Submission

Score: 20

User: Kidmaiok

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-11 11:12:57

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define space << ' '
#define nl << endl

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    string n;
    bool found = 0;
    cin >> n;
    for(int i =0; i < n.size()-1;i++){
        char m = n[i];
        for(int j =0; j < n.size(); j++){
            if(i != j){
                if(m == n[j]){
                    found = 1;
                }
            }
        }
        if(!found){
            cout << m;
            return 0;
        }
        
    }
    
}