View Compilation Error

0_0_15267071_12144.cpp: In function 'LL calc(LL)':
0_0_15267071_12144.cpp:64:43: error: expected ';' before '(' token
         if(((p-1)%i==0||2*(p+1)%i==0))&&ok(i))ret=min(ret,i);
                                           ^
0_0_15267071_12144.cpp:64:41: error: label 'ok' used but not defined
         if(((p-1)%i==0||2*(p+1)%i==0))&&ok(i))ret=min(ret,i);
                                         ^