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@amulyakashyap09
Created December 31, 2017 16:23
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Set remove, discard, pop problem | hackerrank
n = int(input())
s = set(map(int, input().split()))
o = int(input())
for i in range(o):
op = input().split()
if(op[0] == "pop"):
if len(s)>0:
s.pop()
elif(op[0] == "remove"):
if int(op[1]) in s:
s.remove(int(op[1]))
elif(op[0] == "discard"):
s.discard(int(op[1]))
else:
assert False
print(sum(s))
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