Var s,t:integer; begin write ('s='); readln(s); if (s>-10) and (s<10) then writeln ('Число однозначное') else begin t:=s mod 10; writeln (abs(t)); end; end.
Var b,beta,l,br,lr,v:real; begin readln(b,l,beta); br:=(beta*pi/180)/2; lr:=(l*pi/180); v:=(pi*b*b*b*(cos(br)/sin(br))*(sin(lr)/cos(lr)))/(8*sqr(sin(br))); writeln(v:7:2); end.