View Compilation Error

0_0_13648455_1078.cpp: In function 'void manacher()':
0_0_13648455_1078.cpp:41:6: error: expected ';' before 'else'
      else rad[i]=1;
      ^
0_0_13648455_1078.cpp: In function 'int main()':
0_0_13648455_1078.cpp:57:14: error: 'prep' was not declared in this scope
         prep();
              ^