Submission #7062937

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a, b, c, x = [int(input()) for _ in range(4)]
count=0
a2 = x // 500 #500円玉は何枚必要か
if a < a2: #足りない時
    a3 = a
else: #足りてる時
    a3 = a2
for i in range(a3+1):
    y = x -500*i
    b2 = y//100
    if b < b2:
        b3 = b
    else:
        b3 = b2
        for j in range(b3+1):
            z = y -100*j
            if z % 50 == 0 and z /50 <= c:
                count += 1
            else:
                pass
print(count)

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