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

void PrintLine(char *tab, int k1, int k2, int sc, int *ip, char par);

int main(int argc, char *argv[])
{
//Kolumna 1 i 2 do ktorych wyrownujemy
int k1,k2;
char *tab;
k1 = atoi(argv[1]);
k2 = atoi(argv[2]);

int cc = k2-k1+1;
int i = 0;
int sc;
char c;

tab = malloc(cc+4);

do{
         sc = 0;
         for(; i < cc; i++)
         {
                 c = getc(stdin);
                 if(c == ' ')
                         sc++;
                 if(c == -1)
                         break;
                 tab[i] = c;

         }
         PrintLine(tab,k1,k2,sc,&i,i % 2);
//         i = 0;
                 
         
}while(!feof(stdin));

free(tab);
return 0;
}

void PrintLine(char *tab, int k1, int k2, int sc, int *ip,char par)
{
//printf("TAB: %s||\n",tab);
int cc = k2-k1+1;

int i,j,k,sbw,sbw2,sbw3;
int spaces_written = 0;
char *lasts = strrchr(tab,' ');
int spaces_total = cc-((lasts-tab)-sc);
if(sc > 0)
{ sbw         = spaces_total/sc;
         sbw3 = sbw2 = spaces_total%sc;
}
else sbw = sbw2 = sbw3 = 0;

// printf("%d",*ip);
// printf("l-t: %d sc: %d sbw: %d sbw2: %d cc: %d spaces_total: %d\n",lasts-tab,sc,sbw,sbw2,cc,spaces_total);
for(i = 0; i < k1; i++)
         putc(' ',stdout);
for(i = 0, k = 0; k < *ip; i++)
{
         if(tab[i] != ' ')
         {
                 putc(tab[i],stdout);
                 k++;
         }
         else
         {
                 for(j = 0; j < sbw; j++,k++)
                         putc(' ',stdout);
                 if(par)
                 {
                         if(sbw2 > 0)
                         {
                                 putc(' ',stdout);
                                 sbw2--;
                                 k++;
                         }
                 }
                 else
                 {
                         if(sbw2 > 0 && spaces_written >= sc-sbw3)
                         {
                                 putc(' ',stdout);
                                 sbw2--;
                                 k++;
                         }

                 }
                 spaces_written++;
         }
}
putc('\n',stdout);

//skopiowanie pozostalosci
while(tab[i] == ' ')
         i++;
memcpy(tab,&tab[i],cc-i);
*ip = cc-i;
}