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


int getword(char *word)
{
    int i = 0; short c;

    while ((c = getchar()) != '\n' && c != ' ') {

        word[i] = c;
        ++i;
    }
    word[i] = '\0';
    if (word[0]) return 1;
    return 0;
}


int main(void)
{
    int k;
    ///int i = 1;
    scanf("%d",&k);
    scanf("\n");
    char word[k+1];
    word[0] = 0;
    char onestr[k+1];
    getword(word);
    do {

        strcpy(onestr,word);

        while (getword(word) && strlen(word) + strlen(onestr) + 1 <= k) {

            strcat(onestr," ");
            strcat(onestr, word);
            }

               printf("%s\n",onestr);
        } while (word[0]);

    return 0;
}