Compute A \times B, truncate its fractional part, and print the result as an integer.
A,B=map(float, input(' ').split())
pw = len(str(A)) // 2
A /= 10**pw
B *= 10**pw
print(int(A*B))
A,B=input().split()
A = int(A)
B = int(float(B)*100+.5)
print(A*B//100)