# S4 method for ANY,missing
solve(a, b)# S4 method for madness,missing
solve(a, b)
# S4 method for madness,madness
solve(a, b)
# S4 method for madness,array
solve(a, b)
# S4 method for madness,ANY
solve(a, b)
# S4 method for array,madness
solve(a, b)
# S4 method for ANY,madness
solve(a, b)