import java.util.*;
import java.lang.*;

public class Main {
  public static void main(String[] args) {
  	Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int a[] = new int[n];
    for (int i = 0; i < n; i++) {
		a[i] = sc.nextInt();
    }

	int cnt = 0;
	boolean f = true;
	while (f) {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	}
    System.out.println(cnt);
  }
} import java.util.*; util.* java import java.lang.*; lang.* java public class Main {
  public static void main(String[] args) {
  	Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int a[] = new int[n];
    for (int i = 0; i < n; i++) {
		a[i] = sc.nextInt();
    }

	int cnt = 0;
	boolean f = true;
	while (f) {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	}
    System.out.println(cnt);
  }
} Main public static void main(String[] args) {
  	Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int a[] = new int[n];
    for (int i = 0; i < n; i++) {
		a[i] = sc.nextInt();
    }

	int cnt = 0;
	boolean f = true;
	while (f) {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	}
    System.out.println(cnt);
  } main {
  	Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int a[] = new int[n];
    for (int i = 0; i < n; i++) {
		a[i] = sc.nextInt();
    }

	int cnt = 0;
	boolean f = true;
	while (f) {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	}
    System.out.println(cnt);
  } 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 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 int cnt = 0; cnt 0 boolean f = true; f true while (f) {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	} f {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	} cnt++ cnt for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		} {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		} if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			} a[i] % 2 != 0 a[i] % 2 a[i] a i 2 0 {
				f = false;
				cnt--;
				break;
			} f = false f false cnt-- cnt break; a[i] /= 2 a[i] a i 2 System.out.println(cnt) System.out.println System.out System System.out cnt 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];
    for (int i = 0; i < n; i++) {
		a[i] = sc.nextInt();
    }

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

	int cnt = 0;
	boolean f = true;
	while (f) {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	}
    System.out.println(cnt);
  }
} Main
import java.util.*;
import java.lang.*;

public class Main {
  public static void main(String[] args) {
  	Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int a[] = new int[n];
    for (int i = 0; i < n; i++) {
		a[i] = sc.nextInt();
    }

	int cnt = 0;
	boolean f = true;
	while (f) {
		cnt++;
		for (int i = 0; i < n; i++) {
			if (a[i] % 2 != 0) {
				f = false;
				cnt--;
				break;
			}
			a[i] /= 2;
		}
	}
    System.out.println(cnt);
  }
}
