运行 ID: 48620

Main.cc: In function ‘int main()’:
Main.cc:6:7: error: ‘l’ was not declared in this scope
  cin>>l>>n;
       ^
Main.cc:6:10: error: ‘n’ was not declared in this scope
  cin>>l>>n;
          ^
Main.cc:6:10: note: suggested alternative: ‘na’
  cin>>l>>n;
          ^
          na
Main.cc:8:3: error: ‘a’ was not declared in this scope
   a[i]=1;
   ^
Main.cc:14:4: error: ‘a’ was not declared in this scope
    a[i]=0;
    ^
Main.cc:19:6: error: ‘a’ was not declared in this scope
   if(a[i]==1) c++;
      ^
Main.cc:5:8: warning: unused variable ‘na’ [-Wunused-variable]
  int L,na[10005];
        ^~