Codeforces - Beatiful Year

                                                                Click and See Problem

#include "stdafx.h"
#include <iostream>
using namespace std;

void findout () {
int a,b=0,digon,digtw,digth,digfo;
bool c=false;
do {
cout << "Please Enter Bigger than 1000 and Smaller than 9000" << endl;
cin >> a;
}while(a<1000 || a > 9000);

do {
a++;
   digon = a/1000;
digtw = (a - (digon* 1000)) / 100;
digth = (a % 100) / 10;
   digfo = a %10;

if(digon == digtw || digon == digth || digon ==digfo || digtw == digth ||digtw == digfo || digth == digfo ) {

c = false;

}else {
          c=true;
}


}while(c==false);
cout <<a << " efekanpulatli.blogspot.com" << endl;
}


int main() {
findout();
system("pause");
return 0;
}