Submission

Status:

[PPPPPPPPPP]

Subtask/Task Score:

{100/100}

Score: 100

User: matcherbrainner

Problemset: เรียงสตริง

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-04 10:15:03

#include <bits/stdc++.h>
using namespace std;
int main() {
    string s;
    cin >> s;
    set<char> st;
    for (char c : s) {
        if (isupper(c) || st.find(tolower(c)) == st.end()) {
            st.insert(c);
        }
    }
    for (char c : st) {
        cout << c << " ";
    }
}