题解 | 小红的不动点
小红的不动点
https://www.nowcoder.com/practice/ca080ccef283479cb89286c6182fe6bc
hashd = dict() ans=0 n = int(input()) nums = list(map(int,input().split(" "))) for num in nums: if num in hashd: hashd[num]+=1 elif num not in hashd: hashd[num] = 1 for i in hashd: if i == hashd[i]: ans+=i print(ans)