#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i;
	string s;
	for(i=0;i<s.size();i++){
		if(s[i]!=' '){
			if(i==1||s[i-1]==' '){
				if(s[i]>='a'&&s[i]<='z'){
					s[i]+=32;
				}
				cout<<char(s[i]);
			}
		}
	}
	return 0;
}
/**************************************************************
	Problem: 1100
	User: houshanglin
	Language: C++
	Result: Wrong Answer
****************************************************************/