from math import gcd

X = input()
L = len(X)
dot = -1

for i in range(L):
    if X[i]=='.':
        dot = i

flag = False

if dot>=0:
    for i in range(dot, L):
        if X[i]!='0':
            flag = True

if not flag:
    if dot>=0:
        print(X[:dot]+'/1')
    else:
        print(X+'/1')
else:
    X = int(''.join(X[i] for i in range(L) if i!=dot))
    D = 10**(L-dot-1)
    G = gcd(X, D)
    print(str(X//G)+'/'+str(D//G))