uses crt;

var n,i:longint;

kt:boolean;

begin

clrscr;

readln(n);

if (n<2) then writeln('Nhap lai')

else 

begin

kt:=true;

for i:=2 to trunc(sqrt(n)) do 

  if n mod i=0 then

begin

kt:=false;

break;

end;

if kt=true then writeln('la so nguyen to')

else writeln('khong la so nguyen to');

end;

readln;

end.

#include <bits/stdc++.h>
using namespace std;
long long a,b,bcnn;
int main()
{
    cin>>a>>b;
    if (a>b) swap(a,b);
    bcnn=b;
    while (bcnn%a!=0)
        bcnn=bcnn+b;
    cout<<bcnn;
    return 0;
}

Var n,sc,sl,i:longint;

Begin

Write('N = ');readln(n);

Write('Cac so tu 1 den ',n,' la ');

For i:=1 to n do

Write(i:8);

Writeln;

For i:=1 to n do

Begin

If i mod 2 = 0 then sc:=sc+i

Else sl:=sl+i;

End;

Writeln('Tong cac so chan la ',sc);

Write('Tong cac so le la ',sl);

Readln

End.

Câu 1.
int main() {
int cot, dong;
cin >> cot >> dong;
if ((cot + dong) % 2 == 0) cout << "NO";
else cout << "YES";
}

mình ko thấy

giúp mình đi

uses crt;

var n,i,t:int64;

begin

clrscr;

repeat

write('Nhap n='); readln(n);

until (0<n) and (n<1000000000);

t:=0;

for i:=1 to n-1 do

if n mod i=0 then t:=t+i;

if t=n then writeln(n,' la so hoan hao')

else writeln(n,' khong la so hoan hao');

readln;

end.

Bài 2: 

uses crt;

var s,a:integer;

begin

clrscr;

s:=0;

a:=0;

repeat

  a:=a+1;

s:=s+a;

until s>500;

writeln(s);

readln;

end.

1:

#include <bits/stdc++.h>

using namespace std;

long long a[100],i,n;

int main()

{

cin>>n;

for (i=1; i<=n; i++) cin>>a[i];

cout<<"Day ban dau la: "<<endl;

for (i=1;i<=n; i++) cout<<a[i]<<" ";

cout<<endl;

sort(a+1,a+n+1);

cout<<"Day tang dan la: "<<endl;

for (i=1; i<=n; i++) cout<<a[i]<<" ";

return 0;

}

1.

var n: integer;

begin

repeat

write('Nhap so n: '); readln(n);

until (n>=10) and (99>=n);

writeln('Chu so hang chuc la: ', n div 10);

writeln('Chu so hang don vi la: ', n mod 10);

end.

2.

var n,i: integer;

s: string;

begin

repeat

write('Nhap so n: '); readln(n);

until (n>=100) and (999>=n);

write('So moi la: ');

str(n,s);

for i:=length(s) downto 1 do write(s[i]);

end.