#include<iostream> using namespace std; int main(){ int c,a; int children[100],apple[100]; int b=0; int e=0; cin>>a; cin>>c; for(int i=1;i<=a;i++){ cin>>apple[i]; } for(int i=1;i<=c;i++){ cin>>children[i]; } for(int i=1;i<=a;){ for(int d=1;i<=a;i++){ if(children[d]>apple[i]) { b++; e++; } if(e==2) continue; } } cout<<b; }