#include
using namespace std;
int countDigit(int n) { int digits;
while (n != 0)
{
n = n / 10;
digits++;
}
return digits;
}
int main() { int number; cin >> number;
int cycles = countDigit(number);
int digitOfANumber[cycles];
for (int i = cycles - 1; i > 0; i--)
{
digitOfANumber[i] = number % 10;
number = number / 10;
}
cout << digitOfANumber[0];
return 0;
}