[Codechef] ATM (HS08TEST)

The problem is totally straightforward. Only possible cause for wrong answer response is if x = y. In that case you should check if x+0.5 > y or not.

#include <stdio.h>

int main()
{
    int x;
    double y;
    while (scanf("%d %lf",&x,&y)==2)
    {
        if (!(((double)x+0.5)>y) && !(x%5))
            printf("%.2lf\n",y-(double)x-0.5);
        else
            printf("%.2lf\n",y);
    }
    return 0;
}

Vibes of vi

Well, as a real late bloomer into the Linux distro I've suddenly gotten an urge to use VI. A command based text editor. I started learning it today using the page [ How to use the vi Editor ]. A really nice tutorial to kick it off. At first I thought "Why?? When I have so many good editors that know what a mouse is and have integrated command line support??". The answer came in when I first use the command

cw 

It immediately caught my attention, what I could do with it. I could use it in my coding for so many occurrences. Whenever G++ served me with any error, I could search for it using

/ (slash)

And replace it with this command.
I'm currently learning more detailed stuff on this. Hope to replace GUI based IDEs with it someday.

Command Summary

STARTING vi

vi filename    edit a file named "filename"
vi newfile     create a new file named "newfile"

ENTERING TEXT

i            insert text left of cursor
a            append text right of cursor

MOVING THE CURSOR

h            left one space
j            down one line
k            up one line
l            right one space

BASIC EDITING

x         delete character
nx        delete n characters
X         delete character before cursor
dw        delete word
ndw       delete n words
dd        delete line
ndd       delete n lines
D         delete characters from cursor to end of line
r         replace character under cursor
cw        replace a word
ncw       replace n words
C         change text from cursor to end of line
o         insert blank line below cursor
(ready for insertion)
O         insert blank line above cursor
(ready for insertion)
J         join succeeding line to current cursor line
nJ        join n succeeding lines to current cursor line
u         undo last change
U         restore current line

MOVING AROUND IN A FILE

w            forward word by word
b            backward word by word
$            to end of line
0 (zero)     to beginning of line
H            to top line of screen
M            to middle line of screen
L            to last line of screen
G            to last line of file
1G           to first line of file
f   scroll forward one screen
b   scroll backward one screen
d   scroll down one-half screen
u   scroll up one-half screen
n            repeat last search in same direction
N            repeat last search in opposite direction

CLOSING AND SAVING A FILE

ZZ            save file and then quit
:w            save file
:q!            discard changes and quit file

Linux File Manager Launchers

Only recently, I've started to use Ubuntu (Linux Distro FTWDK). After fighting with the kernel night after night and constantly resulting with all sorts of crashes or f-ups, I've finally decided to keep a Windows Dual Boot for my Gaming needs. Wine still isn't in much control yet. Anyway. I finished installing Ubuntu 11.10 and ofcourse, like all the ordinary users I've failed to find my taste in the new Unity desktop. So, I decided to try all the others. I installed XFCE, Gnome, LXDE. Among all of these LXDE acted to be the fastest, though only time will tell because usually my Linux installations end up in begging me to not experiment with them anymore. I kind of liked the idea of having different File Managers. So I collected all of their Launcher strings. Here they are.

Nautilus : nautilus --no-desktop
PCMan : exo-open --launch FileManager %u
Thunar : thunar /home/username

Storing them for future crashes :P