line = input()
arr = list(map(str,line.split(",")))
res = []
dic = {}
for i,val in enumerate(arr):
    if val not in res:
        res.append(val)
        dic[val] = 1
    else:
        dic[val] +=1
        tmp = val+"_"+str(dic[val]-2)
        res.append(tmp)
           
print(res)