import sys
input = sys.stdin.readline

N,M=map(int,input().split())

P=[list(map(int,input().split())) for i in range(N)]

ANS=[0]*N
TWO=0
THREE=0

LIST=[[] for i in range(10**5+2)]
LIST2=[[] for i in range(10**5+2)]

for i in range(N):
    ANS[i]=P[i][0]

    LIST[P[i][1]].append(i)
    LIST2[P[i][2]].append(i)

for i in range(N):
    if ANS[i]>=2:
        TWO+=1
    if ANS[i]>=3:
        THREE+=1

LANS=10**6

if TWO>=M:
    LANS=THREE

SA=-1
SB=100001

for i in range(N):
    ANS[i]+=1

    if ANS[i]==2:
        TWO+=1
    if ANS[i]==3:
        THREE+=1
if TWO>=M:
    LANS=min(LANS,THREE)

for SA in range(10**5+2):
    for x in LIST[SA]:
        ANS[x]-=1
        if ANS[x]==2:
            THREE-=1
        if ANS[x]==1:
            TWO-=1

    while TWO<M and SB>0:
        SB-=1
        for x in LIST2[SB]:
            ANS[x]+=1

            if ANS[x]==2:
                TWO+=1
            if ANS[x]==3:
                THREE+=1

    if TWO>=M:
        LANS=min(LANS,THREE)
        


print(LANS)