View Compilation Error

0_0_30689968_5180.cpp: In member function 'void KMP::go(int&)':
0_0_30689968_5180.cpp:51:18: error: cast from 'char*' to 'int' loses precision [-fpermissive]
      ans %= (int)P;
                  ^
0_0_30689968_5180.cpp:58:15: error: cast from 'char*' to 'int' loses precision [-fpermissive]
   ans %= (int)P;
               ^