TABUS algorithm

Hello,I have made the TABUS problem,tested it with different test cases,and they all succeeded,but I still get a wrong answer.Apparently,this line of code makes the difference && current_time<=time_counter
(line 40).I would appreciate if you would tell me what i am doing wrong
#include <stdio.h>
#include
using namespace std;

struct bus{
int start_station;
int stop_station;
int start_time;
int stop_time;
};
vector < vector< bus *> > * station_vector;
long time_counter=1000000001;
long M,U,V,T;
int N,k;
bool ok=false;

void my_function(long current_position,int current_time,long ex_bus_index,long ex_current_position)
{
if((current_position+1)!=N)
{
for(long i=0;i< (*station_vector)[current_position].size();i++)
{

        if(current_position==0)
        {
            current_time=(*station_vector)[current_position][i]->start_time;
            k=current_time;

        }
        else
        {
            k=(*station_vector)[current_position][i]->start_time-(*station_vector)[ex_current_position][ex_bus_index]->stop_time ;
            if(current_time<k)
            {
                current_time=k;
            }
        }

        if((*station_vector)[current_position][i]->stop_time <=T
           && current_time<=time_counter
           )
        {
            my_function((*station_vector)[current_position][i]->stop_station-1,current_time,i,current_position);

        }

    }
}
else if( (*station_vector)[ex_current_position][ex_bus_index]->stop_time<=T &&current_time<time_counter)
{
    time_counter=current_time;
    ok=true;
}

}

int main()
{
//FILE *in=fopen(“test.txt”, “r”);
scanf("%d%ld%ld",&N,&T,&M);

station_vector=new vector < vector<bus *> >(N);

for(long i=0;i<M;i++)
{
bus * bustruct=new bus;
scanf("%ld%ld%d%d",&(bustruct->start_station),&(bustruct->stop_station),&(bustruct->start_time),&(bustruct->stop_time));
    if(bustruct->stop_time<=T)
    {
        (*station_vector)[bustruct->start_station-1].push_back(bustruct);

    }


}

my_function(0,0,0,0);
delete station_vector;
station_vector=0;
if(ok==true)
{
printf("%ld\n",time_counter);

}
else
{
    printf("%d\n",-1);
}

return 0;

}

Hello alchemyofdeath !

I will appreciate you if you solve my problem to the same question … here is the link , i too have posted on forum with algorithm :

//