#include <stdio.h>
main() { 
	int s, el = 0;
	for (int i = 6; i <= 30; i++) {
		s = 0;
		for (int j = 1; j <= i / 2; j++)
			if (i % j == 0)
				s = s + j;
			if (s == i)
				el++;
	}
	printf("%d", el);
}

public class Test {
	public static void main(String[] args) { 
		int r = 0; 
		for (int i = 1; i < 999; i++) {
			if (i % 3 == 0 && i % 2 == 0)
				r = i;
			} 
			System.out.print(r);
		}
	}

public class Test { 
	public static void main(String[] args) { 
		int i = 3, k = 1; 
		switch(i) { 
			case 1: 
				k++; 
			case 2: 
				k -= 3;
			case 3:
				k = 0;
			case 4:
				k += 3;
			case 5: 
				k -= 10; 
			default:
				k--; 
			}
		System.out.print(k);
	}
}

#include <stdio.h>
	int main() {
		int number = 1234; 
		int div = 10, result = 0; 
		while (number "( 1 )" 0) { 
			result = result * div; 
			result = result + number "( 2 )" div; 
			number = number "( 3 )" div;
		} 
		printf("%d", result);
	}

첫 사이클
0
4
123

두 번쨰
40
43
12

세 번째
430
432
1

네 번째
4320
4321
0

public class Test { 
	public static void main(String[] args) { 
		int w = 3, x = 4, y = 3, z = 5; 
		if((w == 2 | w == y) & !(y > z) & (1 == x ^ y != z)) { 
			w = x + y; 
			if(7 == x ^ y != w)
				System.out.println(w);
			else 
				System.out.println(x); 
		} 
		else {
			w = y + z; 
			if(7 == y ^ z != w)
				System.out.println(w); 
			else 
				System.out.println(z); 
			}
		}
	}

a = 100 
result = 0 
for i in range(1,3):
	result = a >> i
	result = result + 1 
print(result)

public class Test { 
	public static void main(String[]args) { 
		int a[] = new int[8]; 
		int i = 0; 
		int n = 10; 
		while( "( 1 )" ) { 
			a[i++] = "( 2 )";
			n /= 2; 
		} 
		for(i = 7; i >= 0; i--)
			System.out.print(a[i]); 
	} 
}

10 / 2 = 5(0)
5 / 2 = 2(1)
2 / 2 = 1(0)
 (1)
10 -> 1010 (8+2)

19 / 2 = 9(1)
9 / 2 = 4(1)
4 / 2 = 2(0)
2 / 2 = 1(0)
(1)
19 -> 10011 (16+2+1)

public class Main {
    static void func(String[] m, int n) {
        for (int i = 1; i < n; i++) {
            if (m[i-1].equals(m[i])) {  
                System.out.print("O");
            } else {
                System.out.print("N");
            }
        }

        for (String mo : m) {
            System.out.print(mo);
        }
    }

    public static void main(String[] args) {
        String[] m = new String[3];
        m[0] = "A";
        m[1] = "A";
        m[2] = new String("A");  
        func(m, 3);
    }
}

def test(lst):
	for i in range(len(lst) // 2):
		lst[i], lst[-i-1] = lst[-i-1], lst[i]
ls = [1,2,3,4,5,6]
test(ls)
print(sum(ls[::2]) - sum(ls[1::2]))