P51153: Parells d'una seqüència (2)

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


int main() {
    int n;
    while (cin >> n) {
        vector<int> v(n);
        for (int i = 0; i < n; ++i) {
            cin >> v[i];
        }
        bool senar = false;
        bool parell = false;
        int i = 0;
        while ((i < n) && (not senar or not parell)) {
            if (v[i]%2 == 0) parell = true;
            else if (v[i]%2 == 1) senar = true;
            ++i;
        }
        if (parell*senar == 1) cout << "si" << endl;
        else cout << "no" << endl;
    }
}