#include<iostream>

using namespace std;

char *strcat(char *str1, int l1, char *str2, int l2)
{
    char *sr = new char[l1 + l2];
    for (int i = 0; i < l1; i++){
        sr[i] = str1[i];
    }
    for (int i = 0; i < l2; i++){
        sr[i + l1] = str2[i];
    }
    return sr;
}
int main()
{
    int l1,l2;
    cin >> l1 >> l2;
    char *str1 = new char[l1];
    for(char i=0;i<l1;i++){
        cin>>str1[i];
    }
    char*str2=new char[l2];
    for(char i=0;i<l2;i++){
        cin>>str2[i];
    }
    char *resultstr = strcat(str1, l1, str2, l2);
    delete[] str1;
    delete[] str2;

    cout<<"Result string:"<< endl<<resultstr << endl;

    delete[] resultstr;
    return 0;
}