View Compilation Error

0_0_37688531_27688.cpp: In function 'void f1()':
0_0_37688531_27688.cpp:15:2: error: 'p' was not declared in this scope
  p=0;
  ^
0_0_37688531_27688.cpp:16:2: error: 'a' was not declared in this scope
  a[0]=1;
  ^
0_0_37688531_27688.cpp: In function 'long long int fm(long long int)':
0_0_37688531_27688.cpp:33:8: error: 'p' was not declared in this scope
  right=p;
        ^
0_0_37688531_27688.cpp:38:6: error: 'a' was not declared in this scope
   if(a[mid]>=n){
      ^
0_0_37688531_27688.cpp:44:4: error: 'a' was not declared in this scope
  x=a[mid];
    ^