#第一遍循环，每找到一个数字，将其索引和长度计入字典。第二遍循环字典，如果循环位置的长度等于最长长度，将其加到字符串sr中。
#优化思路，每找到一个数字，除了上述操作，还可以跳过从此处开始到（索引+长度）后的位置，避免记录无用的长度
while True:
    try:
        dic={}
        s=input()
        for i in range(len(s)):
            if s[i].isdigit():
                count=0
                for j in range(i,len(s)):
                    if s[j].isdigit():
                        count+=1
                    else:
                        break
                dic[i]=count
        sr=''      
        for i in range(len(dic)):
            if list(dic.values())[i]==max(list(dic.values())):
                    ls1=list(dic.keys())
                    ls2=list(dic.values())
                    n=i
                    for j in range(ls1[i],ls1[i]+ls2[i]):
                        sr+=s[j]
        print(sr+','+str(ls2[n]))                              

                
                
        
    except:
        break