#include <stdio.h>

int main() {
    int a=0,b=0,c=0,d=0,i,e=0,n=0,m=0,o=0;
    int x[6],y[6];
    scanf("%d",&e);
    for(i=0;i<6;i++)
    {
        scanf("%d %d",&x[i],&y[i]);
        if(a<y[i])
        {
            a=y[i];
            b=i;
        }
    }
    c=b-1;
    if(c<0)
    {
        c=5;
    }
    d=b+1;
    if(d>5)
    {
        d=0;
    }
    if(y[d]<y[c])
    {
        n=d-1;
        if(n<0)
        {
            n+=6;
        }
        m=d-2;
        if(m<0)
        {
            m+=6;
        }
        o=(a*y[c]-y[n]*y[m])*e;
    }
    else if(y[c]<y[d])
    {
        n=c+1;
        if(n>6)
        {
            n=-6;
        }
        m=c+2;
        if(m>6)
        {
            m=-6;
        }
        o=(a*y[d]-y[n]*y[m])*e;
    }
    printf("%d",n);
}

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