View Compilation Error

0_0_16891920_21678.cpp: In function 'long long int Long_quick(long long int, long long int)':
0_0_16891920_21678.cpp:51:23: error: 'P' was not declared in this scope
   if(m&1) res=res*tmp%P;
                       ^
0_0_16891920_21678.cpp:52:15: error: 'P' was not declared in this scope
   tmp=tmp*tmp%P;
               ^
0_0_16891920_21678.cpp: In function 'int main()':
0_0_16891920_21678.cpp:65:26: error: 'P' was not declared in this scope
         cin>>n>>A>>B>>C>>P;
                          ^