Submission

Score: 100

User: korn234

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-12 22:55:25

#include <iostream>
#include <algorithm>
using namespace std;
int main(){
    string s;
    cin>>s;
    sort(s.begin(), s.end());
    for (size_t i=0; i<s.length(); i++){
        if ((i == 0 || s[i] != s[i - 1]) && (i == s.length() - 1 || s[i] != s[i + 1])){
            cout << s[i];
            break;
        }
    }
}