x = int(input())
pi = 3.14159265358979323846264338
#1.634983900184893
safety = [6, 200000, 90, 100000, 945, 100000, 9450, 50000, 93555]
L = [0 for _ in range(2, x+1)]
for i in range(2, x):
    if i <= 7:
        S = 0
        if i % 2:
            for j in range(safety[i-2], 0, -1):
                S += 1 / pow(j, i)
            L[i-2] = S - 1
        else:
            S = pow(pi, i) / safety[i-2]
            L[i-2] = S - 1
    else:
        S = 0
        for j in range(100, 0, -1):
            S += 1 / pow(j, i)
        L[i-2] = S - 1
        if S == 1:
            break
X = 1
for i in range(x-2, -1, -1):
    X -= L[i]
print(int(X*1000000))