kanto = [73, 67, 43]
johto = [91, 88, 64]
hoenn = [87, 134, 58]
sinnoh = [102, 43, 37]
unova = [69, 96, 70]

w1, w2, w3 = 0.3, 0.2, 0.5

weights = [w1, w2, w3]

for x,y in zip(kanto,weights):
    z=x*y
    print (z)

def crop_yield(region,weight):
    result= 0
    for x,y in zip(region,weight):
        result += x*y
    return result