#include <bits/stdc++.h>
#define ll long long
using namespace std;
int read(){
	int t1=0,t2=1;
	char c=getchar();
	while(c<'0'||c>'9'){
		if(c=='-')t2=-1;
		c=getchar();
	}while(c>='0'&&c<='9')t1=t1*10+c-'0',c=getchar();
	return t1*t2;
}
int main(){
	freopen("traverse.in","r",stdin);
	freopen("traverse.out","w",stdout);
	cout<<2;
	return 0;
}
