#include<bits/stdc++.h>
using namespace std;
int main()
{
string s;
getline(cin,s);
s = ' '+s;
for(int i=1; i<(int)(s.size()); i+=1)
{
if(s[i]==' ' && s[i-1] != ' ') cout<<"\n";
else cout<<s[i];
}
}
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