There are 50 children in a certain kindergarten. Now take out 420 comic books and distribute them to them. Try to prove that at least 4 children are assigned as many comic books (every child must be assigned a comic book).
某幼儿园有50个小朋友，现在拿出420本连环画分给他们，试证明：至少有4个小朋友分到连环画一样多(每个小朋友都要分到连环画)．
<result>4</result>