Not lint free

Process completed with exit code 1.

file=/home/runner/work/r/r/exercises/practice/knapsack/.meta/example.R,line=3,col=81,[a] Lines should not be more than 80 characters. This line is 91 characters.

file=/home/runner/work/r/r/exercises/practice/knapsack/test_knapsack.R,line=10,col=16,[f] Put spaces around all infix operators.

file=/home/runner/work/r/r/exercises/practice/knapsack/test_knapsack.R,line=10,col=27,[f] Put spaces around all infix operators.