Submission

Score: 100

User: andamanlnwza007

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-02 16:14:08

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
int main(){
	string result,sum,rsum;
	cin>>result;
	sort(result.begin(),result.end());
	int n = result.length() , j=0;
	for (int k = 0 ; k <n ; k++){
		if(k!=n-1 and result.substr(k,1)!=result.substr(k+1,1) ){
			if(k!=0 and result.substr(k-1,1) !=result.substr(k,1) or k==0){
				cout<<result.substr(k,1);
				break;
			}
		}
		
	}
}