Lập trình đơn giản

```cpp
#include <iostream>
using namespace std;

int main() {
int n = 36; // tổng số con
int m = 100; // tổng số chân

int g = (2*n - m/2)/3; int c = (4*n - 2*m)/6; if (g + c == n &amp;&amp; 2*g + 4*c == m &amp;&amp; m % 2 == 0) { cout &lt;&lt; &quot;So con ga: &quot; &lt;&lt; g &lt;&lt; endl; cout &lt;&lt; &quot;So con cho: &quot; &lt;&lt; c &lt;&lt; endl; } else { cout &lt;&lt; &quot;Khong co dap an&quot; &lt;&lt; endl; } return 0;

}
```

Kết quả khi chạy chương trình sẽ là:
```
So con ga: 22
So con cho: 14
```

#include <iostream>

int main() {
    int n, m;
    std::cout << "Nhap tong so con (n): ";
    std::cin >> n;
    std::cout << "Nhap tong so chan (m): ";
    std::cin >> m;

    int g, c;  // g: so luong ga, c: so luong cho

    // Giai he phuong trinh
    c = (4 * n - m) / 2;
    g = n - c;

    // Kiem tra ket qua
    if (c < 0 || g < 0 || (m % 2 != 0) || (4 * n - m) % 2 != 0) {
        std::cout << "Khong ton tai gia tri hop le cho so luong ga va cho!" << std::endl;
    } else {
        std::cout << "So luong ga: " << g << std::endl;
        std::cout << "So luong cho: " << c << std::endl;
    }

    return 0;
}

```cpp
#include <iostream>

using namespace std;

int main() {
int n;
cin >> n;

for (int a = 0; a &lt;= n; a++) { int b = n - a; if (b &gt;= 0 &amp;&amp; b &lt;= INT_MAX) { cout &lt;&lt; a &lt;&lt; &quot; &quot; &lt;&lt; b &lt;&lt; endl; } } return 0;

}
```   

#include <iostream>

int main() {
    int n;
    std::cout << "Nhap so tu nhien n (0 <= n <= 100): ";
    std::cin >> n;

    int a, b;

    // Chia n thành hai phần bằng nhau
    a = n / 2;
    b = n - a;

    std::cout << "Hai so nguyen a va b thoa man a + b = " << n << " la: " << a << " " << b << std::endl;

    return 0;
}

```c++
#include <iostream>
using namespace std;

int main() {
int n, sum = 0;
cout << "Nhap vao so nguyen duong N: ";
cin >> n;
for (int i = 1; i <= n; i++) {
sum += i;
}
cout << "Tong " << n << " so nguyen lien tiep la: " << sum;
return 0;
}
```

#include <iostream>

int main() {
    int N;
    std::cout << "Nhap so nguyen duong N: ";
    std::cin >> N;

    int sum = 0;

    for (int i = 1; i <= N; i++) {
        sum += i;
    }

    std::cout << "Tong cua " << N << " so nguyen lien tiep la: " << sum << std::endl;

    return 0;
}

program TinhChuViVaDienTichHinhTron;

const
  pi: real = 34.4;

var r, chuVi, dienTich: real;

begin
 write('Nhap ban kinh cua hinh tron: ');
  readln(r);
     chuvi := 2 * pi * r;
  dientich := pi * sqr(r);
  writeln('Chu vi cua hinh tron la: ', chuvi:0:1);
  writeln('Dien tich cua hinh tron la: ', dientich:0:1);
end.

Bạn kiểm tra lại đề á. Pi thì bằng 3.14 chứ nhỉ?

#include <iostream>

using namespace std;

int main() {
    int n;
    cout << "Nhap vao mot so nguyen khong am: ";
    cin >> n;

    int count = 0;
    for (int i = n + 1; i <= n * n; i++) {
        if (i > 0) {
            count++;
        }
    }

    cout << "So luong so duong lon hon " << n << " va nho hon hoac bang " << n * n << " la: " << count << endl;

    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    long long n;
    cin>>n;
    cout <<n*n-n<<endl;
    return 0;
}

#include <iostream>

using namespace std;

int main()   {

      int num;

      cout << "Nhap vao mot so nguyen co 2 chu so: ";

      cin >> num;

      int hang_chuc = num / 10;

      int hang_don_vi = num % 10;

      cout << "Chu so hang chuc: " << hang_chuc << endl;

      cout << "Chu so hang don vi: " << hang_don_vi << endl;

      return 0;

}

#include <bits/stdc++.h>

using namespace std;

int a;

int main()

{

cin>>a;

cout<<a%10<<" "<<a/10;

}

#include<iostream>

using namespace std;

int main()    {

          int n, tram, chuc, donvi;

          cout<<"Nhap vao mot so co 3 chu so: ";

          cin>>n;

          tram = n / 100;

          chuc = (n%100) / 10;

          donvi = (n%100) % 10;

          cout<<"Chu so hang tram cua so "<<n<<" la: "<<tram<<endl;

          cout<<"Chu so hang chuc cua so "<<n<<" la: "<<chuc<<endl;

          cout<<"Chu so hang don vi cua so "<<n<<" la: "<<donvi<<endl;

          return 0;

}

#include <bits/stdc++.h>
using namespace std;
#define ll long long
ll a;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>a;
    cout<<a/100<<"\n"<<(a/10)%10<<"\n"<<a%10;
}

out tu đúng

#include <iostream>
#include <vector>

int main() {
    std::vector<int> sequence = {10, 3, 6, 10, 6, 12, 10, 9, 18, 19, 21, 15, 19, 24, 21, 19, 27, 27, 28, 30};

    int N;
    std::cout << "Nhap so tu nhien N: ";
    std::cin >> N;

    int termN = sequence[N - 1];

    int sum = 0;
    for (int i = 0; i < N; i++) {
        sum += sequence[i];
    }

    std::cout << "So hang thu " << N << " cua day so la: " << termN << std::endl;
    std::cout << "Tong cua " << N << " so hang dau tien cua day so la: " << sum << std::endl;

    return 0;
}

var n,m:longint;

begin

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

m:=n*n;

writeln('n^2=',m);

readln

end.