def solve(x):
N = x / 1000
num1 = (x / 100) % 10
num2 = (x / 10) % 10
num3 = x % 10
answer = (2*N + num1) + (N + num2) + (num3)
return answer
x = input("N & 3dig code: ")
answer = solve(x)
print answer
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