Submission

Score: 100

User: Dark_kingdom

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-12 13:29:58

#include <iostream>
#include <string>
using namespace std;

int main()
{
	string s;
	cin>>s;
	
	int count[26]={0};
	
	for(int i = 0; i<s.length(); i++)
	{
		count[s[i]-'A']+=1;
	}
	
	for(int i = 0;i<26; i++)
	{
		if (count[i] == 1)
		{
			cout<<(char)('A'+i);
			return 0;
		}
	}
}