#include <stdio.h> int main() { int num; int table[10]={0}; scanf("%d",&num); while(num/10!=0) { int num2 = num%10; if(table[num2]==0) { table[num2]=1; printf("%d",num2); } num = num/10; } if(table[num]==0) printf("%d\n",num); return 0; }
