HZNUOJ


Problem_ID: A
Result: Accepted
Time: 268ms
Memory: 25312kB
Author: 13777726382
In contest: 1296

for tcase in range(int(input())):
   n,k,m = map(int,input().split())
   money = list(map(int,input().split()))
   money.sort()
   print(sum(money[:k])-n if sum(money[:k])>=n else 0)