#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

int compare_int(const void *a, const void *b);

int main()
{
        int L, N, W[10000];
        int cnt;

    scanf( "%d\n", &L );
    scanf( "%d\n", &N );
    for( int i = 0; i < N -1; i++ ) { 
        scanf( "%d ",W+i );
    }   
    scanf( "%d\n", W+N-1 );

        qsort( W, N, sizeof(int), compare_int );
        int sum = 0;
        int i = 0 ;
        while( i < N ) {
                if( sum + W[i] <= L ) {
                        sum += W[i++];
                }
                else {
                        break;
                }
        }

        printf("%d\n", i );
}

int compare_int(const void *a, const void *b) 
{
    return *(int*)a - *(int*)b;
}