10. In a certain archery competition, the rules are as follows: hitting area 1 scores 4 points; hitting area 2 scores 3 points; hitting other areas scores 1 point. Xiao Hu has 50 arrows. When he still has 7 arrows left to shoot, his score exceeds 150 points. At this point, Xiao Hu has at least $\qquad$ arrows hitting area 1.
$22$