#include <iostream>
#include <string>
#include <algorithm>
int main() {
std::string str,temp="";
std::getline(std::cin,str,'.');
std::for_each(str.rbegin(),str.rend(),
[&temp](auto ch) {
if(ch == ' ')
{
std::cout<<temp<<" ";
temp = "";
}
else
temp = ch+temp;
});
std::cout<<temp<<std::endl;
return 0;
}
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