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![](https://rs.olm.vn/images/avt/0.png?1311)
program TimBoi4ChuSo;
var
n, i: integer;
begin
repeat
writeln('Nhap vao so nguyen n (2<n<100): ');
readln(n);
until (n > 2) and (n < 100);
writeln('Cac boi cua ', n, ' co 4 chu so la: ');
for i := 1000 to 9999 do
begin
if i mod n = 0 then
writeln(i);
end;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
program MultiplesOfN;
var
n, i: integer;
begin
repeat
write('Nhap vao so nguyen duong n (0<n<100): ');
readln(n);
until (n > 0) and (n < 100);
writeln('Cac boi so cua ', n, ' co 4 chu so la:');
for i := 1000 to 9999 do
begin
if (i mod n = 0) then
begin
writeln(i);
end;
end;
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
program Tong_Binh_Phuong_So_Chan;
uses crt;
var n, i, sum: integer;
begin
clrscr;
write('Nhap vao so nguyen n (6 < n < 30): ');
readln(n);
sum := 0;
for i := 2 to n do
if i mod 2 = 0 then
sum := sum + i * i;
writeln('Tong binh phuong cac so chan tu 1 den ', n, ' la: ', sum);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
#include <bits/stdc++.h>
using namespace std;
string st;
int d,i,kt;
char x,ln;
int main()
{
getline(cin,st);
d=5;
x=st[2];
ln=st[0];
for (i=1; i<=d-1; i++)
if (ln<=st[i]) ln=st[i];
if (ln==x) cout<<"YES";
else cout<<"NO";
return 0;
}
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