Given the following code, what is the output?def main$()$ :i $=20$b $=$ mysteriousFunction$2($i$)$print $($b $+$ i$)$def mysteriousFunction$1($i$)$ :n $=0$while n $*$ n $<=$ i:n $+=1$return n $-1$def mysteriousFunction$2($a$)$ :b $=0$for n in range$($a$)$ :i $=$ mysteriousFunction$1($n$)$b$=$b$+1$return bmain$()$