Main.cc:5:14: error: expected ‘,’ or ‘;’ before ‘:’ token
    5 | int mod=1e9+7:
      |              ^
Main.cc:8:1: error: ‘cin’ does not name a type
    8 | cin.tie(NULL);
      | ^~~
Main.cc:10:1: error: ‘cin’ does not name a type
   10 | cin>>n>>m;vector<int> a(n);for(int i=0;i<n;i++){
      | ^~~
Main.cc:10:28: error: expected unqualified-id before ‘for’
   10 | cin>>n>>m;vector<int> a(n);for(int i=0;i<n;i++){
      |                            ^~~
Main.cc:10:40: error: ‘i’ does not name a type
   10 | cin>>n>>m;vector<int> a(n);for(int i=0;i<n;i++){
      |                                        ^
Main.cc:10:44: error: ‘i’ does not name a type
   10 | cin>>n>>m;vector<int> a(n);for(int i=0;i<n;i++){
      |                                            ^
Main.cc:12:5: error: expected constructor, destructor, or type conversion before ‘(’ token
   12 | sort(a.begin(),a.end());
      |     ^
Main.cc:14:1: error: expected unqualified-id before ‘for’
   14 | for(int i=0;i<n;i++){sum+=(long long)(i+1)*a[i];sum %=mod;}
      | ^~~
Main.cc:14:13: error: ‘i’ does not name a type
   14 | for(int i=0;i<n;i++){sum+=(long long)(i+1)*a[i];sum %=mod;}
      |             ^
Main.cc:14:17: error: ‘i’ does not name a type
   14 | for(int i=0;i<n;i++){sum+=(long long)(i+1)*a[i];sum %=mod;}
      |                 ^
Main.cc:15:1: error: ‘cout’ does not name a type
   15 | cout<<sum<<endl;
      | ^~~~
Main.cc:16:1: error: expected unqualified-id before ‘return’
   16 | return 0;}
      | ^~~~~~
Main.cc:16:10: error: expected declaration before ‘}’ token
   16 | return 0;}
      |          ^