#include<bits/stdc++.h>

using namespace std;

int main(){

int n,gioi,kha,tb,kem;

cin>>n;

float a[n];

for(int i=1;i<=n;i++){

cin>>a[i];

if(a[i]>=8.0){

gioi++;

}else if(a[i]>=6.5&&a[i]<8.0){

kha++;

}else if(a[i]<6.5&&a[i]>=5){

tb++;

}else{

kem++;

}

cout<<"so ban dat loai gioi la: "<<gioi;

cout<<"\nso ban dat loai kha la: "<<kha;

cout<<"\nso ban dat loai trung binh la: "<<tb;

cout<<"\nso ban dat loai kem la: "<<kem;

}

uses crt;
var a: array [1..100] of real;
i,n,dy,dtb,dk,dg:integer;
begin
clrscr;
write('Nhap so ban trong lop: '); readln(N);
for i:=1 to n do
begin
write('nhap diem ban ',i,': ');
readln(a[i]);
if a[i]<5 then dy:=dy+1 else if a[i]<6.4 then dtb:=dtb+1 else if a[i]<7.9 then dk:=dk+1 else dg:=dg+1;
end;
writeln('So ban hoc yeu: ',dy);
writeln('So ban hoc trung binh: ',dtb);
writeln('So ban hoc kha: ',dk);
writeln('so ban hoc gioi: ',dg);
readln
end.