17 lines
299 B
Python
17 lines
299 B
Python
|
import io
|
||
|
|
import sys
|
||
|
|
|
||
|
|
sys.stdin = io.StringIO('''2 60 3 96''') # 12 / 6
|
||
|
|
|
||
|
|
a = list(map(int, input().split()))
|
||
|
|
_min, _max = min(a), max(a)
|
||
|
|
k = 0
|
||
|
|
for i in range(_min, _max):
|
||
|
|
if i % a[0] + i % a[2] + a[1] % i + a[3] % i == 0:
|
||
|
|
k += 1
|
||
|
|
print(i)
|
||
|
|
break
|
||
|
|
|
||
|
|
if k == 0:
|
||
|
|
print(-1)
|