IOI '05 P5 - Rectangle Game (Standard I/O)

#include <iostream>

using namespace std;

int main() {
    int x, y;
    while (cin >> x && cin >> y && x != -1) {
        int a = min(x, y), b = max(x, y);
        int loss = a; // a, a
        while (2*loss+1 <= b) loss = 2*loss+1;
        // move from a, b to a, loss
        cout << (a == x ? 'H' : 'V') << ' ' << loss << endl;
    }
    return 0;
}