another day of coding

17/part1.py

@@ -0,0 +1,51 @@
+#!/usr/bin/python
+
+import re
+
+RE_INGRADIENT_INFO = re.compile(r'^(.*): capacity (-?\d+), durability (-?\d+), flavor (-?\d+), texture (-?\d+), calories (-?\d+)$')
+
+
+def read_file(filename):
+    file = open(filename, 'r')
+    while True:
+        line = file.readline()
+        if not line:
+            break
+        yield line
+
+
+def bottle_usage_positions(minCount, maxCount, pos, usage):
+    if pos == len(usage):
+        yield usage
+        return
+
+    for x in range(minCount, maxCount+1):
+        usage[pos] = x
+        for b in bottle_usage_positions(minCount, maxCount, pos+1, usage):
+            yield b
+    usage[pos] = minCount
+
+def calculate_liters(bottles, usage):
+    sum = 0
+    bottles_used = []
+    for x in range(len(bottles)):
+        sum += bottles[x] * usage[x]
+        bottles_used.append(bottles[x] * usage[x])
+    return (sum, bottles_used)
+
+
+def main():
+    input = 150
+    bottles = []
+    bottle_usage = []
+    for line in read_file('input'):
+        bottles.append(int(line))
+        bottle_usage.append(0)
+
+    for usage in bottle_usage_positions(0, 1, 0, bottle_usage):
+        (litres, used) = calculate_liters(bottles, usage)
+        if litres == input:
+            print used
+
+if __name__ == "__main__":
+    main()

17/part2.py

@@ -0,0 +1,51 @@
+#!/usr/bin/python
+
+import re
+
+RE_INGRADIENT_INFO = re.compile(r'^(.*): capacity (-?\d+), durability (-?\d+), flavor (-?\d+), texture (-?\d+), calories (-?\d+)$')
+
+
+def read_file(filename):
+    file = open(filename, 'r')
+    while True:
+        line = file.readline()
+        if not line:
+            break
+        yield line
+
+
+def bottle_usage_positions(minCount, maxCount, pos, usage):
+    if pos == len(usage):
+        yield usage
+        return
+
+    for x in range(minCount, maxCount+1):
+        usage[pos] = x
+        for b in bottle_usage_positions(minCount, maxCount, pos+1, usage):
+            yield b
+    usage[pos] = minCount
+
+def calculate_liters(bottles, usage):
+    sum = 0
+    bottles_used = 0
+    for x in range(len(bottles)):
+        sum += bottles[x] * usage[x]
+        bottles_used += usage[x]
+    return (sum, bottles_used)
+
+
+def main():
+    input = 150
+    bottles = []
+    bottle_usage = []
+    for line in read_file('input'):
+        bottles.append(int(line))
+        bottle_usage.append(0)
+
+    for usage in bottle_usage_positions(0, 1, 0, bottle_usage):
+        (litres, used) = calculate_liters(bottles, usage)
+        if litres == input:
+            print used
+
+if __name__ == "__main__":
+    main()

17/readme

@@ -0,0 +1,7 @@
+## part1
+
+    python part1.py | wc -l
+
+## part2
+
+    python part2.py  | sort | uniq -c

18/input

@@ -0,0 +1,100 @@
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18/input1

@@ -0,0 +1,6 @@
+.#.#.#
+...##.
+#....#
+..#...
+#.#..#
+####..

18/part1.py

@@ -0,0 +1,71 @@
+#!/usr/bin/python
+
+import re
+
+RE_INGRADIENT_INFO = re.compile(r'^(.*): capacity (-?\d+), durability (-?\d+), flavor (-?\d+), texture (-?\d+), calories (-?\d+)$')
+
+
+def read_file(filename):
+    file = open(filename, 'r')
+    while True:
+        line = file.readline()
+        if not line:
+            break
+        yield line
+
+
+def get_neighbors(lights, posX, posY, minX, minY, maxX, maxY):
+    lightsOn = 0
+    lightsOff = 0
+
+    for x in range(posX-1, posX+2):
+        if x < minX or x > maxX:
+            continue
+        for y in range(posY-1, posY+2):
+            if y < minY or y > maxY:
+                continue
+            if x == posX and y == posY:
+                continue
+            if lights[x][y] == '#':
+                lightsOn += 1
+            if lights[x][y] == '.':
+                lightsOff += 1
+    return (lightsOn, lightsOff)
+
+
+def do_one_step(lights, sizeX, sizeY):
+    result = []
+    for x in range(sizeX):
+        line = ""
+        for y in range(sizeY):
+            light = lights[x][y]
+            (on, off) = get_neighbors(lights, x, y, 0, 0, sizeX-1, sizeY-1)
+#            print "[%d, %d]: on:%d off: %d" % (x, y, on, off)
+            if lights[x][y] == '#':
+                if on != 2 and on != 3:
+                    light = '.'
+            if lights[x][y] == '.':
+                if on == 3:
+                    light = '#'
+            line = line + light
+        result.append(line)
+
+    return result
+
+
+def main():
+    lights = []
+    for line in read_file('input'):
+        lights.append(line.strip())
+
+    for i in range(100):
+        print "iteration: %d" % i
+        lights = do_one_step(lights, 100, 100)
+
+    on = 0
+    for line in lights:
+        on += line.count('#')
+    print on
+
+if __name__ == "__main__":
+    main()

18/part2.py

@@ -0,0 +1,78 @@
+#!/usr/bin/python
+
+import re
+
+RE_INGRADIENT_INFO = re.compile(r'^(.*): capacity (-?\d+), durability (-?\d+), flavor (-?\d+), texture (-?\d+), calories (-?\d+)$')
+
+
+def read_file(filename):
+    file = open(filename, 'r')
+    while True:
+        line = file.readline()
+        if not line:
+            break
+        yield line
+
+
+def get_neighbors(lights, posX, posY, minX, minY, maxX, maxY):
+    lightsOn = 0
+    lightsOff = 0
+
+    for x in range(posX-1, posX+2):
+        if x < minX or x > maxX:
+            continue
+        for y in range(posY-1, posY+2):
+            if y < minY or y > maxY:
+                continue
+            if x == posX and y == posY:
+                continue
+            if lights[x][y] == '#':
+                lightsOn += 1
+            if lights[x][y] == '.':
+                lightsOff += 1
+    return (lightsOn, lightsOff)
+
+
+def do_one_step(lights, sizeX, sizeY):
+    result = []
+    for x in range(sizeX):
+        line = ""
+        for y in range(sizeY):
+            light = lights[x][y]
+            (on, off) = get_neighbors(lights, x, y, 0, 0, sizeX-1, sizeY-1)
+#            print "[%d, %d]: on:%d off: %d" % (x, y, on, off)
+            if lights[x][y] == '#':
+                if on != 2 and on != 3:
+                    light = '.'
+            if lights[x][y] == '.':
+                if on == 3:
+                    light = '#'
+            if x == 0 and (y == 0 or y == sizeY-1):
+                light = '#'
+            if x == sizeX-1 and (y == 0 or y == sizeY-1):
+                light = '#'
+            line = line + light
+        result.append(line)
+
+    return result
+
+
+def main():
+    lights = []
+    for line in read_file('input'):
+        lights.append(line.strip())
+
+    lights[0] = "#" + lights[0][1:-1] + "#"
+    lights[99] = "#" + lights[99][1:-1] + "#"
+
+    for i in range(100):
+        print "iteration: %d" % i
+        lights = do_one_step(lights, 100, 100)
+
+    on = 0
+    for line in lights:
+        on += line.count('#')
+    print on
+
+if __name__ == "__main__":
+    main()

19/input

@@ -0,0 +1,45 @@
+Al => ThF
+Al => ThRnFAr
+B => BCa
+B => TiB
+B => TiRnFAr
+Ca => CaCa
+Ca => PB
+Ca => PRnFAr
+Ca => SiRnFYFAr
+Ca => SiRnMgAr
+Ca => SiTh
+F => CaF
+F => PMg
+F => SiAl
+H => CRnAlAr
+H => CRnFYFYFAr
+H => CRnFYMgAr
+H => CRnMgYFAr
+H => HCa
+H => NRnFYFAr
+H => NRnMgAr
+H => NTh
+H => OB
+H => ORnFAr
+Mg => BF
+Mg => TiMg
+N => CRnFAr
+N => HSi
+O => CRnFYFAr
+O => CRnMgAr
+O => HP
+O => NRnFAr
+O => OTi
+P => CaP
+P => PTi
+P => SiRnFAr
+Si => CaSi
+Th => ThCa
+Ti => BP
+Ti => TiTi
+e => HF
+e => NAl
+e => OMg
+
+ORnPBPMgArCaCaCaSiThCaCaSiThCaCaPBSiRnFArRnFArCaCaSiThCaCaSiThCaCaCaCaCaCaSiRnFYFArSiRnMgArCaSiRnPTiTiBFYPBFArSiRnCaSiRnTiRnFArSiAlArPTiBPTiRnCaSiAlArCaPTiTiBPMgYFArPTiRnFArSiRnCaCaFArRnCaFArCaSiRnSiRnMgArFYCaSiRnMgArCaCaSiThPRnFArPBCaSiRnMgArCaCaSiThCaSiRnTiMgArFArSiThSiThCaCaSiRnMgArCaCaSiRnFArTiBPTiRnCaSiAlArCaPTiRnFArPBPBCaCaSiThCaPBSiThPRnFArSiThCaSiThCaSiThCaPTiBSiRnFYFArCaCaPRnFArPBCaCaPBSiRnTiRnFArCaPRnFArSiRnCaCaCaSiThCaRnCaFArYCaSiRnFArBCaCaCaSiThFArPBFArCaSiRnFArRnCaCaCaFArSiRnFArTiRnPMgArF