#include <iostream> #include <math.h> using namespace std; int main() { int input; cin >> input; int tmp[64]; int i = 0; bool flag = false; tmp[0] = input % 10; cout << tmp[0]; input = floor (input / 10); while(input > 10) { int res = input % 10; for(int j = 0 ; j<i+1; j++) { if(tmp[j] == res) { flag = true; } } if(false == flag) { i++; tmp[i] = input % 10; cout << tmp[i]; } else { flag = false; } input = floor (input / 10); } for(int j = 0 ; j<i+1; j++) { if(tmp[j] == input) { flag = true; } } if(flag == false) { cout << input; } return 0; }