624 B | 624 chars
import sys
from math import sqrt, pi, sin, factorial
inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = " " : [*map(int,inp().split(x))]
mfi = lambda x = " " : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def v(r):
return 4 / 3 * pi * (r ** 3)
def solve():
b, w = input().split()
b = int(b)
w = float(w)
v_sum = [v(float(input())) for _ in range(b)]
if w <= sum(v_sum) / 1000:
print("Yes")
else:
print("No")
if __name__ == "__main__":
tc = ii()
for t in range(tc):
print(f"Data Set {t+1}:")
solve()
print()