#include <stdio.h>
#define MAXBUFF 1000

/* removes trailing spaces and tabs */
int main()
{
    int i, c;
    char buff[MAXBUFF+1]; /* +1 fo \0 */

    i = 0;
    buff[MAXBUFF] = '\0';

    while ((c = getchar()) != EOF) {
        if (c == ' ' || c == '\t') {
            if (i < MAXBUFF) {
                buff[i] = c;
                ++i;
            } else {
                /* gracefully handle overflow */
                printf("%s", buff);
                i = 0;
            }
        } else if (c == '\n') {
            buff[0] = c;
            i = 1;
        } else {
            if (i > 0) {
                buff[i] = '\0';
                printf("%s", buff);
                i = 0;
            }
            putchar(c);
        }
    }
    return 0;
}