var a,b,c,d,y:real;
begin
a:=0.75;
b:=7.7;
c:=2.83;
d:=45;
y:=Cos(b/a)+2*a*d+(c-1)*(c-1)*(c-1);
write('y = ',y);
readln;
end.
var a,b,c,d,y:real;
begin
a:=0.75;
b:=7.7;
c:=2.83;
d:=45;
y:=Cos(b/a)+2*a*d+(c-1)*(c-1)*(c-1);
write('y = ',y);
readln;
end.