# MRI Scanner V6

 Author _RV_ Submission date 2011-05-25 17:44:26.864483 Rating 6352 Matches played 7305 Win rate 53.29

Use rpsrunner.py to play unranked matches on your computer.

## Source code:

``````import math,random
memory=6
if (input=='R' and output=='P') or (input=='P' and output=='S') or (input=='S' and output=='R'):
try:
wcount+=1
except NameError:
wcount=0
else:
try:
lcount+=1
except NameError:
lcount=0
try:
count+=2
except NameError:
count=0
try:
hist+=input
except NameError:
hist=""
hist+=input
try:
prev['ABCDE']=0
except NameError:
prev=dict()
l=len(hist)
if l>=memory+2:
word=[]
for i in range(-memory-2,-2):
word.append(str(hist[l+i]))
t1=word
t2=t1
t3=t1
for a in range(len(word)):
if word[a]==t1:
word[a]='A'
elif word[a]==t2:
word[a]='B'
elif word[a]==t3:
word[a]='C'
elif t2==t1:
t2=word[a]
word[a]='B'
else:
word[a]='C'
word=''.join(word)
let=str(hist[l-1])
if let==t1:
let='A'
elif let==t2:
let='B'
else:
let='C'
if not word in prev:
prev[word]=dict()
if let in prev[word]:
prev[word][let]+=1
else:
prev[word][let]=1
if count<100:
output = random.choice(["R","P","S"])
else:
guess=[]
for i in range(-memory,0):
guess.append(str(hist[l+i]))
t1=guess
t2=t1
t3=t1
for a in range(len(guess)):
if guess[a]==t1:
guess[a]='A'
elif guess[a]==t2:
guess[a]='B'
elif guess[a]==t3:
guess[a]='C'
elif t2==t1:
t2=guess[a]
guess[a]='B'
else:
guess[a]='C'
guess=''.join(guess)
if guess in prev:
abc=prev[guess]
predict=max(prev[guess], key = lambda x: prev[guess].get(x) )
if predict=='A':
predict=t1
elif predict=='B':
predict=t2
else:
predict=t3
output={'R':'P', 'P':'S', 'S':'R'}[predict]
else:
output=random.choice(["R","P","S"])
hist+=output``````