DOTUOI C++

#include <bits/stdc++.h>
using namespace std;
int n,t,x,i;
int a[1000000];
void nhap()
{
    //scanf("%d",&n);
    cin>>n;
    for (int i=1;i<=n;i++) 
        //scanf("%d",&a[i]);
        cin>>a[i];
}
void xuli()
{
    int res=0;
    int dem=1;
    for (int i=2;i<=n;i++)
    {
        if (a[i]==a[i-1]) dem++;
        else dem=1;
        res=max(res,dem);
    }
    //printf("%d",res);
    cout<<res;
}
int main()
{
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    freopen("dotuoi.inp","r",stdin);
    freopen("dotuoi.out","w",stdout);
    nhap();
    xuli();
}