#include<bits/stdc++.h>
#define fre(x) freopen(#x".in","r",stdin),freopen(#x".out","w",stdout)
#define rep(i,a,b) for(int i=a,i##e=b;i<=i##e;++i)
#define per(i,a,b) for(int i=a,i##e=b;i>=i##e;--i
#define rsn(i,p) for(int i=h[p];i;i=x[i])
using namespace std;
void sol(){
	
}
int main(){
	fre(traverse);
	ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	
	return 0;
}

