#include <iostream>

 #include <cstdio>

 using namespace std;

 int main() {

     int len1, len2;

     while (cin >> len1) {

         int code[] = {};

         int next[] = {};

         for (int i = ; i <= len1; i++) {

             scanf("%d", &code[i]);

         }

         int index = ;

         for (int i = ; i <= len1; i++) {

             index = code[index+] == code[i] ? index+ : ;

             next[i] = index;

         }

         cin >> len2;

         index = ;

         int test, result;

         for (int i = ; i <= len2; i++) {

             scanf("%d", &test);

             if (index != len1) {

                 index = code[index+] == test ? index+ : next[index];

                 if (index == len1) {

                     result = i-len1;

                 }

             }

         }

         index == len1 ? cout << result << endl : cout << "no solution\n";

     }

     return ;

 }