Submission

Score: 100

User: tha_smith

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-12 15:25:36

#include <iostream>
using namespace std;

int ss[26];
int main() {
	string s;
	cin >> s;
	for(int i=0; i<s.size(); i++) {
		int n = int(s[i]);
		ss[n-65]++;
	}
	
	for(int i=0; i<26; i++) {
		if(ss[i]==1) {
			cout << char(i+65);
			break;
		}
	}
}