#include <iostream> using namespace std; int main() { int count = 0; int a = 0, b = 0; for (int i = 1; i <= 1000; i++) { a++; b++; if (a > 20) { a = 1; } if (b > 30) { b = 1; } if (a == b) { count++; } } cout << count << endl; return 0; }