题解 | #搬圆桌#
搬圆桌
https://www.nowcoder.com/practice/81bb01ef2bb144808a8277e9164a0886
import math
while True:
try:
r, x, y, x1, y1 = map(int, input().split())
distance = math.sqrt((x - x1) ** 2 + (y - y1) ** 2)
cnt = math.ceil(distance / (2 * r)) # 直接计算需要的步数，使用向上取整
print(cnt)
except:
break
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