#include <string>
void This_is_normal() {
    int normal_color_var;
}

////<r
using namespace std;
int BLUE() {
    int this_is_blue;
    string blue_var = "this is red.";
    string s = "= is red too.";
    char c = 'c';
    Pair.first;
    //note is not grey
    if (s < "use < is ok") {
        s = "but use greater is not ok (shown below)"
    }
}
//>

////<r
int strange_BLUE() {
    s = "use < is ok";
    assert("but use greater is not ok" > s && and_rest_words_in_this_line_is_grey);
    int and_it; //becomes_normal
}
//>

void normal_again() {
    int a;
}

////<
not blue;
>

//<r
not blue;
>

////<d
I think HTML is the reason
>

//same in java
////<b
//ok
////>

#but this feature
a=input()
#////<b
#is not in python
////<b
b=input()+" is normal"
////>
#python's note is # not //

begin
//or in pascal
////<
read(a);
////>
{pascal's note} is {{}}

为啥标签栏上还是 UOJ