foo.cc:3:14: error: ‘i’ was not declared in this scope
    3 | int sum,duan=i,m,n,l[100086];
      |              ^
foo.cc: In function ‘int main()’:
foo.cc:5:14: error: ‘n’ was not declared in this scope; did you mean ‘yn’?
    5 |         cin>>n>>m;
      |              ^
      |              yn
foo.cc:5:17: error: ‘m’ was not declared in this scope; did you mean ‘tm’?
    5 |         cin>>n>>m;
      |                 ^
      |                 tm
foo.cc:7:22: error: ‘l’ was not declared in this scope
    7 |                 cin>>l[i];
      |                      ^
foo.cc:10:24: error: ‘l’ was not declared in this scope
   10 |                 if(sum+l[i]>m){
      |                        ^