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prkagrawal/soldierAndBananas.py

Last active June 20, 2020 15:24
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#dailyCoding #python
Raw
soldierAndBananas.py
k,n,w = str(input()).split()
k = int(k)
n = int(n)
w = int(w)
mn = 0
for i in range(w):
mn = mn + (i+1)*k
if n<mn:
print(mn-n)
else:
print(0)
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