#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using namespace std;

int main(){
    int x;
    cin>>x;
    if(x==1){cout<<1<<endl;return 0;}
    for(int i=x-1;i>=0;i--){
        cout<<i;
    }
    cout<<endl;
}