Folding Gym - 101142F

问如何切蛋糕可以保证分开两个点，就是让切开后的每块蛋糕都有一个点
就是沿着这两个点所在的矩形的对角线切就可以

#include 
#include 

using namespace std;
int main() {
    freopen("folding.in", "r",stdin);
    freopen("folding.out", "w", stdout);
//    freopen("IN.txt", "r", stdin);
    long long n, m, a, b;
//    ios::sync_with_stdio(0);
    while (cin >> a >> b >> m >> n) {

        if (a > b) swap(a, b);  // a < b
        if (m > n) swap(m, n);  // m < n
        if (n > b || m > a) {
            cout << -1 << endl;
        }
        else {
            long long ans1 = 0, ans2 = 0;
            long long t1, t2;
            t1 = m, t2 = n;
            while (t1 < a) {
                t1 *= 2;
                ans1++;
            }
            while (t2 < b) {
                t2 *= 2;
                ans1++;
            }
            t1 = n, t2 = m;
            while (t1 < a) {
                t1 *= 2;
                ans2++;
            }
            while (t2 < b) {
                t2 *= 2;
                ans2++;
            }
            if (m <= b && n <= a) {
                cout << min(ans1, ans2) << endl;
            }
            else {
                cout << ans1 << endl;
            }
        }
    }
    return 0;
}