제출 #366886

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
366886	2021-02-15 16:13:01	haboh	Cooking (innopolis2018_final_B)	Cpython 3	100 / 100	22 ms	3052 KiB

B

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k, d, t = map(int,input().split())
q = k // d
if k % d != 0:
    q += 1
cyc = q * d
hot = k
cold = cyc - k
x = (2 * t) // (2 * hot + cold)
T = x * (hot + cold)
left = 1 - x * hot / t - x * cold / (2 * t)
if hot / t >= left:
    T += left * t
else:
    T += hot
    left -= hot / t
    T += left * 2 * t
print("%.9lf" % T)
    
 
 
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