https://www.coursera.org/learn/competitive-programming-core-skills
Following the assignments and some commentary on the solutions.
Given a large non-negative integer x, find the number of decimal digits in x + 1. Input A non-negative integer x (0 ≤ x ≤ 101 000 000) with no leading zeroes. Output The number of decimal digits in x + 1.
Solution: 1-c-increment/increment.py