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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int TEN = 10;
  5. const int THOUSAND = 1000;
  6. const int TENTHOUSAND = 10000;
  7.  
  8. int main() {
  9.     int n;
  10.     cin >> n;
  11.     int cpyN = n, number = 0;
  12.     while (n != 0) {
  13.         ++n;
  14.         if (cpyN < TEN * TEN) {
  15.             if (n % TEN == n / TEN % TEN) {
  16.                 number = n;
  17.                 n = 0;
  18.             }
  19.         }
  20.         if (cpyN >= TEN * TEN && cpyN < THOUSAND) {
  21.             if (n % TEN == n / TEN % TEN && n / TEN % TEN == n / (TEN * TEN) % TEN) {
  22.                 number = n;
  23.                 n = 0;
  24.             }
  25.         }
  26.         if (cpyN >= THOUSAND && cpyN < TENTHOUSAND) {
  27.             if (n % TEN == n / TEN % TEN && n / TEN % TEN == n / (TEN * TEN) % TEN && n / (TEN * TEN) % TEN == n / THOUSAND % TEN) {
  28.                 number = n;
  29.                 n = 0;
  30.             }
  31.         }
  32.     }
  33.     cout << number;
  34.     return 0;
  35. }
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/x2xJTn
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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