774 B | 772 chars
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta
BLANK = " "
#inp = input
inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def gcd(a, b):
return gcd(b, a % b) if b > 0 else a
def lcm(a, b):
return a * b // gcd(a, b)
def solve():
N, L, H = mii()
l = mii() # N개
for i in range(L, H + 1):
for j in l:
if i % j == 0 or j % i == 0:
continue
break
else:
return i
return "NO"
if __name__ == "__main__":
tc = ii()
for t in range(1, tc+1):
ret = solve()
p(f"Case #{t}: {ret}")