X = input().strip()

# Split into integer and decimal parts
if '.' in X:
    integer_part, decimal_part = X.split('.')
else:
    integer_part, decimal_part = X, ''

# Handle cases where integer part is empty (e.g., ".5" becomes "0.5")
if not integer_part:
    integer_part = '0'

# Process decimal part by stripping trailing zeros
processed_decimal = decimal_part.rstrip('0')

# Calculate the denominator based on the processed decimal length
n = len(processed_decimal)
denominator = 10 ** n

# Combine the integer and processed decimal parts to get the numerator
combined_str = integer_part + processed_decimal
numerator = int(combined_str) if combined_str else 0

# Handle case where numerator is 0 (output 0/1)
if numerator == 0:
    print("0/1")
else:
    # Compute GCD and reduce the fraction
    import math
    gcd_value = math.gcd(numerator, denominator)
    simplified_num = numerator // gcd_value
    simplified_den = denominator // gcd_value
    print(f"{simplified_num}/{simplified_den}")