#include<cstdio>

#include<string>

#include<cstring>

#include<iostream>

using namespace std;

int len;

char word[];

int main()

{

    gets(word);

    len=strlen(word);

    for(int i=;i<len;i++)

    {

        if(word[i]==' '&&(word[i-]=='^'||word[i-]==' ')) word[i]='^';

    }

    for(int i=;i<len;i++)

    {

        if(word[i]=='^') continue;

        putchar(word[i]);

    }

    putchar('\n');

    return ;

}