Submission

PP------P-

Score: 30

User: Nightingale

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-03-31 20:29:46

#include <bits/stdc++.h>
using namespace std;
int main() 
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  string a;
  cin >> a;
  vector<char> keep;
  for(int i=0;i<a.size();i++){
    keep.push_back(a[i]);
  }
  for(int i=0;i<a.size();i++){
    if(count(keep.begin(),keep.end(),a[i])==1){
      cout << keep[i];
      return 0;
    }
  }
}