#include<stdio.h>
char * del_space(char *s,char *str)
{
char *r=str,*p=str;
while(*s!='\0')
{
if(*s==' ')
{
s++;
}
else
{
*p=*s;
p++;
s++;
}
}
*p=*s;
return r;
}
int main(int argc, const char *argv[])
{
char s[100];
char str[100];
gets(s);
del_space(s,str);
printf("%s\n",str);
return 0;
}