View Compilation Error

0_0_39640103_15483.cpp: In function 'int main()':
0_0_39640103_15483.cpp:18:28: error: expected ';' before 'cout'
   18 |                 cin>>n>>m;a
      |                            ^
      |                            ;
   19 |                 cout<<2*(n+m)-1<<'\n';
      |                 ~~~~