WA for last testcase. Problem Code - S06E06

I can’t understand why my code is failing for the last testcase. Please help.

Link to my submission: Solution: 67957476 | CodeChef

One of the test cases that your code fails is :-

1
3 7

Expected - 9
Your answer - 10

Fix:-
Change

if(str.length() == 1) return (str[0] - '0') + k;

To

if(str.length() == 1) return min(9ll, (str[0] - '0') + k);

Thanks a lot :smile: