import math
x = list(map(str,input()))
if('.' in x):
    a = []
    b = []
    flag = False
    for i in range(len(x)):
        if(x[i] == '.'):
            flag = True
        if(flag):
            if(x[i] != '.'):
                b.append(x[i])
        else:
            a.append(x[i])
    
    if((len(set(b)) == 1) & ('0' in set(b))):
        print(''.join(a) + '/1')
    else:
        bunsi = int(''.join(a) + ''.join(b))
        bunbo = 10 ** (len(a) + len(b) - 1)
        
        elem = math.gcd(bunsi,bunbo)
        bunsi //= elem
        bunbo //= elem
        print(str(bunsi) + '/' + str(bunbo))
else:
    print(''.join(x) + '/1')