[백준,c++] 11652번 - 카드

11652번: 카드

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int N; 
    cin >> N;
    vector<long long> number;
    int cnt = 1, max = 1;
    long long ans;

    for (int i = 0; i < N; i++) {
        long long num;
        cin >> num;
        number.push_back(num);
    }
    sort(number.begin(),number.end());
    ans = number[0];
    for (int i = 1; i < N; i++) {
        if (number[i] == number[i-1]) {
            cnt++;
            if (max < cnt) {
                max = cnt;
                ans = number[i];
            }
        }
        else cnt = 1;
    }
    cout << ans;

}