#include <stdio.h>
#define N 1000001
#define F(i,n) for(int i = 0;i < n;i++)

void z(const int a[],int b[],int n){static int c[N] = {0};int ct = 0;for(int i = 0;i < n;i++){c[a[i]]++;}for(int i = 0;i < N;i++){if(c[i] != 0){for(int i2 = 0;i2 < c[i];i2++){b[ct] = i;ct++;}}}}

int main(void){
	int n,m,t=0;
	scanf("%d%d",&n,&m);
	int c[n];
	F(i,n)scanf("%d",&c[i]);
	z(c,c,n);
	while(m!=0){
		for(;;){
			if(c[t]<=0)t++;else break;
		}
		c[t]--;m--;
	}
	t=0;
	F(i,n){
		if(c[i]==0)t++;
	}
	printf("%d\n",t);
	return 0;
}