#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
string to_str(ll A){
    stringstream ss;
    ss << A;
    return ss.str();
}
main(){
    int N;
    cin >> N;
    string s;
    rep(i,1,N+1){
        s += to_str(i);
    }
    cout << s[N-1] << endl;
}