Furnica1

//Roxana Timplaru
#include <fstream>
#include <iostream>

using namespace std;

ifstream fin("furnica.in");
ofstream fout("furnica.out");



int cerinta;
int t_u=5,t_c=2,t_o=3,n,i;
long long s,x1,y1,x2,y2,t,l,maxi;

void timp()
{
    fin>>n>>x1>>y1;
    s=y1*t_u+x1*t_o;
    l=y1+x1;
    y2=y1;
    maxi=l;
    for(i=2;i<=n;i++)
    {
        fin>>x2>>y2;
        if (y2>=y1)
            {
                s=s+(y2-y1)*t_u;
                l=l+y2-y1;
            }
        else
            {
                s=s+(y1-y2)*t_c;
                if (l>maxi)
                    maxi=l;
                l=0;
            }
        s=s+x2*t_o;
        y1=y2;
        l=l+x2;
    }
    s=s+y2*t_c;
    if (l>maxi)
        maxi=l;
    if (cerinta==1)
        fout<<s;
        else
            fout<<maxi;
}

void foaie()
{ int ok=0;
        fin>>n>>t>>x1>>y1;
    s=y1*t_u+x1*t_o;
    if (s>=t) fout<<1;
    else
    {
    for(i=2;i<=n;i++)
    {
        fin>>x2>>y2;
        if (y2>y1)
            {
                s=s+(y2-y1)*t_u;
                if (s>=t)
                {   ok=1;
                    fout<<i;
                    break;}
            }
        else
            if (y1>y2)
            {
                s=s+(y1-y2)*t_c;
                if (s>=t)
                { ok=1;
                fout<<i-1;
                break;}

                }

        s=s+x2*t_o;
        y1=y2;
        if (s>=t)
        {
            fout<<i;
            ok=1;break;
        }
            }
    s=s+y2*t_c;
   if (ok==0)
    fout<<n;
    }
}

int main()
{

    fin>>cerinta;
    if (cerinta==1 || cerinta==2)
      timp();
    else
        foaie();
    return 0;
}