Bash's Big Day

Bash's Big Day

#include<bits/stdc++.h>

using namespace std;
const int maxn=1e5+10;
int sum[maxn],maxx,x,n,vis[maxn],sum1,ans=1;
int main() {
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) {
        scanf("%d", &x);
        sum[x]++;
        maxx = max(maxx, x);
    }
    for (int i = 2; i <= maxx; i++) {
        sum1 = 0;
        if (!vis[i]) {
            for (int j = i; j <= maxx; j += i) {
                vis[j] = 1;
                sum1 += sum[j];
            }
        }
        ans = max(ans, sum1);
    }
    printf("%d\n", ans);
}