using namespace std; int x,n,pi,ans; int main(){ cin>>x>>n; for(int i=1;i<=n;i++){ cin>>pi; ans+=pi; } cout<<x*(n+1)-ans; return 0; }
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0
exit code: 0, checker exit code: 0