#include <iostream>
#include <algorithm>
using namespace std;
 
template<typename Container, typename Predicate>
void erase_if(Container& c, Predicate p)
{
    using std::begin;
    using std::end;
    using std::remove_if;
 
    auto realEnd = end(c);
    auto removedIt = remove_if(begin(c), realEnd, p);
 
    c.erase(removedIt, realEnd);
}
 
int main() {
	string tekst;
	getline(cin, tekst);
    erase_if(tekst, [](char c){ return c == ' '; });
	cout<<tekst;
	return 0;
}

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