#include <iostream>
using namespace std;

int main()
{
       const int daysInMonths[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
       int monthCount = 0;
       int firstDay = 0;
       cout << "Input: ";
       cin >> monthCount >> firstDay;

       if (monthCount > 12)
           monthCount = 12;
       if (firstDay < 1)
           firstDay = 1;
       else if (firstDay > 7)
           firstDay = 7;

       firstDay--; // Теперь от 0 до 6
       int friday13Count = 0;
       for (int month = 0; month < monthCount; month++) {
           // Если воскресенье начало месяца, то будет пятница 13
           if (firstDay == 6) {
               friday13Count++;
           }
           firstDay = (firstDay + daysInMonths[month]) % 7;
       }
       cout << "Friday 13: " << friday13Count << endl;

       return 0;
}