Submission

Score: 100

User: bestisyis...programming

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-07 18:32:12

#include <iostream>
#include <algorithm>
using namespace std;
int main(){
	string chars;
	cin >> chars;
	int a[27] = {0};
	sort(chars.begin(),chars.end());
	for(int i=0;i<chars.length();i++){
		a[chars[i]-'A']++;
	}
	for(int i=0;i<27;i++){
		if(a[i]==1){
			cout << (char)(i+'A');
			return 0;
		}
	}
}