#include<stdio.h>

void run(void){
  char lock[4];
  char line[10];

  lock[3]='\0';

  for(lock[0]='0';lock[0]<='9';lock[0]++){
    for(lock[1]='0';lock[1]<='9';lock[1]++){
      for(lock[2]='0';lock[2]<='9';lock[2]++){
	printf("%s\n",lock);
	scanf("%s",line);
	if(line[8]=='\0'){
	  return;
	}
      }
    }
  }
}

int main(void){
  run();
  return 0;
}