f = 1
n = int(raw_input())
for i in range(1, n+1):
f *= i
print(f)
System Design for Beginners
A masterclass that helps early engineers and product managers become great at designing scalable systems.
132+ learners
Details →System Design Masterclass
A masterclass that helps you become great at designing scalable, fault-tolerant, and highly available systems.
1000+ learners
Details →Redis Internals
Learn internals of Redis by re-implementing some of the core features in Golang.
98+ learners
Details →