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#include <iostream>

using namespace std;

int main() {
    int n;
    cin>>n;

    int ciag[n];
    for(int i=0;i<n;i++) {
        cin>>ciag[i];
    }
    const int MAX_N=500001;
    int f[MAX_N]={0};
    int mxf = 0;


    for (int i=0;i<n;i++) {
        int num = ciag[i];
        f[num]++;
        mxf=max(mxf,f[num]);
    }


    cout<<mxf<<endl;

    return 0;
}