# BOJ - 14717 - 앉았다

Updated:

```
import sys
def solution():
case = 153
A, B = map(int, sys.stdin.readline().split())
if A == B:
ret = (case - (10 - A)) / case
print("%0.3f"%ret)
else:
cnt = 0
for i in range(1, 11):
for j in range(i + 1, 11):
sums = i + j
if sums % 10 < (A + B) % 10:
if i == A or i == B or j == A or j == B: cnt += 2
else: cnt += 4
ret = cnt / (case * 1.0)
print("%0.3f"%ret)
solution()
```

https://www.acmicpc.net/problem/14717

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