#include <stdio.h>

main() {
    int L, N;
    int width[10000];
    scanf("%d", &L);
    scanf("%d", &N);
    
    for (int i=0; i<N; i++) {
        scanf("%d", &(width[i]));
    }
    
    // sort
    while (1) {
        int flag = 0;
        for (int i=0; i<N-1; i++) {
            if (width[i] > width[i+1]) {
                int tmp = width[i];
            
                width[i] = width[i+1];
                width[i+1] = width[i];
                flag = 1;
            }
        }
        if (flag == 0)
            break;
    }
    
    int total = 0;
    for (int i = 0; i<N; i++) {
        total += width[i];
        if (total > L) {
            printf("%d\n", i);
            break;
        }
    }
}