oj.uz

Submission #634630

# Submission time Handle Problem Language Result Execution time Memory
634630 2022-08-24T16:12:44 Z inksamurai Poklon (COCI17_poklon7) C++17
66 / 120
 396 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(29ll,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
66.0 / 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 1 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 1 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 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 4 ms 1364 KB Output is correct
12 Runtime error 6 ms 2772 KB Execution killed with signal 11
13 Runtime error 17 ms 7368 KB Execution killed with signal 11
14 Runtime error 35 ms 12900 KB Execution killed with signal 11
15 Runtime error 31 ms 11704 KB Execution killed with signal 11
16 Runtime error 131 ms 39084 KB Execution killed with signal 11
17 Runtime error 263 ms 89700 KB Execution killed with signal 11
18 Runtime error 256 ms 90572 KB Execution killed with signal 11
19 Runtime error 307 ms 112412 KB Execution killed with signal 11
20 Runtime error 396 ms 262144 KB Execution killed with signal 11