import java.io.IOException;
import java.io.InputStream;
import java.util.NoSuchElementException;


public class Main {

	public static void main(String[] args) {
		FastScanner sc = new FastScanner();
		int N = sc.nextInt();
		int[] a = sc.nextIntList(2 * N - 1);
		
		int left = 0;
		int right = 200000;
		while (left <= right) {
			int k = left + right >>> 1;
			if (check(a, k)) {
				left = k + 1;
			} else {
				right = k - 1;
			}
		}
		System.out.println(right);
	}
	
	private static boolean check (int[] a, int k) {
		int N  = a.length / 2;
		int n = a.length;

		int cnt1 = -1;
		boolean flg1 = false;
		for (int i = N; i < n - 1; i ++) {
			boolean b1 = a[i] >= k;
			boolean b2 = a[i + 1] >= k;
			if (b1 == b2) {
				flg1 = b1;
				cnt1 = n - i - 1;
				break;
			}
		}

		int cnt2 = -1;
		boolean flg2 = false;
		for (int i = N; i >= 1; i --) {
			boolean b1 = a[i] >= k;
			boolean b2 = a[i - 1] >= k;
			if (b1 == b2) {
				flg2 = b1;
				cnt2 = i;
				break;
			}
		}
		
		if (cnt1 < 0 && cnt2 < 0) {
			int x = a[N] >= k ? 1 : 0;
			return (x + N) % 2 == 1;
		} else {
			return cnt2 < cnt1 ? flg1 : flg2;
		} 
	}
}



class FastScanner {
	public static String debug = null;

	private final InputStream in = System.in;
	private int ptr = 0;
	private int buflen = 0;
	private byte[] buffer = new byte[1024];
	private boolean eos = false;

	private boolean hasNextByte() {
		if (ptr < buflen) {
			return true;
		} else {
			ptr = 0;
			try {
				if (debug != null) {
					buflen = debug.length();
					buffer = debug.getBytes();
					debug = "";
					eos = true;
				} else {
					buflen = in.read(buffer);
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			if (buflen < 0) {
				eos = true;
				return false;
			} else if (buflen == 0) {
				return false;
			}
		}
		return true;
	}

	private int readByte() {
		if (hasNextByte())
			return buffer[ptr++];
		else
			return -1;
	}

	private static boolean isPrintableChar(int c) {
		return 33 <= c && c <= 126;
	}

	private void skipUnprintable() {
		while (hasNextByte() && !isPrintableChar(buffer[ptr]))
			ptr++;
	}

	public boolean isEOS() {
		return this.eos;
	}

	public boolean hasNext() {
		skipUnprintable();
		return hasNextByte();
	}

	public String next() {
		if (!hasNext())
			throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int b = readByte();
		while (isPrintableChar(b)) {
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}

	public long nextLong() {
		if (!hasNext())
			throw new NoSuchElementException();
		long n = 0;
		boolean minus = false;
		int b = readByte();
		if (b == '-') {
			minus = true;
			b = readByte();
		}
		if (b < '0' || '9' < b) {
			throw new NumberFormatException();
		}
		while (true) {
			if ('0' <= b && b <= '9') {
				n *= 10;
				n += b - '0';
			} else if (b == -1 || !isPrintableChar(b)) {
				return minus ? -n : n;
			} else {
				throw new NumberFormatException();
			}
			b = readByte();
		}
	}

	public int nextInt() {
		return (int) nextLong();
	}

	public long[] nextLongList(int n) {
		return nextLongTable(1, n)[0];
	}

	public int[] nextIntList(int n) {
		return nextIntTable(1, n)[0];
	}

	public long[][] nextLongTable(int n, int m) {
		long[][] ret = new long[n][m];
		for (int i = 0; i < n; i ++) {
			for (int j = 0; j < m; j ++) {
				ret[i][j] = nextLong();
			}
		}
		return ret;
	}

	public int[][] nextIntTable(int n, int m) {
		int[][] ret = new int[n][m];
		for (int i = 0; i < n; i ++) {
			for (int j = 0; j < m; j ++) {
				ret[i][j] = nextInt();
			}
		}
		return ret;
	}
}

Measured memory_bytes: 10672