poj3475

简单题

#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
using namespace std;

#define eps 1.0e-8

int work(double a, double b, double c, double d)
{
    int ret = 0;
    while (c > a + eps)
    {
        ret++;
        c /= 2;
    }
    while (d > b + eps)
    {
        ret++;
        d /= 2;
    }
    return ret;
}

int main()
{
    //freopen("D:\\t.txt", "r", stdin);
    int a, b, c, d;
    while (scanf("%d%d%d%d", &a, &b, &c, &d) != EOF)
    {
        int ans1 = work(a, b, c, d);
        int ans2 = work(b, a, c, d);
        int ans = min(ans1, ans2);
        printf("%d\n", ans);
    }
    return 0;
}