Submission

Score: 100

User: idinkinjai

Problemset: สตริงซ้ำซ้ำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-17 21:04:34

#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    string s1,s2;
    cin>>s1>>s2;
    set<char> c1, c2;
    for (int i=0;i<(int)s1.length();i++){
        c1.insert(s1[i]);
    }
    for (int i=0;i<(int)s2.length();i++){
        c2.insert(s2[i]);
    }
    vector<char> v;
    set_intersection(c1.begin(),c1.end(),c2.begin(),c2.end(),back_inserter(v));
    for (auto &c: v){
        cout <<c<<" ";
    }
    return 0;
}