UVALive

#pragma warning(disable:4996)
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std;

const double INF = 0x3f3f3f3f;
double a[1005];
double b[1005];
int vs_main()
{
    int n, m;
    while (cin >> n >> m)
    {
        int k1 = 1;
        memset(a, 0, sizeof(a));
        memset(b, 0, sizeof(b));
        double temp1 = 10000.0 / n;
        while ((k1-1)*temp1 <= 10000 - 0.5)
        {
            a[k1++] = (k1 - 1)*temp1;
        }
        double temp2 = 10000.0 / (n + m);
        int k2 = 1;
        while ((k2 - 1)*temp2 <= 10000 - 0.5)
        {
            b[k2++] = (k2 - 1)*temp2;
        }
        double sum = 0;
        for (int i = 1; i <= k1; i++)
        {
            double Min = INF;
            for (int j = 1; j <= k2; j++)
            {
                Min = min(Min, fabs(a[i] - b[j]));
            }
            sum += Min;
        }
        printf("%.4f\n", sum);
    }
    return 0;
}

#pragma warning(disable:4996)
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std;

const double INF = 0x3f3f3f3f;
double a[1005];
double b[1005];
int vs_main()
{
    int n, m;
    while (cin >> n >> m)
    {
        memset(a, 0, sizeof(a));
        memset(b, 0, sizeof(b));
        double ans = 0.0;
        for (int i = 1; i < n; i++)
        {
            double pos = (double)i / n*(n + m);
            ans += fabs(pos - floor(pos + 0.5)) / (n + m);
        }
        printf("%.4lf\n", ans * 10000);
    }
    return 0;
}