Submission

Score: 20

User: kf._.exe

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-20 19:49:51

#include<bits/stdc++.h>
using namespace std;
#define fastio ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define dbg(x) cout << #x << " = " << x  << '\n';
#define int long long
#define dd double
#define ld long double

void solve(){
     string s;cin >> s;
     int ans=0;
     for(int i=1;i<s.length();++i) if(s[i] == s[ans]) ++ans;
     cout << s[ans]<<endl;

}

int32_t main(){
       fastio;
           int T = 1;
           //cin >> T
           while(T--) solve();
       return 0;
}