Submission

Score: 100

User: itskrid

Problemset: เรียงสตริง

Language: cpp

Time: 0.002 second

Submitted On: 2025-11-16 16:33:52

#include <bits/stdc++.h>
using namespace std;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    string s;
    cin >> s;
    unordered_set<char> seen;
    vector<char> v;
    for (char c : s) {
        if (seen.insert(c).second) v.push_back(c);
    }
    sort(v.begin(), v.end());
    for (size_t i = 0; i < v.size(); ++i) {
        if (i) cout << " ";
        cout << v[i];
    }
    cout << '\n';
    return 0;
}