[Test1]
input=2,2,1
output=1
[Test2]
input=1,1,2,5,6,2,6
output=5
[Test3]
input=13,2147483647,19,0,13,0,19
output=2147483647
[Test4]
input=2147483647,-2147483648,4,1,2147483647,1,4
output=-2147483648
[Test5]
input=11,21,0,9,4,4,9,21,11
output=0
[Test6]
input=-1,-2,-3,-4,-4,-3,-2,-1,0
output=0