C++ 代码

#include<bits/stdc++.h>
using namespace std;
int main(){
    string a,b;
    cin>>a>>b;
    string s1=a+a,s2=b+b;
    if((s1.find(b)!=string::npos)||(s2.find(a)!=string::npos)){
        cout<<"true";
    }
    else cout<<"false";
    return 0;
}