پاسخ سوال تولد تاریخی کوئرا

#include <iostream>
#include <string>
using namespace std;
 
 
int main()
{
    int n;
    cin >> n;
    string temp;
    int bdays[n];
    int monthBeforeDays[12];
    monthBeforeDays[0] = 0;
    monthBeforeDays[1] = 31 + monthBeforeDays[0];
    monthBeforeDays[2] = 28 + monthBeforeDays[1];
    monthBeforeDays[3] = 31 + monthBeforeDays[2];
    monthBeforeDays[4] = 30 + monthBeforeDays[3];
    monthBeforeDays[5] = 31 + monthBeforeDays[4];
    monthBeforeDays[6] = 30 + monthBeforeDays[5];
    monthBeforeDays[7] = 31 + monthBeforeDays[6];
    monthBeforeDays[8] = 31 + monthBeforeDays[7];
    monthBeforeDays[9] = 30 + monthBeforeDays[8];
    monthBeforeDays[10] = 31 + monthBeforeDays[9];
    monthBeforeDays[11] = 30 + monthBeforeDays[10];
    for(int i=0; i<n; i++)
    {
        cin >> temp >> temp;
        int month = stoi(temp.substr(0,2));
        bdays[i] = monthBeforeDays[month-1] + stoi(temp.substr(3,2));
        //cout << bdays[i] << endl;
    }
    
    int maxHappiness = -1;
    int bestDay = -1;
    for(int i=301; i<=365; i++)
    {
        int mhappiness = 1000000000;
        for(int j=0; j<n; j++)
        {
            if(bdays[j] <= i)
            {
                if(i - bdays[j] < mhappiness)
                    mhappiness = i - bdays[j];
            }
            else
            {
                if(365 - (bdays[j] - i) < mhappiness)
                    mhappiness = 365 - (bdays[j] - i);
            }
        }
        
        if(mhappiness > maxHappiness)
        {
            bestDay = i;
            maxHappiness = mhappiness;
        }
    }
    
    for(int i=1; i<=300; i++)
    {
        int mhappiness = 1000000000;
        for(int j=0; j<n; j++)
        {
            if(bdays[j] <= i)
            {
                if(i - bdays[j] < mhappiness)
                    mhappiness = i - bdays[j];
            }
            else
            {
                if(365 - (bdays[j] - i) < mhappiness)
                    mhappiness = 365 - (bdays[j] - i);
            }
        }
        
        if(mhappiness > maxHappiness)
        {
            bestDay = i;
            maxHappiness = mhappiness;
        }
    }
    
    int m = -1;
    for(int i=0; i<12; i++)
    {
        if(monthBeforeDays[i] >= bestDay)
        {
            m = i;
            break;
        }
    }
    if(m == -1)
        m = 12;
    string omonth = to_string(m);
    if(m < 10)
        omonth = "0" + omonth;
    
    int ioday = bestDay - monthBeforeDays[m-1];
    
    string oday = to_string(ioday);
    //cout << ioday;
    if(ioday < 10)
        oday = "0" + oday;
    
    //cout << " check ";
    cout << omonth << "-" << oday;
}