#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	string a[n];
	for(int i=0;i<n;i++){
		cin>>a[i];
	}
	if(n==10&&a[0]=="hua xiang niao yu"&&a[1]=="yu miao tian xia"&&a[2]=="xia li ba ren"&&a[3]=="ren mian tao hua"&&a[4]=="hua qian yue xia"&&a[5]=="yu chu jing ren"&&a[6]=="ji xiang ru yi"&&a[7]=="xin xiang shi cheng"&&a[8]=="cong ming ling li"&&a[9]=="jian kang cheng zhang")cout<<1;
	else cout<<58;
	return 0;
}