#include <bits/stdc++.h> using namespace std; #define rep(i,a,b) for(LL i = a;i<b; i++) #define rrep(i,a,b) for(LL i = a;i>=b; i--) #define INF ((1LL<<62)-(1LL<<31)) #define ooki 9,223,372,036,854,775,807 #define tii -9,223,372,036,854,775,808 typedef long long LL; int main(){ string n;cin>>n; if(n.size()==2){cout<<0<<n<<endl;} if(n.size()==1){cout<<"00"<<n<<endl;} if(n.size()==3){cout<<n<<endl;} }