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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define fastio ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
  5. #define ll long long
  6. void solve() {
  7.     //dharmil here
  8.     string x; cin>>x;
  9.  
  10.     int s[x.size()];
  11.     char mx = 'a'-1;;
  12.     for(int i =x.size()-1;i>=0;i--)
  13.     {
  14.         if(x[i] > mx){
  15.             mx = x[i];
  16.             s[i] = i;
  17.         }else if(x[i] == mx){
  18.             s[i] = i;
  19.         }else{
  20.             s[i] = s[i+1];
  21.         }
  22.     }
  23.     string b;
  24.     int i=0;
  25.     while( i < x.size()){
  26.        b += x[s[i]];
  27.        i = s[i] + 1;
  28.     }
  29.  
  30.     cout << b << endl;
  31. }
  32.  
  33. int main() {
  34.     fastio;
  35.     int t;
  36.     cin >> t;
  37.     while (t--) {
  38.         solve();
  39.     }
  40.     return 0;
  41. }
Success #stdin #stdout 0.01s 5284KB
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stdin
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2
abzdczz
abczabcyabcxabck
stdout
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zzz
zyxk
https://ideone.com/jkmKMt
language:
C++ (gcc 8.3)
created:
254 days ago
visibility:
public

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