import sys
from math import sqrt, pi, sin, factorial
inp = lambda : sys.stdin.readline()[:-1]
mii = lambda x = " ": [*map(int,inp().split(x))]
mfi = lambda x = " ": [*map(float,inp().split(x))]
ii = lambda : int(inp())
k = 0
while 1:
k += 1
L = ii()
if L == 0:
break
N = ii()
l = [ii() for _ in range(N)]
print(f"User {k}")
for i in l:
s = L * i
print(f"{s // 100000}.{s%100000:05d}")