Submission

Score: 100

User: FIrmTInn

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-11 22:37:27

#include<iostream>
using namespace std;
int main(){
    string str;
    cin >> str;
    int count[26] = {0},idx = 0;
    char str1[100], minstr = 'Z';
    int n = str.length();
    for(int i=0;i<n;i++){
        count[str[i]-'A']++;
    }
    for(int i=0;i<n;i++){
        if(count[str[i]-'A'] == 1){
            str1[idx] = str[i];
            idx++;
        }
    }
    for(int i=0;i<idx;i++){
        if(str1[i] < minstr){
            minstr = str1[i];
        }
    }
    cout << minstr;


    return 0;
}