View Compilation Error

0_0_38242177_20944.cpp:2:2: error: expected unqualified-id before numeric constant
  2 using namespace std;
  ^
0_0_38242177_20944.cpp:3:2: error: expected unqualified-id before numeric constant
  3 long long int c,m,n,cuopai[25];
  ^
0_0_38242177_20944.cpp:4:2: error: expected unqualified-id before numeric constant
  4 long long int C(int n,int m){
  ^
0_0_38242177_20944.cpp:12:1: error: expected unqualified-id before numeric constant
 12 void init(){
 ^
0_0_38242177_20944.cpp:18:1: error: expected unqualified-id before numeric constant
 18 int main(){
 ^