#include <bits/stdc++.h>

using namespace std;

double a,b,c,tb;

int main()

{

cin>>a>>b>>c;

tb=(a+b+c)/3;

cout<<fixed<<setprecision(1)<<tb<<endl;

if (tb>=8) cout<<"Gioi";

else if ((6.5<=tb) and (tb<8)) cout<<"Kha";

else if ((5<=tb) and (tb<=6.5)) cout<<"Trung Binh";

else cout<<"Chua dat";

return 0;

}

var t,dt,a,tb: real;

begin

write('Nhap diem mon Toan: '); readln(t);

write('nhap diem mon Tin: '); readln(dt);

write('Nhap diem mon Anh: '); readln(a);

if (a<=0) or (a>=10) or (t<=0) or (t>=10) or (dt<=0) or (dt>=10) then

repeat

writeln('Khong hop le, nhap lai: ');

write('Nhap diem mon Toan: '); readln(t);

write('nhap diem mon Tin: '); readln(dt);

write('Nhap diem mon Anh: '); readln(a);

until (a>=0) and (a<=10) and (t>=0) and (t<=10) and (dt>=0) and (dt<=10);

tb:=(t+dt+a)/3;

writeln('Diem trung binh: ',tb:2:1);

if (dt>=6.5) and (t>=6.5) and (a>=6.5) and (tb>=8) then writeln('Gioi') else

if (dt>=5) and (t>=5) and (a>=5) and (tb>=6.5) then writeln('Kha') else writeln('Trung binh');

end.

uses crt;

var toan,tin,anh,tb:real;

kt:integer;

begin

clrscr;

repeat

write('Nhap diem Toan:'); readln(toan);

write('Nhap diem Tin:'); readln(tin);

write('Nhap diem Anh:'); readln(anh);

until (0<=toan) and (toan<=10) and (0<=tin) and (tin<=10) and (0<=anh) and (anh<=10);

tb:=(toan+tin+anh)/3;

writeln('Diem trung binh cua 3 mon la: ',tb:4:2);

kt:=0;

if (tb>=8) and (toan>=6.5) and (tin>=6.5) and (anh>=6.5) then kt:=1;

if (6.5<=tb) and (tb<8) and (5<=toan) and (toan<6.5) and (5<=tin) and (tin<6.5) and (5<=anh) and (anh<6.5) then kt:=2;

if kt=0 then writeln('Hoc sinh trung binh');

if kt=1 then writeln('Hoc sinh gioi');

if kt=2 then writeln('Hoc sinh kha');

readln;

end.

uses crt;

var st:array[1..10]of string;

a:array[1..10]of integer;

i,n:integer;

begin

clrscr;

readln(n);

for i:=1 to n do 

 readln(st[i],a[i]);

for i:=1 to n do 

  writeln(st[i],' ',a[i]);

readln;

end.

uses crt;
var NS:array[1..100] of integer; Dtoan,Dvan,Dtb:array[1..100] of real;
hoten:array[1..100] of string; i:byte;
begin
clrscr;
for i:=1 to 45 do
begin
write('Nhap ten cua hoc sinh thu',i,':'); readln(hoten[i]);
write('Nhap ngay sinh:'); readln(NS[i]);
write('Nhap diem toan:'); readln(Dtoan[i]);
write ('Nhap diem van:'); readln(Dvan[i]);
Dtb[i]:=(Dtoan[i]+Dvan[i])/2;
end;
writeln('Diem trung binh cua cac ban trong lop la:');
for i:=1 to 45 do
writeln(hoten[i],':',Dtb[i]:1:2);
readln;
end.
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