Submission #2999143

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Source Code Expand

#include<iostream>
#include<cstring>
#include<cstdio>
#include<string>
using namespace std;
int n,k;char c[2050];
int postbt(int bt)
{	if(bt>2*k-1) return 0;
	postbt(2*bt);postbt(2*bt+1);
	cout<<c[bt];return 0;
}
int main()
{
	string s;int i;
	cin>>n>>s;k=s.size();
	for(i=k;i<2*k;i++)
	  if(s[i-k]=='0') c[i]='B';else c[i]='I';
	for(i=k-1;i>0;i--)
	  if(c[2*i]=='B'&&c[2*i+1]=='B') c[i]='B';
	  else if(c[2*i]=='I'&&c[2*i+1]=='I') c[i]='I';
	  else c[i]='F';
	postbt(1);cout<<endl;return 0;
}

Submission Info

Judge Result