#include <iostream> using namespace std; int main() { int num = 0; for (int i = 10; i < 13; i++) { num = i * 809+1; if (num/100==i*8+1) { if (10+(num/10)%10<i && i*9>=100) { if (100+ ((num / 10) % 10)*10+ num % 10==9*i+1) { cout << i << endl; cout << num << endl; cout << num/100-1 << endl; cout << 9 * i + 1 << endl; cout << 9 * i << endl; } } } } }