//
//  countsort.c
//
//
//  Created by MacBook return 0; on 08.11.14.
//
//

#include <stdio.h>
#include <stdlib.h>
#include <string.h>


int wcount(char *s)
{
    int k, count = 0;
    int len=strlen(s);
    for (k = 0; k < len; k++) {
        if (s[k]!=' '){
            count++;
            do k++; while ((k < len) && (s[k]!=' ') && (s[k]!='\0') && (s[k]!='\t'));
        }
    }
    return count;
}

void countsort(char *src, char *dest)
{
    int w = wcount(src);
    char strings[w][20];
    int i = 0, j;
    char *tok = NULL;
    //tok = strtok(src, " ");
    tok = strtok(src, " ");
    strncpy (strings[0], tok, 20);
    //printf("%s\n",strings[0]);
    int p = 1;
    while (tok && p < w) {
        //printf("Token: %s\n", tok);
        tok = strtok(NULL, " ");
        //p++;
        strncpy(strings[p], tok, 20);
        //printf("%s\n",strings[p]);
        p++;
    }
    /*for (i = 0; i < p; i++) {
        printf("strings[");
        printf("%d", i);
        printf("]=");
        printf("%s \n", strings[i]);
    }*/

    //printf("1\n");
    //printf("%d \n", w);

    int count[w];
    for (i = 0; i < w; i++) {
        count[i] = 0;
    }
    int t1 = 0, t2 = 0;
    for (j = 0; j < w - 1; j++) {
        //printf("1");
        for (i = 1 + j; i < w; i++) {
            if (strlen(strings[i]) < strlen(strings[j])) {
                //t1 = strlen(strings[i]);
                //t2 = strlen(strings[j]);
                //printf("%d %d \n", t1, t2);
                count[j]++;
                //printf("count j++ = ");
                //printf("%d\n", j);
            } else {
                count[i]++;
                //printf("count i++ = ");
                //printf("%d\n", i);
            }
        }
    }

    /*for (i = 0; i < w; i++) {
        printf("count[");
        printf("%d", i);
        printf("]=");
        printf("%d \n", count[i]);
    }*/

    for (i = 0; i < w; i++) {
        for (j = 0; j < w; j++) {
            if (count[j] == i) {
                strcpy(dest, strings[j]);
                dest += strlen(strings[j]);
                *dest++ = ' ';
            }
        }
    }
}

int main()
{
    char *src = malloc(100*sizeof(char));
    char *dest = malloc(100*sizeof(char));
    gets(src);
    countsort(src, dest);
    printf("%s ", dest);
    free(dest);
    free(src);
    return 0;
}