Box Progression Part 1

Logic Level 3

+++ \large \square + \square\square+\square\square\square+\square\square\square\square

You are given that the numbers 0,1,2,,90,1,2,\ldots,9 are to be filled in the square boxes as shown above (without repetition) such that it represent a sum of a 1-digit, 2-digit, 3-digit, and 4-digit number.

Of all the possible arrangements, find the minimum value of the sum of these four numbers.

Details and Assumptions:

This is an arithmetic puzzle, where 1 1 \square would represent the 2-digit number 19 if =9 \square = 9 . It does not represent the algebraic expression 1× 1 \times \square .

See Part 2, Part 3 and Part 4.

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