Author | Sean |

Submission date | 2016-02-10 16:46:40.890442 |

Rating | 7170 |

Matches played | 325 |

Win rate | 72.62 |

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

```
import random
if input == "":
R, P, S = 0, 1, 2
index = {"R": R, "P": P, "S": S}
beat = ("P", "S", "R")
counts = [[1 for _ in xrange(3)] for _ in xrange(9)]
m = random.randrange(0, 3)
k = None
else:
i = index[input]
j = index[output]
if k is not None:
counts[k][i] += 2
k = 3 * i + j
ns = counts[k]
t = sum(ns)
r = random.randint(0, t)
p = 0
for m, n in enumerate(ns):
p += n
if r <= p:
break
output = beat[m]
```