Problem $5(15$ pts$)$

Assume that there are $16$ threads participating in the following parallel execution.

$```$

#include "omp.h$"$

int a $=-1,$ b$=-2$;

#pragma omp thread private $($a$)$

void f$($int i$)$

$\{$

int k $=0$;

for $($; i$>0$; i$--)$

k$++$;

#pragma omp critical

b $=$ b $+$ k;

$\}$

int main $()$

$\{$

#pragma omp parallel

$\{$

a $=$ omp$\_$get$\_$thread$\_$num $()$ ;

f$($a$)$;

$\}$

printf $("$a $=9$d b $=\%$d

$",$ a$,$ b$)$;

$\}$

$```$

What is the output value of $\backslash ($ a $\backslash )$ and $\backslash ($ b $\backslash )?$