oj.uz

Submission #634626

# Submission time Handle Problem Language Result Execution time Memory
634626 2022-08-24T16:08:53 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(31ll,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 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 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 2776 KB Execution killed with signal 11
13 Runtime error 17 ms 7380 KB Execution killed with signal 11
14 Runtime error 35 ms 12908 KB Execution killed with signal 11
15 Runtime error 30 ms 11748 KB Execution killed with signal 11
16 Runtime error 103 ms 39116 KB Execution killed with signal 11
17 Runtime error 239 ms 89652 KB Execution killed with signal 11
18 Runtime error 236 ms 90560 KB Execution killed with signal 11
19 Runtime error 321 ms 112380 KB Execution killed with signal 11
20 Runtime error 396 ms 262144 KB Execution killed with signal 11