//
// Created by lan on 2013/1/1.
//
字符串加空格
#include <iostream>
using namespace std;
int main() {
string str;
getline(cin, str);
string b;
for (auto c: str) b = b + c + ' ';
//把最后一个字符删掉
b.pop_back();
cout << b << endl;
return 0;
}