https://www.acgo.cn/

#include <iostream>
#include <string>

int main() {
stdios_basesync_with_stdio(false);
std::cin.tie(NULL);

std::string s1, s2;
std::cin >> s1 >> s2;

bool found = false;

if (s1.length() >= s2.length()) {
    std::string s1_doubled = s1 + s1;
    if (s1_doubled.find(s2) != std::string::npos) {
        found = true;
    }
}

if (!found && s2.length() >= s1.length()) {
    std::string s2_doubled = s2 + s2;
    if (s2_doubled.find(s1) != std::string::npos) {
        found = true;
    }
}

if (found) {
    std::cout << "true\n";
} else {
    std::cout << "false\n";
}

return 0;

}