代码

#include <iostream>
#include <string>

using namespace std;

int main()
{
    string s1, s2;
    cin >> s1 >> s2;

    if(s2.size() > s1.size()) swap(s1, s2);
    s1 += s1;

    if(s1.find(s2) != -1) cout << "true";
    else cout << "false";

    return 0;
}