Submission

Score: 30

User: erng

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-05 21:52:39

#include <bits/stdc++.h>
using namespace std;

int k, c;
string n;

int main()
{
    cin>>n;
    for (int i=0; i<n.size(); i++)
    {
        k=0;
        for (int j=0; j<n.size();j++)
        {
            if (j==i) continue;
            if (n[i]==n[j]) 
            {
                k=1;
                break;
            }
        }
        if (k!=1)
        {
            cout<<n[i];
            return 0;
        }
    }
}