//#1 problem
#include <iostream>

using namespace std;

int main(){
	string s, t;
	cin >> s;
	for(int i = s.size() / 2 - 1; i >= 0; --i){
		t += s[i];
	}
	if(s.size() % 2 == 1){
		t += s[s.size() / 2];
		for(int i = s.size() - 1; i >= s.size() / 2 + 1; --i){
			t += s[i];
		}
	}else{
		for(int i = s.size() - 1; i >= s.size() / 2; --i){
			t += s[i];
		}
	}
	cout << t << endl;
	return 0;
}

//#2 problem
#include <iostream>
#include <map>
#include <vector>

using namespace std;

int singleNumber(vector<int>& nums) {
	map<int, int> m;
	map<int, int>::iterator it;
	for(int i = 0; i < nums.size(); ++i){
		m[nums[i]]++;
	}
	for(it = m.begin(); it != m.end(); ++it){
		if((*it).s != 2){
			return (*it).f;
		}
	}
}

//#3 problem
#include <iostream>

using namespace std;

int a[30], b[30];

int main(){
	string s, t;
	cin >> s >> t;
	for(int i = 0; i < s.size(); ++i){
		int cur = s[i] - 'a';
		a[cur]++;
	}
	for(int i = 0; i < t.size(); ++i){
		int cur = t[i] - 'a';
		b[cur]++;
	}
	for(int i = 0; i < t.size(); ++i){
		int cur = t[i] - 'a';
		if(b[cur] > a[cur]){
			cout << (char)(cur + 'a');
			b[cur]--;
		}
	}
	return 0;
}

//#4 problem
#include <iostream>

using namespace std;

int a[5];

int main(){
	string s;
	cin >> s;
	for(int i = 0; i < s.size(); i += 2){
		a[s[i] - '0']++;
	}
	int cnt = a[1] + a[2] + a[3];
	int col = 0;
	for(int i = 1; i <= 3; ++i){
		if(a[i] != 0){
			for(int j = 0; j < a[i]; ++j){
				col++;
				cout << i;
				if(col != cnt)
					cout << "+";
			}
		}
	}
	return 0;
}

//#5 problem
#include <iostream>

using namespace std;

const int inf = (int)1e9;

int n, a[1100];

int main(){
	cin >> n;
	for(int i = 0; i < n; ++i){
		int x;
		cin >> x;
		a[x]++;
	}
	int cnt = 0;
	for(int i = 0; i < 1100; ++i){
		if(a[i] > 0)
			cnt++;
	}
	int mx = -inf;
	for(int i = 0; i < 1100; ++i){
		mx = max(mx, a[i]);
	}
	cout << mx << " " << cnt << endl;
	return 0;
}