#include <stdio.h>
#define MAX_N 100000

int N;
int d[MAX_N] = {0};
int x[MAX_N];

void init(){
    scanf("%d", &N);
    for (int i=0; i<N; i++) scanf("%d", x + i);
    for (int i=0; i<N; i++) d[x[i]] = 1;
}

int main() {
    int max = 0;

    init();

    for (int i=0; i<MAX_N; i++) {
        if (d[i] == 0) continue;
        for (int j=i+i; j<MAX_N; j+=i) {
            if (d[j] > 0) {
                d[j] = d[j] > d[i] + 1 ? d[j] : d[i] + 1;
            }
        }
    }

    for (int i=0; i<MAX_N; i++)
        max = max > d[i] ? max : d[i];

    printf("%d", max);
}