while True:

try:

a, b = [int(i) for i in input().split()]

times = 0

sumN = 0

while sumN < b:

sumN += a

times += 1

a += 1

print(times)

except:

break

sumN = 0

while sumN < b:

 

b可能小於0，這種情況while迴圈就會完全沒有執行到