Buggy python submission (verdict: Runtime Error):
n,k=MI()
lis=LI()
cou=Counter(lis)
u=cou.most_common()
#print(u)
ans=0
for i in range(len(u)-k):
    j=len(u)-i-1
    #print(j)
    ans+=u[j][1]
    #print(cou.most_common()[j][1])
print(ans)

Fixed submission:
# coding: utf-8
# hello worldと表示する
#dpでできないかな？
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**7)
from collections import Counter, deque
from collections import defaultdict
from itertools import combinations, permutations, accumulate, groupby, product
from bisect import bisect_left,bisect_right
from heapq import heapify, heappop, heappush
from math import floor, ceil,pi
from operator import itemgetter
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))
def LI2(): return [int(input()) for i in range(n)]
def MXI(): return [[LI()]for i in range(n)]
def SI(): return input().rstrip()
def printns(x): print('\n'.join(x))
def printni(x): print('\n'.join(list(map(str,x))))
inf = 10**17
mod = 10**9 + 7

n,k=MI()
lis=LI()
cou=Counter(lis)
u=cou.most_common()
#print(u)
ans=0
for i in range(len(u)-k):
    j=len(u)-i-1
    #print(j)
    ans+=u[j][1]
    #print(cou.most_common()[j][1])
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
# coding: utf-8
# hello worldと表示する
#dpでできないかな？
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**7)
from collections import Counter, deque
from collections import defaultdict
from itertools import combinations, permutations, accumulate, groupby, product
from bisect import bisect_left,bisect_right
from heapq import heapify, heappop, heappush
from math import floor, ceil,pi
from operator import itemgetter
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))
def LI2(): return [int(input()) for i in range(n)]
def MXI(): return [[LI()]for i in range(n)]
def SI(): return input().rstrip()
def printns(x): print('\n'.join(x))
def printni(x): print('\n'.join(list(map(str,x))))
inf = 10**17
mod = 10**9 + 7

n,k=MI()
lis=LI()
cou=Counter(lis)
u=cou.most_common()
#print(u)
ans=0
for i in range(len(u)-k):
    j=len(u)-i-1
    #print(j)
    ans+=cou.most_common()[j][1]
    #print(cou.most_common()[j][1])
print(ans)


Fixed submission:
# coding: utf-8
# hello worldと表示する
#dpでできないかな？
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**7)
from collections import Counter, deque
from collections import defaultdict
from itertools import combinations, permutations, accumulate, groupby, product
from bisect import bisect_left,bisect_right
from heapq import heapify, heappop, heappush
from math import floor, ceil,pi
from operator import itemgetter
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))
def LI2(): return [int(input()) for i in range(n)]
def MXI(): return [[LI()]for i in range(n)]
def SI(): return input().rstrip()
def printns(x): print('\n'.join(x))
def printni(x): print('\n'.join(list(map(str,x))))
inf = 10**17
mod = 10**9 + 7

n,k=MI()
lis=LI()
cou=Counter(lis)
u=cou.most_common()
#print(u)
ans=0
for i in range(len(u)-k):
    j=len(u)-i-1
    #print(j)
    ans+=u[j][1]
    #print(cou.most_common()[j][1])
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
# coding: utf-8
# hello worldと表示する
#dpでできないかな？
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**7)
from collections import Counter, deque
from collections import defaultdict
from itertools import combinations, permutations, accumulate, groupby, product
from bisect import bisect_left,bisect_right
from heapq import heapify, heappop, heappush
from math import floor, ceil,pi
from operator import itemgetter
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))
def LI2(): return [int(input()) for i in range(n)]
def MXI(): return [[LI()]for i in range(n)]
def SI(): return input().rstrip()
def printns(x): print('\n'.join(x))
def printni(x): print('\n'.join(list(map(str,x))))
inf = 10**17
mod = 10**9 + 7

n,k=MI()
lis=LI()
cou=Counter(lis)
u=cou.most_common()
#print(u)
ans=0
for i in range(len(u)-k):
    j=len(u)-i-1
    #print(j)
    ans+=cou.most_common()[j][1]
    #print(cou.most_common()[j][1])
print(ans)


Fixed submission:
# coding: utf-8
# hello worldと表示する
#dpでできないかな？
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**7)
from collections import Counter, deque
from collections import defaultdict
from itertools import combinations, permutations, accumulate, groupby, product
from bisect import bisect_left,bisect_right
from heapq import heapify, heappop, heappush
from math import floor, ceil,pi
from operator import itemgetter
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))
def LI2(): return [int(input()) for i in range(n)]
def MXI(): return [[LI()]for i in range(n)]
def SI(): return input().rstrip()
def printns(x): print('\n'.join(x))
def printni(x): print('\n'.join(list(map(str,x))))
inf = 10**17
mod = 10**9 + 7

n,k=MI()
lis=LI()
cou=Counter(lis)
u=cou.most_common()
#print(u)
ans=0
for i in range(len(u)-k):
    j=len(u)-i-1
    #print(j)
    ans+=u[j][1]
    #print(cou.most_common()[j][1])
print(ans)