three first day on first tries!

d01/part1.py

@@ -0,0 +1,6 @@
+import sys
+
+s = sys.stdin.read()[:-1]
+
+print(sum(map(lambda c: [-1,1][c=='('],s)))
+

d01/part2.py

@@ -0,0 +1,10 @@
+import sys
+
+s = sys.stdin.read()[:-1]
+
+f = 0
+for i,c in enumerate(s):
+    f += -1 if c == ')' else 1
+    if f == -1:
+        print(i+1)
+        break

d02/part1.py

@@ -0,0 +1,17 @@
+import sys
+
+def processline(l):
+    # a x b x c
+    (a,b,c) = tuple(map(int,l.split('x')))
+    print(l, a,b,c)
+    s1 = a * b
+    s2 = a * c
+    s3 = b * c
+    slack = min(s1,s2,s3)
+    return 2*(s1+s2+s3)+slack
+
+R = 0
+for l in sys.stdin.readlines():
+    n = processline(l[:-1])
+    R += n
+print(R)

d02/part2.py

@@ -0,0 +1,16 @@
+import sys
+
+def processline(l):
+    # a x b x c
+    (a,b,c) = tuple(map(int,l.split('x')))
+    print(l, a,b,c)
+    A = sorted([a,b,c])
+    s1 = A[0]
+    s2 = A[1]
+    return 2*(s1+s2)+a*b*c
+
+R = 0
+for l in sys.stdin.readlines():
+    n = processline(l[:-1])
+    R += n
+print(R)

d03/part1.py

@@ -0,0 +1,22 @@
+import sys
+
+s = sys.stdin.read()[:-1]
+
+cp = (0,0)
+P = {cp}
+
+dep = {
+    '<':(1,0),
+    '>':(-1,0),
+    'v':(0,1),
+    '^':(0,-1),
+  }
+
+for c in s:
+    x,y = cp
+    dx,dy = dep[c]
+    cp = (x+dx,y+dy)
+    P.add(cp)
+
+print(len(P))
+

d03/part2.py

@@ -0,0 +1,28 @@
+import sys
+
+s = sys.stdin.read()[:-1]
+
+cpS = (0,0)
+cpR = (0,0)
+P = {cpS}
+
+dep = {
+    '<':(1,0),
+    '>':(-1,0),
+    'v':(0,1),
+    '^':(0,-1),
+  }
+
+for i,c in enumerate(s):
+    dx,dy = dep[c]
+    if i%2:
+        x,y = cpS
+        cpS = (x+dx,y+dy)
+        P.add(cpS)
+    else:
+        x,y = cpR
+        cpR = (x+dx,y+dy)
+        P.add(cpR)
+
+print(len(P))
+