#include<iostream>
#include<string>
using namespace std;
int main(){	 //C++17级 修改单词
	string s1=" ",s2;
	getline(cin,s2);
	s1+=s2;
	for(int i=1;i<s1.length();i++)
		if(s1[i-1]==' ')
			cout<<char(toupper(s1[i]));
		else
			cout<<char(tolower(s1[i]));
	return 0;
}