UVa 10903 - Rock - Paper - Scissors ... (count win+ losses , output win average)

Link:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1844
Sol:

import sys
	tc = 0
	while True:
	line = sys.stdin.readline().strip()
	data = line.split()
	n = int(data[0])
	if n == 0:
	break;
	if tc != 0:
	print()
	tc += 1
	pwon = [0] * (n+1)
	plost = [0] * (n+1)
	k = int(data[1])
	g = k * ((n * (n - 1)) // 2)
	for i in range(g):
	line = sys.stdin.readline().strip()
	data = line.split()
	p1 = int(data[0])
	m1 = data[1]
	p2 = int(data[2])
	m2 = data[3]
	if m1 != m2:
	if m1 == "rock":
	if m2 == "scissors":
	pwon[p1] += 1
	plost[p2] += 1
	else:
	plost[p1] += 1
	pwon[p2] += 1
	if m1 == "scissors":
	if m2 == "paper":
	pwon[p1] += 1
	plost[p2] += 1
	else:
	plost[p1] += 1
	pwon[p2] += 1
	if m1 == "paper":
	if m2 == "rock":
	pwon[p1] += 1
	plost[p2] += 1
	else:
	plost[p1] += 1
	pwon[p2] += 1
	pwon.pop(0)
	plost.pop(0)
	for w, l in zip(pwon, plost):
	if (w+l) != 0:
	score = w / (w + l)
	print("{:.3f}".format(score))
	else:
	print("-")