// yukicoder: No.390 最長の数列
// 2019.5.6 bal4u

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

#if 1
#define gc() getchar_unlocked()
#define pc(c) putchar_unlocked(c)
#else
#define gc() getchar()
#define pc(c) putchar(c)
#endif
int in()    // 非負整数の入力
{
	int n = 0, c = gc();
	do n = 10 * n + (c & 0xf), c = gc(); while (c >= '0');
	return n;
}

int x[100005], N;
int dp[1000005];

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

int main()
{
	int i, j, k, max;

	N = in();
	for (i = 0; i < N; i++) x[i] = in();
	qsort(x, N, sizeof(int), cmp);
	max = x[N-1];
	
	for (i = 0; i < N; i++) {
		k = x[i];
		for (j = k << 1; j <= max; j+=k) {
			if (dp[k]+1 > dp[j]) dp[j] = dp[k]+1;
		}
	}
	max = 0; for (i = 0; i < N; i++) if (dp[x[i]] > max) max = dp[x[i]];
	printf("%d\n", max+1);
	return 0;
}