a = [31,56,123,56,11,35,81,55,33,95]
summ = 0
for i in range(len(a)):
if a[i] % 2 == 0:
summ += i
print(summ)
a = [31,56,123,56,11,35,81,55,33,95]
summ = 0
for i in range(len(a)):
if a[i] % 2 == 0:
summ += i
print(summ)