没有输入信息么?
n = int(input()) lst = list(map(int, input().split())) d = {} for x in range(0,n): if not lst[x] in d: d[lst[x]] = 1 else: d[lst[x]] =d[lst[x]]+ 1 for k in sorted(d.keys()): print(k,end=':') print(d[k])