uses crt;
var ten:array[1..50]of string;
n,i,j,x:integer;
begin
clrscr;
repeat
write('Nhap so hoc sinh:'); readln(n);
until (0<n) and (n<=50);
for i:=1 to n do
begin
write('Nhap ten cua hoc sinh thu ',i,'='); readln(ten[i]);
end;
readln;
end.