diff --git a/Gtkmm3/gtk117_colorpicker/src/MyWin.cc b/Gtkmm3/gtk117_colorpicker/src/MyWin.cc
index 095a432..b94d8bd 100644
--- a/Gtkmm3/gtk117_colorpicker/src/MyWin.cc
+++ b/Gtkmm3/gtk117_colorpicker/src/MyWin.cc
@@ -9,14 +9,15 @@ MyWin::MyWin()
 hbox(Gtk::ORIENTATION_HORIZONTAL,5),
 btnbox(Gtk::ORIENTATION_VERTICAL,5),
 frame_pos("Position"),
-frame_css_rgba("rgba() for css3"),
-frame_rgba_str("RGBA Code"),
+frame_css_rgba("rgb()/rgba() for css3"),
+frame_rgba_str("RGB(A) Code"),
 label_pos("(640,480)"),
 label_css_rgba("rgba(255,255,255,255)"),
 label_test("Color Settings And Position info"),
 label_color_str("#00000000"),
 btn_css_code("Copy Css3 Code"),
-btn_color_str("Copy RGB(A) String")
+btn_color_str("Copy RGB(A) String"),
+btn_select("Pick Color")
 {
     set_title("Color Picker");
     set_icon_name("org.gtk.daleclack");
@@ -36,6 +37,10 @@ btn_color_str("Copy RGB(A) String")
     btn_color_str.set_halign(Gtk::ALIGN_CENTER);
     btn_color_str.signal_clicked().connect(sigc::mem_fun(*this,&MyWin::btncolor_clicked));
 
+    btn_select.set_active(false);
+    btn_select.set_halign(Gtk::ALIGN_CENTER);
+    btn_select.signal_clicked().connect(sigc::mem_fun(*this,&MyWin::btnselect_clicked));
+
     //Add Gesture
     gesture = Gtk::GestureMultiPress::create(draw_area);
     gesture->set_button(1);
@@ -46,7 +51,7 @@ btn_color_str("Copy RGB(A) String")
 
     //Set image
     gtk_image_set_from_pixbuf(background.gobj(),sized->gobj());
-    //get_pixel_color(320,180);
+    get_pixel_color(320,180);
 
     //Add Color and Image Button
     color_btn.set_use_alpha();
@@ -64,6 +69,7 @@ btn_color_str("Copy RGB(A) String")
 
     btnbox.pack_start(color_btn);
     btnbox.pack_start(btn_back);
+    btnbox.pack_start(btn_select);
     btnbox.pack_start(btn_css_code);
     btnbox.pack_start(btn_color_str);
     btnbox.set_valign(Gtk::ALIGN_CENTER);
@@ -105,10 +111,10 @@ void MyWin::get_pixel_color(int x,int y){
 
     //Set Color to rgba
     red/=25;blue/=25;green/=25;alpha/=25;
-    color_set.set_red(red/255.0);
-    color_set.set_blue(blue/255.0);
-    color_set.set_green(green/255.0);
-    color_set.set_alpha(alpha/255.0);
+    color_set.set_red_u(red*257);
+    color_set.set_blue_u(blue*257);
+    color_set.set_green_u(green*257);
+    color_set.set_alpha_u(alpha*257);
 
     //Get Color set as a string
     label_css_rgba.set_label(color_set.to_string());
@@ -127,10 +133,18 @@ void MyWin::get_pixel_color(int x,int y){
 }
 
 void MyWin::gesture_pressed(int n_press,double x,double y){
-    char pos[57];
-    sprintf(pos,"(%.2f,%.2f)",x,y);
-    label_pos.set_label(pos);
-    get_pixel_color((int)x, (int)y);
+    if(btn_select.get_active()){
+        //Get Color at the position
+        char pos[57];
+        sprintf(pos,"(%.2f,%.2f)",x,y);
+        label_pos.set_label(pos);
+        get_pixel_color((int)x, (int)y);
+        btn_select.set_active(false);
+
+        //Unset custom cursor
+        auto gdkwin = background.get_window();
+        gdkwin->set_cursor();
+    }
 }
 
 void MyWin::btnback_clicked(){
@@ -190,3 +204,11 @@ void MyWin::btncolor_clicked(){
     Glib::ustring str = label_color_str.get_label();
     clipboard->set_text(str);
 }
+
+void MyWin::btnselect_clicked(){
+    //Set a cursor for selection on image
+    auto display = background.get_display();
+    auto gdkwin = background.get_window();
+    auto cursor = Gdk::Cursor::create(display,"crosshair");
+    gdkwin->set_cursor(cursor);
+}
diff --git a/Gtkmm3/gtk117_colorpicker/src/MyWin.hh b/Gtkmm3/gtk117_colorpicker/src/MyWin.hh
index 213c25f..acc1979 100644
--- a/Gtkmm3/gtk117_colorpicker/src/MyWin.hh
+++ b/Gtkmm3/gtk117_colorpicker/src/MyWin.hh
@@ -15,6 +15,7 @@ class MyWin : public Gtk::Window{
         Gtk::Label label_pos,label_css_rgba,label_test,label_color_str;
         Gtk::ColorButton color_btn;
         Gtk::Button btn_css_code,btn_color_str;
+        Gtk::ToggleButton btn_select;
         Gtk::DrawingArea draw_area;
         Glib::RefPtr<Gdk::Pixbuf> pixbuf;
         Glib::RefPtr<Gdk::Pixbuf> sized;
@@ -30,4 +31,5 @@ class MyWin : public Gtk::Window{
         void gesture_pressed(int n_press,double x,double y);
         void btncss_clicked();
         void btncolor_clicked();
+        void btnselect_clicked();
 };
\ No newline at end of file
diff --git a/cpp/algorithms/problem6.cpp b/cpp/algorithms/problem6.cpp
index 5d54236..5262796 100644
--- a/cpp/algorithms/problem6.cpp
+++ b/cpp/algorithms/problem6.cpp
@@ -1,32 +1,53 @@
-//http://acm.hdu.edu.cn/showproblem.php?pid=2004
+//http://acm.hdu.edu.cn/showproblem.php?pid=2005
 #include <cstdio>
 
 int main(int argc,char ** argv){
     int year,month,day,sum_day=0;
     while (scanf("%d/%d/%d",&year,&month,&day)!=EOF)
     {
+        sum_day=0;
         switch(month){
             case 1:
-                sum_day+=31;
+                sum_day = day;
                 break;
             case 2:
-                if(month%4 == 0 && month%100 != 0){
-                    sum_day += 60;
-                }else{
-                    sum_day += 59;
-                }
+                sum_day = 31+day;
                 break;
             case 3:
+                sum_day = 59+day;
+                break;
             case 4:
+                sum_day = 90+day;
+                break;
             case 5:
+                sum_day = 120+day;
+                break;
             case 6:
+                sum_day = 151+day;
+                break;
             case 7:
+                sum_day = 181+day;
+                break;
             case 8:
+                sum_day = 212+day;
+                break;
             case 9:
+                sum_day = 243+day;
+                break;
             case 10:
+                sum_day = 273+day;
+                break;
             case 11:
+                sum_day = 304+day;
+                break;
             case 12:
+                sum_day = 334+day;
+                break;
         }
+        if(year%4 == 0 && year%100 != 0 && month > 2){
+            sum_day += 1;
+        }
+        printf("%d\n",sum_day);
     }
     return 0;
 }
\ No newline at end of file