import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int flag = 0;
		int count = 0;
		
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		
		while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		}
		
		System.out.println(count);
		
	}

} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int flag = 0;
		int count = 0;
		
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		
		while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		}
		
		System.out.println(count);
		
	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int flag = 0;
		int count = 0;
		
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		
		while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		}
		
		System.out.println(count);
		
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int flag = 0;
		int count = 0;
		
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		
		while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		}
		
		System.out.println(count);
		
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int[] a = new int[n]; a new int[n] n int flag = 0; flag 0 int count = 0; count 0 for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
			a[i] = sc.nextInt();
		} {
			a[i] = sc.nextInt();
		} a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		} flag == 0 flag 0 {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		} for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			} {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			} if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				} a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
					a[i] /= 2;
				} a[i] /= 2 a[i] a i 2 {
					flag = 1;
					break;
				} flag = 1 flag 1 break; if(flag != 1) {
				count += 1;
			} flag != 1 flag 1 {
				count += 1;
			} count += 1 count 1 System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int flag = 0;
		int count = 0;
		
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		
		while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		}
		
		System.out.println(count);
		
	}

} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int flag = 0;
		int count = 0;
		
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		
		while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		}
		
		System.out.println(count);
		
	}

} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		int flag = 0;
		int count = 0;
		
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		
		while(flag == 0) {
			for(int i = 0; i < n; i++) {
				if(a[i] % 2 == 0) {
					a[i] /= 2;
				} else {
					flag = 1;
					break;
				}
			}
			if(flag != 1) {
				count += 1;
			}
		}
		
		System.out.println(count);
		
	}

}