Dev - C++ - hola amigos ,necesito ayuda , programa que calcule la primera luna llena de primavera

#include <iostream>

using namespace std;

int main()

{

    int v[13];

    int anyo;

    cout << "\nAnyo: ";

    cin >> anyo;

    v[0] = anyo % 19;

    v[1] = anyo / 100;

    v[2] = anyo % 100;

    v[3] = v[1] / 4;

    v[4] = v[1] % 4;

    v[5] = (v[1] + 8) / 25;

    v[6] = (v[1] - v[5] + 1) / 3;

    v[7] = (19 * v[0] + v[1] - v[3] - v[6] + 15) % 30;

    v[8] = v[2] / 4;

    v[9] = v[2] % 4;

    v[10] = (32 + 2 * v[4] + 2 * v[8] - v[7] - v[9]) % 7;

    v[11] = (v[0] + 11 * v[7] + 22 * v[10]) / 451;

    v[12] = v[7] + v[10] - 7 * v[11] + 114;

    int mes = v[12] / 31;

    int dia = 1 + ( v[12] % 31);

    cout << "\nLa primera luna llena de primavera es el "

         << dia << " del " << mes << endl;

    return 0;

}