import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

class Main {
    public static void main(final String[] args) throws Exception {

        try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
            int N = Integer.parseInt(br.readLine());

            int ans = 1;
            while (ans < N) {
                ans *= 2;
            }

            if (ans > N) {
                ans /= 2;
            }

            System.out.println(ans);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.ArrayList; ArrayList java.util import java.util.Arrays; Arrays java.util import java.util.HashSet; HashSet java.util import java.util.List; List java.util import java.util.Set; Set java.util class Main {
    public static void main(final String[] args) throws Exception {

        try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
            int N = Integer.parseInt(br.readLine());

            int ans = 1;
            while (ans < N) {
                ans *= 2;
            }

            if (ans > N) {
                ans /= 2;
            }

            System.out.println(ans);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    }
} Main public static void main(final String[] args) throws Exception {

        try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
            int N = Integer.parseInt(br.readLine());

            int ans = 1;
            while (ans < N) {
                ans *= 2;
            }

            if (ans > N) {
                ans /= 2;
            }

            System.out.println(ans);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    } main {

        try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
            int N = Integer.parseInt(br.readLine());

            int ans = 1;
            while (ans < N) {
                ans *= 2;
            }

            if (ans > N) {
                ans /= 2;
            }

            System.out.println(ans);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    } try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
            int N = Integer.parseInt(br.readLine());

            int ans = 1;
            while (ans < N) {
                ans *= 2;
            }

            if (ans > N) {
                ans /= 2;
            }

            System.out.println(ans);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } IOException | NumberFormatException e {
            e.printStackTrace();
            System.exit(0);
        } e.printStackTrace() e.printStackTrace e System.exit(0) System.exit System 0 catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        } final Exception e {
            e.printStackTrace();
            System.exit(0);
        } e.printStackTrace() e.printStackTrace e System.exit(0) System.exit System 0 {
            int N = Integer.parseInt(br.readLine());

            int ans = 1;
            while (ans < N) {
                ans *= 2;
            }

            if (ans > N) {
                ans /= 2;
            }

            System.out.println(ans);
        } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)) BufferedReader br = new BufferedReader(new InputStreamReader(System.in)) new BufferedReader(new InputStreamReader(System.in)) int N = Integer.parseInt(br.readLine()); N Integer.parseInt(br.readLine()) Integer.parseInt Integer br.readLine() br.readLine br int ans = 1; ans 1 while (ans < N) {
                ans *= 2;
            } ans < N ans N {
                ans *= 2;
            } ans *= 2 ans 2 if (ans > N) {
                ans /= 2;
            } ans > N ans N {
                ans /= 2;
            } ans /= 2 ans 2 System.out.println(ans) System.out.println System.out System System.out ans final String[] args args
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

class Main {
    public static void main(final String[] args) throws Exception {

        try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in));) {
            int N = Integer.parseInt(br.readLine());

            int ans = 1;
            while (ans < N) {
                ans *= 2;
            }

            if (ans > N) {
                ans /= 2;
            }

            System.out.println(ans);
        } catch (IOException | NumberFormatException e) {
            e.printStackTrace();
            System.exit(0);
        } catch (final Exception e) {
            e.printStackTrace();
            System.exit(0);
        }
    }
}