673 B | 673 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 solve():
c, b, n, r = mii()
if b == 0:
input()
chk_list = []
else:
chk_list = mii()
l = [mii() for _ in range(n)]
ans = 0
for company, money in l:
if company in chk_list:
ans += int(money * r / 100)
return ans
if __name__ == "__main__":
tc = ii()
for t in range(1, tc+1):
d = solve()
print(f"Data Set {t}:")
print(d)
print()