#include <iostream>
#include <cstdio>

using namespace std;

void TrimRight(char * s)
{
    size_t space_counter = 0;

    for(;;)
	{
	    if (!*s) break;

	    if (*s == ' ')
			space_counter++;
	    else
			space_counter = 0;

	    ++s;
	}

    *(s - space_counter) = '\0';
}

int main(int argc, char *argv[])
{
    char s[8193];
    scanf("%8192[ 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz]", s);
    printf("%s:\n%s\n", "Original string", s);
    TrimRight(s);
    printf("%s:\n%s\n", "Trimmed string", s);
    return 0;
}