CCC 2017 J3: Exactly Electrical

https://www.cemc.uwaterloo.ca/contests/computing/2017/stage%201/juniorEF.pdf

The solution:

input:

x1, y1 # start point coordinate

x2, y2 #end point coordinate

t #the initial number of units of the electrical charge of your battery

distance = abs(x1-x2) + abs(y1-y2)

if distance <= t and (t - dist) % 2 == 0:

print("Y")

else:

print("N")

x1, y1 = map(int, input().split())
x2, y2 = map(int, input().split())
t = int(input())
dist = abs(x1 - x2) + abs(y1 - y2)
if dist <= t and (t - dist) % 2 == 0:
    print('Y')
else:
    print('N')