Submission

Score: 100

User: cj

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-05 10:22:03

#include<bits/stdc++.h>
using namespace std;

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