#include <stdio.h>
#define N 1000000
#define F(i,n) for(int i = 0;i < n;i++)

void z(int a[],int n,int min,int max){int s = a[(min+max)/2];int min2=min; int max2=max;int tmp;for(;;){for(;;){if(a[min2]>=s)break;min2++;}for(;;){if(a[max2]<=s)break;max2--;}if(min2>=max2)break;tmp=a[min2];a[min2]=a[max2];a[max2]=tmp;min2++;max2--;}if(min<min2-1) z(a,n,min,min2-1);if(max>max2+1) z(a,n,max2+1,max);}

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,n,0,n-1);
	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;
}