Submission

Score: 100

User: HawThorns

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-12 19:51:07

#include <iostream>
#include <set>
#include <algorithm>
#include <map>
using namespace std;

int main(){
       string temp;
       map<char,int> stuff ;
       getline(cin, temp);
       for(const auto &ch: temp){
              if(stuff.find(ch) != stuff.end()){
                     stuff[ch]++;
              }
              else
              {
                     stuff.insert( {ch,0} );
              }
       }
       //sort(stuff.begin(),stuff.end());
       for(const auto &par : stuff){
              //cout << "{"<< par.first<<"," <<par.second <<"}" << endl;
              if(par.second == 0){
                     cout << par.first;
                     break;
              }
       }
       return 0;
}