#include<bits/stdc++.h> using namespace std; int main(){ int n=23121,m ; //cin>>n; vector<int>a={2,4,9},b,c; /*while(cin>>m){ a.push_back(m); }*/ sort(a.begin(),a.end()); while(n/10){ c.push_back(n%10); n/=10; } c.push_back(n); int target=0; for(int i=c.size()-1;i>=0;i--){ if(target==1){ b.push_back(a.back()); continue; } for(int j=0;j<a.size();j++){ if(c[i]==a[j]){ b.push_back(c[i]); break; } if(c[i]>a[j]){ b.push_back(a[j]); target=1; break; } } } int sum=0; for(int i =0;i<b.size();i++){ sum+=b[i]*pow(10,b.size()-i-1); } cout<<sum<<endl; }