View Compilation Error

0_0_36858849_11949.cpp: In function 'void solve()':
0_0_36858849_11949.cpp:6:6: error: 'n' was not declared in this scope
  if (n==2){
      ^
0_0_36858849_11949.cpp:10:6: error: 'n' was not declared in this scope
  if (n&1){
      ^