题解 | #记负均正II#

'''
# 报错：EOF when reading a line end of file
# 尝试从文件/输入流读取数据时，遇到文件结束符（EOF），没有读取到任何数据。
cnt_neg=0
cnt_nonneg=0
sum_nonneg=0
n=input()
while n:
    n=int(n)
    if n<0:
        cnt_neg += 1
    else:
        cnt_nonneg += 1
        sum_nonneg += n
    n=input()    

if cnt_nonneg==0:
    print(cnt_neg,0.0)
else:
    print(cnt_neg,round(sum_nonneg/cnt_nonneg,1))
'''
# 可以利用报错，遇到报错时输出结果 try except
try:
    cnt_neg=0
    cnt_nonneg=0
    sum_nonneg=0
    n=input()
    while n:
        n=int(n)
        if n<0:
            cnt_neg += 1
        else:
            cnt_nonneg += 1
            sum_nonneg += n
        n=input()    
except:
    print(cnt_neg)
    if cnt_nonneg==0:
        print('%.1f'%(0))
    else:
        print('%.1f'%(sum_nonneg/cnt_nonneg))