$O(n)$
#include<iostream> #include<string> using namespace std; string p, q; int n, r; int main() { cin >> p >> n; while (n--) cin >> q, r += (q + q).find(p) != string::npos; cout << r; return 0; }
#include<iostream> #include<string> using namespace std; string p, q; int n, r; int main() { cin >> p >> n; while (n--) cin >> q, r += (q + q).find(p) != string::npos; cout << r; return 0; }
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