#include <stdio.h> int main() { for (int i = 10000;i < 99999;i++) { int j = 0; int sum = 0; int x = i; int t = 10; while (x / 10) { j++; x /= 10; } x = i; for (;j > 0;j--) { sum += (x / t) * (x % t); t *=10; } t = 10; if (i == sum) printf("%d ", i); } }