Quants de diferents? - P25401

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

int cont(vector<int> v){
    int p=0;
    for(int i=0;i<v.size();++i){
        ++p;
        while(v[i]==v[i+1] && i<v.size()-1) ++i;
    }
    return p;
}

int main(){
    int n;
    while(cin>>n){
        vector<int> v(n,0);
        for(int i=0;i<n;++i) cin>>v[i];
        sort(v.begin(),v.end());
        cout<<cont(v)<<endl;
    }
}