# your code goes here
n = [2,4,7,1,6,3,8,5,10,9,12]
i = 0
j = len(n)-1
p1 = 0
p2 = 0
while(j>=i):
if(n[i]%2 != 0):
p1 += n[i]
i += 1
else:
p2 += n[i]
i += 1
while(n[j]%2 !=0):
p1 += n[j]
j -= 1
p2 += n[j]
j -= 1
ans = abs(p2-p1)
print(ans)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCm4gPSBbMiw0LDcsMSw2LDMsOCw1LDEwLDksMTJdCmkgPSAwCmogPSBsZW4obiktMQpwMSA9IDAKcDIgPSAwCndoaWxlKGo+PWkpOgoJaWYobltpXSUyICE9IDApOgoJCXAxICs9IG5baV0KCQlpICs9IDEKCQoJZWxzZToKCQlwMiArPSBuW2ldCgkJaSArPSAxCgkJd2hpbGUobltqXSUyICE9MCk6CgkJCXAxICs9IG5bal0KCQkJaiAtPSAxCgkJcDIgKz0gbltqXQoJCWogLT0gMQoKYW5zID0gYWJzKHAyLXAxKQpwcmludChhbnMp