Submission

Score: 20

User: helloskibidi

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-05 09:38:58

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

bool check[60];

int main(){
    string n;
    cin >> n;
    
    vector<int> x;

    for(int i=0;i<n.length();i++){
        int temp = n[i] - '0';
        x.push_back(temp);
    }
    
    sort(x.begin() , x.end());

    int minbef = 0;
    for(int i=0;i<x.size();i++){
        for(int j=i;j<x.size();j++){
            if(x[i] == x[j]) {
                x.erase(x.begin()+i);
                x.erase(x.begin()+j);   
            }
        }
    }

    sort(x.begin() , x.end());
    
    char c =  x[0] + '0';

    // cout << min << "\n";
    cout << c;
}