#include <iostream>
#include<cmath>
using namespace std;
 
typedef long long int ll;
 
int main() {
	// your code goes here
	int time,i;
	ll a[5][2];
	cin>>time;
	for(i=1;i<=4;i++)
	{
	cin>>a[i][0]>>a[i][1];
	}
	ll av,b,c,d,x,y,z,dist;
	av= -(a[1][1]+ a[2][1] + a[3][1]);
	b= a[1][1]*(a[2][0] + a[3][0]) + a[2][1]*( a[1][0] + a[3][0]) + a[3][1]*(a[1][0]+ a[2][0]);
	c= -(a[1][1]*a[2][0]*a[3][0] + a[2][1]*a[1][0]*a[3][0] + a[3][1]*a[1][0]*a[2][0]);
 
	x = av*pow(a[4][0],3);
	y=b*pow(a[4][0],2);
	z=c*a[4][0];
	d=a[4][1]-x-y-z;
 
	//cout<<av<<" "<<b<<" "<<c<<" "<<d<<endl;
 
	dist= (av/4)*(pow(time,4));
	dist+= (b/3)*(pow(time,3));
	dist+= (c/2)*(pow(time,2));
	dist+= d*time;
 
	cout<<dist<<endl;
 
	return 0;
}

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