# f = open("Biddut.txt", "w")
# a= f.write("I read in dept. of software engineering")
# print(a)
# f.close()

# f = open("Biddut1.txt", "a")
# a= f.write("I read in dept. of software engineering")
# print(a)
# f.close()

# Handle read and write both
f=open("Biddut.txt", "r+")
#print(f.read())
f.write(input())
print()
f.close()


