def main():
    X = open(0).read().rstrip().split('.')
    x = int(X[0])
    if len(X) == 1:
        y = 1
    else:
        y = 10 ** len(X[1])
        x = x * y + int(X[1])
        g = gcd(x, y)
        x //= g
        y //= g
    print(x, y, sep = '/')

def gcd(i, j):
    while (r := i % j) != 0:
        i, j = j, r
    return j

if __name__ == '__main__':
    main()