这道题没有存在的必要了

#include<bits/stdc++.h>
#define int long long
#define rep(i,l,r) for(int i=l;i<=r;i++)
using namespace std;

int n,a;
map<int,int> cnt;

signed main(){
    int n;
    cin>>n;
    rep(i,1,n){
        cin>>a;
        cnt[a]++;
    }
    int maxn=-1,maxk=0;
    for(auto&i:cnt)
        if(i.second>maxn)
            maxn=i.second,maxk=i.first;
    cout<<maxk;
}