#include<stdio.h>

#define PLUS	0;
#define MINUS	1;

int main() {
	int dataNum = 0;
	double data[1000];
	char str='\0';
	int mode = PLUS;

	// データ数取得
	scanf("%d\n", &dataNum);

	// 配列初期化
	for (int i = 0; i < dataNum + 1; i++)
		data[i] = 0;

	// 数値に変換
	for (int i = 0; str != '\n'; ) {
		str = getchar();
		if (str == ' ') {
			i++;
			mode = PLUS;
		}
		else if (str >= '0' && str <= '9') {
			if(mode == 0)
				data[i] = data[i] * 10 + (double)str - (double)'0';
			else
				data[i] = data[i] * 10 - (double)str + (double)'0';
		}
		else if (str == '-') {
			mode = MINUS;
		}
	}

	// ソート
	int box = 0;
	int flg = 0;
	for (int i = 0;; ) {
		if (data[i] > data[i + 1]) {
			box = data[i];
			data[i] = data[i + 1];
			data[i + 1] = box;
			flg++;
		}
		i++;
		if (i == dataNum - 1) {
			if (flg == 0)
				break;
			else
				i = flg = 0;
		}
	}

	// 結果表示
	if (dataNum % 2 == 0) {
		printf("%d", ((data[dataNum / 2 - 1] + data[dataNum / 2]) / 2));
	}
	else
		printf("%d", data[dataNum / 2]);

	return 0;
}