"""import math

x = int(input())
print(round(math.exp(x) / (math.exp(x) + 1), 2))
"""
path1 = 'https://e-smartdata.teachable.com/p/sciezka-data-scientist-machine-learning-engineer'
path2 = 'https://e-smartdata.teachable.com/p/sciezka-data-scientist-deep-learning-engineer'
path3 = 'https://e-smartdata.teachable.com/p/sciezka-bi-analyst-data-analyst'
print(f"path1: {path1.index('scientist')}")
print(f"path2: {path2.index('scientist')}")
print(f"path3: {path3.index('scientist')}")
