/** A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 * 99. Find the largest palindrome made from the product of two 3-digit numbers.. */ /** 1001 = 7 * 11 * 13 */ #define _max 997 #include "0.hpp" int main() { int pal = 0; for(int i = _max; i >= 100; i--) { int temp = i; pal = 0; while(temp > 0) { pal = pal * 10 + temp % 10; temp /= 10; } pal += i * 1000; int m = 100; do { while(pal % m != 0) m++; if(m < 1000 && pal / m < 1000) { cout << pal << " = " << m << " * " << pal / m << endl; return 0; } m++; } while(m < 1000); } return 0; }