#include <iostream>
using namespace std;
int main() {
    int a = 10, b = 20;
    if (a > 5 || b < 15) {
        a += 10;
        if (b > 15 && a == 20) {
            b *= 2;
        } else {
            b -= 10;
        }
    } else {
        a -= 10;
    }
    cout << a + b << endl;
    return 0;
}