Calculate the execution time of the following code :

$($ Note: you may use ${?}^{{?}^{{?}^{?}}}$ for power, e$.$g$.,x$ cube as $x^{{?}^{{?}^{?}}}3)$

$\backslash$table$[[$Statement$,$Cost,Repetition$],[i=1$;$,$c$1,],[$sum $=0$;$,$c$2,],[$while $,$c$3,],[j=1$;$,$c$4,],[$while $,$c$5,],[$sum $=$ sum $+$ i;$,$c$6,],[j=j+1$;$,$c$7,],[$