#include <stdio.h>

int main() {
  int waswhite = 1;
  while(1) {
    int c = getchar();
    if(c == EOF) return 0;
    if(c < '0') {
      if(!waswhite) putchar('\n');
      waswhite = 1;
    }
    else {
      putchar(c);
      waswhite = 0;
    }
  }
}