题解（string?

#include <bits/stdc++.h>
// #define _INT_MAX 2147483647
// #define _LONG_LONG_MAX 9223372036854775807
// #define _MATH_DEFINES_DEFINED
// #define debug freopen("in.txt","r",stdin), freopen("out.txt","w",stdout);
#define ZERO 0
#define A 1
// #define CHARCTER ""
// #define CHARCTER_SPACE " "
// #define CHARACTER_LINE_BREAK "\n"
// #pragma GCC optimize("O2")
using namespace std;
// void _Output(auto _print, string _plus);
/*
  void _Output(auto _print, string _plus) {
  cout << _print << _plus; }
 */
int main(void) {
	ios::sync_with_stdio(false);
	cin.tie(ZERO);
	cout.tie(ZERO);
	string a;
	cin >> a;
	cout << a[a.size() - A];
	return ZERO; }