What are the variable names in this code:

# Evaluate accuracy

y$\_$true $=[1,0,1,1,0]$

y$\_$predicted $=[1,0,0,1,1]$

MSE $=$ mean$\_$squared$\_$error$($y$\_$true, y$\_$predicted$)$

RMSE $=$ mean$\_$squared$\_$error$($y$\_$true, y$\_$predicted, squared$=$False$)$