频繁元素 C++

#include <iostream>

using namespace std;

int a[25];

int main(){
    int n, t, mf = 0, mv, cnt;
    cin >> n;
    for(int i = 0; i < n; ++i){
        cin >> a[i];
    }
    for(int i = 0; i < n; ++i){
        cnt = 0;
        for(int j = 0; j < n; ++j){
            if(a[j] == a[i]) ++cnt;
        }
        if(cnt > mf) mf = cnt, mv = a[i];
    }
    cout << mv;
    return 0;
}