#include <stdio.h>

int main(void)
{
	int i, j, L, N, W[10000];
	int min, imin, length = 0, num = 0;
    scanf("%d", &L);
    scanf("%d", &N);
    for(i = 0;i < N;i++){
    	scanf("%d", &W[i]);
    }
    for(j = 0;j < N;j++){
	    min = 10000;
	    for(i = 0;i < N;i++){
	    	if(W[i] < min && W[i] != 0){
	    		min = W[i];
	    		imin = i;
	    	}
	    }
	    if(length + W[imin] > L)break;
	    length += W[imin];
	   	num++;
   		W[imin] = 0;
    }
    printf("%d\n", num);
    return 0;
}