#include<stdio.h>
#include<string.h>
int main(void){
	int i=0,j=0,k=0,x;
	char a[10];
	while(strcmp(a,"unlocked") != 0){
		if(i<10){
			printf("00%d\n",i);
		}else if(i<100){
			printf("0%d\n",i);
		}else{
			printf("%d\n",i);
		}
		scanf("%s",a);
		i++;
	}
	return 0;
}