Submission

Score: 100

User: Newton4566

Problemset: สตริงซ้ำซ้ำ

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-24 18:18:09

#include <iostream>
#include <string>
using namespace std;

int main() {
    string a, b;
    getline(cin, a);
    getline(cin, b);

    bool used[256] = {false};
    bool first = true;

    for (char c : a) {
        if (b.find(c) != string::npos && !used[c]) {
            used[c] = true;

            if (!first) {
                cout << ' ';
            }
            cout << c;
            first = false;
        }
    }

    cout << endl;

    return 0;
}