View Compilation Error

0_0_19218400_29016.cpp:3:1: error: expected unqualified-id before numeric constant
 1 //快速读入的板子就不贴啦！
 ^
0_0_19218400_29016.cpp:5:2: error: expected unqualified-id before numeric constant
  3 LL t1, t2, t3;
  ^
0_0_19218400_29016.cpp:6:2: error: expected unqualified-id before numeric constant
  4 LL f(LL x, LL y)
  ^
0_0_19218400_29016.cpp:10:2: error: expected unqualified-id before numeric constant
  8 
  ^