#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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