Submission

Score: 100

User: bestisyis...programming

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-07 19:18:14

#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<chars.length();i++){
		if(a[chars[i]-'A']==1){
			cout << chars[i];
			return 0;
		}
	}
}