WA0pts求调dalao

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N = 1e5 + 10;
int n, m, w[N], c[N], cnt;
signed main(){
	cin >> n >> m;
	for(int i = 1; i <= n; i++)
		cin >> w[i];
	for(int i = 1; i <= m; i++)
		cin >> c[i];
	sort(w + 1, w + n + 1);
	sort(c + 1, c + n + 1);
	int i = 0;
	for(int j = 1; j <= m; j++){
		if(i == n + 1) break;
		if(w[i] > c[j]) cnt++, i++;
		else i++, j--;
	}
	cout << cnt;
	return 0;
}