foo.cpp:1:1: error: 'include' does not name a type
 include<cstdio> include<algorithm>
 ^
foo.cpp: In function 'int find(double)':
foo.cpp:12:21: error: 'abs' was not declared in this scope
 } if (abs(l[ll]-flag)>abs(l[rr]-flag)) return rr;
                     ^
foo.cpp:7:8: warning: unused variable 'd' [-Wunused-variable]
 double d;
        ^
foo.cpp: In function 'int main()':
foo.cpp:16:14: error: 'scanf' was not declared in this scope
 scanf("%d",&n);
              ^
foo.cpp:18:1: error: 'sort' is not a member of 'std'
 std::sort(l+1,l+1+n);
 ^
foo.cpp:22:15: error: 'abs' was not declared in this scope
 if (abs(d-gold)<min) {
               ^
foo.cpp:26:28: error: 'printf' was not declared in this scope
 } printf("%d\n%d",l[a],l[b]);
                            ^
foo.cpp: In function 'int find(double)':
foo.cpp:14:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^