Escala musical

#include <iostream>
#include <algorithm>
#include <vector>
#include <fstream>
#include <math.h>

using namespace std;

int main()
{

    int n, a;
    cin >> n;

    vector<int> v;
    for(int i = 0; i < n; i++)
    {
        cin >> a;
        v.push_back(a);
    }

    for(int i = 0; i < n; i++)
    {
        v[i] %= 12;
        if(v[i] == 0)
            v[i] = 12;
    }

    vector<int> notas(13, 0);
    for(int i = 0; i < n; i++)
    {
        if(notas[v[i]] == 0)
            notas[v[i]]++;
    }

         if(notas[2] == 0 & notas[4] == 0 & notas[7] == 0 & notas[9] == 0 & notas[11] == 0)
        cout << "do" << endl;
    else if(notas[3] == 0 & notas[5] == 0 & notas[8] == 0 & notas[10] == 0 & notas[12] == 0)
        cout << "do#" << endl;
    else if(notas[4] == 0 & notas[6] == 0 & notas[9] == 0 & notas[11] == 0 & notas[1] == 0)
        cout << "re" << endl;
    else if(notas[5] == 0 & notas[7] == 0 & notas[10] == 0 & notas[12] == 0 & notas[2] == 0)
        cout << "re#" << endl;
    else if(notas[6] == 0 & notas[8] == 0 & notas[11] == 0 & notas[1] == 0 & notas[3] == 0)
        cout << "mi" << endl;
    else if(notas[7] == 0 & notas[9] == 0 & notas[12] == 0 & notas[2] == 0 & notas[4] == 0)
        cout << "fa" << endl;
    else if(notas[8] == 0 & notas[10] == 0 & notas[1] == 0 & notas[3] == 0 & notas[5] == 0)
        cout << "fa#" << endl;
    else if(notas[9] == 0 & notas[11] == 0 & notas[2] == 0 & notas[4] == 0 & notas[6] == 0)
        cout << "sol" << endl;
    else if(notas[10] == 0 & notas[12] == 0 & notas[3] == 0 & notas[5] == 0 & notas[7] == 0)
        cout << "sol#" << endl;
    else if(notas[11] == 0 & notas[1] == 0 & notas[4] == 0 & notas[6] == 0 & notas[8] == 0)
        cout << "la" << endl;
    else if(notas[12] == 0 & notas[2] == 0 & notas[5] == 0 & notas[7] == 0 & notas[9] == 0)
        cout << "la#" << endl;
    else if(notas[1] == 0 & notas[3] == 0 & notas[6] == 0 & notas[8] == 0 & notas[10] == 0)
        cout << "si" << endl;
    else
        cout << "desafinado" << endl;

    return 0;
}