699 B | 699 chars
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
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 point(d):
if d > 40000:
return 0
l = [i * i for i in range(20, 220, 20)]
for i in range(len(l)):
if d <= l[i]:
return 10 - i
def solve():
n = ii()
l = [mii() for _ in range(n)]
ans = 0
for a, b in l:
d = a * a + b * b
ans += point(d)
p(ans)
if __name__ == "__main__":
tc = ii()
for t in range(1, tc+1):
ret = solve()