def create_num_line():
s = str()
for i in range(1, 1001):
s += str(i)
return s
s = create_num_line()
n = int(input())
print(s[n-1])#include <bits/stdc++.h>
using namespace std;
string itos(int x){
string s;
while(x){
s += '0' + x % 10;
x /= 10;
}
reverse(s.begin(), s.end());
return s;
}
int main(){
string s;
for(int i = 1; s.size() < 1000; i++){
s += itos(i);
}
int n;
scanf("%d", &n);
printf("%c\n", s[n - 1]);
return 0;
}
1633C - Kill the Monster | 1611A - Make Even |
1030B - Vasya and Cornfield | 1631A - Min Max Swap |
1296B - Food Buying | 133A - HQ9+ |
1650D - Twist the Permutation | 1209A - Paint the Numbers |
1234A - Equalize Prices Again | 1613A - Long Comparison |
1624B - Make AP | 660B - Seating On Bus |
405A - Gravity Flip | 499B - Lecture |
709A - Juicer | 1358C - Celex Update |
1466B - Last minute enhancements | 450B - Jzzhu and Sequences |
1582C - Grandma Capa Knits a Scarf | 492A - Vanya and Cubes |
217A - Ice Skating | 270A - Fancy Fence |
181A - Series of Crimes | 1638A - Reverse |
1654C - Alice and the Cake | 369A - Valera and Plates |
1626A - Equidistant Letters | 977D - Divide by three multiply by two |
1654B - Prefix Removals | 1654A - Maximum Cake Tastiness |