P63414: Comptant freqüències

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;


int main() {
    int n;
    cin >> n;
    if (n > 0) {
        vector<int> v(n);
        for (int i = 0; i < n; ++i) {
            cin >> v[i];
        }
        sort(v.begin(),v.end());
        int comp = v[0];
        int count = 0;
        for (int i = 0; i < n; ++i) {
            if (v[i] == comp) ++count;
            else {
                cout << comp << " : " << count << endl;
                count = 1;
                comp = v[i];
            }
        }
        cout << comp << " : " << count << endl;
    }
}