f = 1
n = int(raw_input())
for i in range(1, n+1):
f *= i
print(f)
Arpit's Newsletter read by 15000+ engineers
🔥 Thrice a week, in your inbox, an essay about system design, distributed systems, microservices, programming languages internals, or a deep dive on some super-clever algorithm, or just a few tips on building highly scalable distributed systems.