runtime error 597 ms 262144 KB Execution killed with signal 9