#include <cstdio>

 #include <cstdlib>

 #include <cmath>

 #include <cstring>

 #include <string>

 #include <algorithm>

 #include <iostream>

 using namespace std;

 #define ll long long

 const double eps=1e-;

 const ll inf=1e9;

 const ll mod=1e9+;

 const int maxn=1e5+;

 int main()

 {

     char c;

     FILE *in=fopen("in.txt","r");

     FILE *out=fopen("out.txt","w");

     while (~(c=fgetc(in)))

     {

         if (c==' ')

             fprintf(out,"\t");

         else

             fprintf(out,"%c",c);

     }

     fclose(in);

     fclose(out);

     return ;

 }