var n1,c1,n2,c2,n3,c3,i,s,aux,r:longint;
    rez,t:int64;

function max(a,b:longint):longint;
begin
max:=a;
if b>a then
        max:=b;
end;

begin
assign(input,'plus.in');reset(input);
assign(output,'plus.out');rewrite(output);
readln(s);
readln(n1,c1,n2,c2,n3,c3);
if c1=0 then
        begin
        if c2<>0 then
                begin
                aux:=n1;n1:=n2;n2:=aux;
                aux:=c1;c1:=c2;c2:=aux;
                end;
        if (c3<>0) then
                begin
                aux:=n1;n1:=n3;n3:=aux;
                aux:=c1;c1:=c3;c3:=aux;
                end;
        end;
if c2>c3 then
        begin
        aux:=n3;n3:=n2;n2:=aux;
        aux:=c3;c3:=c2;c2:=aux;
        end;
for i:=0 to n1 do
        begin
        r:=s-i*c1;
        if c2=-1 then
                begin
                if (c3=-1)and(r<=0) then
                        begin
                        t:=abs(r)-max(abs(r)-n2,abs(r)-n3);
                        if (n2>=abs(r))and(n3>=abs(r)) then
                                t:=abs(r);
                        if t>=0 then
                                rez:=rez+t+1;
                        end;
                if (c3=0) then
                        if (r<=0)and(abs(r)<=n2) then
                                rez:=rez+n3+1;
                if (c3=1) then
                        begin
                        t:=n3-r;
                        if n2-abs(r)<t then
                                t:=n2;
                        if t>=0 then
                                rez:=rez+t+1;
                        end;
                end;
        if c2=0 then
                begin
                if c3=0 then
                        if r=0 then
                                rez:=rez+(n2+1)*(n3+1);
                if c3=1 then
                        if (r>=0)and(r<=n3) then
                                rez:=rez+n2+1;
                end;
        if c2=1 then
                if c3=1 then
                        if r>=0 then
                                begin
                                t:=(r-max(r-n2,r-n3));
                                if (n2>=abs(r))and(n3>=abs(r)) then
                                        t:=r;
                                if t>=0 then
                                        rez:=rez+t+1;
                                end;
        end;
writeln(rez);
close(input);close(output);
end.