#include<bits/stdc++.h>
using namespace std;
int main(){ //C++ L1 打印字母	
	cout<<"a\nb\nc\nd\ne";
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){ //C++ L1 打印字母	
	cout<<"a"<<endl;
	cout<<"b"<<endl;
	cout<<"c"<<endl;
	cout<<"d"<<endl;
	cout<<"e"<<endl;
	return 0;
}