program bt;
uses crt;
var i,n : integer;
diemtoan, diemvan: array [1..100] of real;
begin
clrscr;
write('Nhap so ban trong lop: '); readln(n);
writeln('Nhap diem toan: ');
for i:=1 to n do begin write(i,'.'); readln(diemtoan[i]); end;
writeln('Nhap diem van: ');
for i:=1 to n do begin write(i,'.'); readln(diemvan[i]); end;
writeln('Diem trung binh: ');
for i:=1 to n do begin
writeln(i,'.', (diemtoan[i] + diemvan[i]) / 2 :3:1);
end;
readln
end.