测试点1可以过。试了测试点2，本地无误但提交却错误

到底什么问题，求助

python代码：

st=""
while True:
	s=input()
	if "E" in s:
		s=s[:s.find("E")]
		st+=s
		break
	st+=s
n,i,w11,l11,w21,l21,rez11,rez21=len(st),0,0,0,0,0,"",""
while i<n:
	if st[i]=="W":
		w11+=1
		w21+=1
	else:
		l11+=1
		l21+=1
	if (w11>=11 or l11>=11) and abs(w11-l11)>=2:
		rez11+=str(w11)+":"+str(l11)+"\n"
		w11,l11=0,0
	if (w21>=21 or l21>=21) and abs(w21-l21)>=2:
		rez21+=str(w21)+":"+str(l21)+"\n"
		w21,l21=0,0
	if i==n-1:
		rez11+=str(w11)+":"+str(l11)+"\n"
		rez21+=str(w21)+":"+str(l21)+"\n"
	i+=1
else:
	if i==0:rez11,rez21="0:0\n","0:0\n"
print(rez11)
print(rez21,end="")