Hello!
I am getting wrong answer. Can someone explain me why or give input when it’s WA?
Language: Python
Thanks a lot 
test_cases = int(input())
out = []
for i in range(test_cases):
a, b = map(int, input().split())
if (a==b and a%2==0):
out.append(int(a*b/2))
elif (a==b and a%2==1):
temp = ((a//2)+1) * b
out.append(int(temp))
elif (a!=b and a%2==0 and b%2==0):
out.append(int((a*b/2)))
elif (a!=b and a%2==1 and b%2==1):
if (a>b):
temp = ((b//2)+1) * a
out.append(int(temp))
else:
temp = ((a//2)+1) * b
out.append(int(temp))
elif (a!=b and ((a%2==1 and b%2==0) or (a%2==0 and b%2==1))):
if (a%2==0):
x = a*b / 2
y = ((b//2)+1) * a
elif (a%2==1):
x = a*b / 2
y = ((a//2)+1) * b
if (x>y):
out.append(int(x))
else:
out.append(int(y))
for i in range(test_cases):
print(out[i])
