Submission

Score: 100

User: posnfor2

Problemset: เรียงสตริง

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-10 15:44:24

#include <bits/stdc++.h>

using namespace std;

int main()
{
    string s;
    getline(cin ,s);
    if(s.size() > 30){
        return 0;
    }
    string letters;
    for(char c : s){
        if(isalpha(c)){
            letters += c;
        }
    }
    sort(letters.begin() , letters.end());
    letters.erase(unique(letters.begin(), letters.end()) ,letters.end());
    for(int i = 0; i < (int)letters.size(); i++){
        if(i > 0){
            cout << " ";
        }
        cout << letters[i];
    }
}