add examples

src/conteststruggles.lua

@@ -0,0 +1,7 @@
+n, k, d, s = io.read("*n", "*n", "*n", "*n")
+ans = (n * d - k * s) / (n - k)
+if ans < 0 or ans > 100 then
+    print("impossible")
+else
+    print(ans)
+end

src/conteststruggles.py

@@ -0,0 +1,7 @@
+n, k = [int(c) for c in input().split()]
+d, s = [int(c) for c in input().split()]
+ans = (n * d - k * s) / (n - k)
+if ans < 0 or ans > 100:
+    print("impossible")
+else:
+    print(f"{ans:.7f}")

src/hnappasetningaskipti.py

@@ -0,0 +1,60 @@
+table = """
+qwerty	dvorak	bjarki
+~	~	0
+1	1	2
+2	2	4
+3	3	8
+4	4	6
+5	5	1
+6	6	3
+7	7	5
+8	8	7
+9	9	9
+0	0	=
+-	[	-
+=	]	/
+q	'	b
+w	,	j
+e	.	a
+r	p	r
+t	y	k
+y	f	i
+u	g	g
+i	c	u
+o	r	s
+p	l	t
+[	/	.
+]	=	,
+a	a	l
+s	o	o
+d	e	e
+f	u	m
+g	i	p
+h	d	d
+j	h	c
+k	t	n
+l	n	v
+;	s	q
+'	-	;
+z	;	[
+x	q	]
+c	j	y
+v	k	z
+b	x	h
+n	b	w
+m	m	f
+,	w	x
+.	v	'
+/	z	~
+""".strip()
+
+m = {
+    "qwerty": [row.split("\t")[0] for row in table.split("\n")[1:]],
+    "dvorak": [row.split("\t")[1] for row in table.split("\n")[1:]],
+    "bjarki": [row.split("\t")[2] for row in table.split("\n")[1:]],
+}
+k, _, v = input().split()
+mapping = dict(zip(m[k], m[v]))
+
+s = input()
+print("".join(mapping.get(c, c) for c in s))

src/notamused.py

@@ -0,0 +1,22 @@
+from collections import Counter
+
+d = 1
+while True:
+    try:
+        s = input().split()
+
+        if "OPEN" in s:
+            book = {}
+            t = Counter()
+        elif "ENTER" in s:
+            book[s[1]] = int(s[2])
+        elif "EXIT" in s:
+            t[s[1]] += int(s[2]) - book.pop(s[1])
+        elif "CLOSE" in s:
+            print(f"Day {d}")
+            for k in sorted(t):
+                print(f"{k} ${t[k]/10:.2f}")
+            print()
+            d += 1
+    except:
+        break