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  1. #include<bits/stdc++.h>
  2. #define ll long long
  3. #define vi vector<int>
  4. #define pb push_back
  5. using namespace std;
  6. int n;
  7. ll min_val(int n){
  8.   ll cnt=0;
  9.   int tmp=n;
  10.   while(n){
  11.     int ans=0;
  12.     while(tmp){
  13.       ans=max(ans,tmp%10);
  14.       tmp/=10;
  15.     }
  16.     n-=ans;
  17.     tmp=n;
  18.     cnt++;
  19.   }
  20.   return cnt;
  21. }
  22. int main(){
  23.   freopen("CAU2.INP ","r",stdin);
  24.   freopen("CAU2.OUT","w",stdout);
  25.   cin>>n;
  26.   cout<<min_val(n);
  27. 	return 0;
  28. }
Success #stdin #stdout 0.01s 5320KB
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stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/BfHhvi
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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