What is the time complexity of the following code snippet in C$++?$ void solve$()\{$ string s $=$ "scaler"; int n $=$ s$.$size$()$; for$($int i $=0$; i $<$ n; i$++)\{$ s $=$ s $+$ s$[$i$]$; $\}$ cout $<<$ s $<<$ endl; $\}$