Submission

Score: 100

User: ultraman9845

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-13 17:43:42

#include<iostream>
#include<string>
#include<vector>

typedef long long ll;

using namespace std;
int main()
{
	string s;
	cin >> s ;
	int l;
	l = s.length();
	vector<ll> alp(128, 0);
    for (auto e : s) {
        alp[e]++;
    }
    for (int i = 0; i < 128; i++) {
       if (alp[i] == 1)
       {
    	cout << char(i) ;
    	return 0;
	   }
    }
}