N = int(input())
k = int(input())
f = []

for i in range(N):
    f.append([])
    f[i].append(int(input()))
    f[i].append(int(input()))
print(f)

for i in range(k * 2):
    d = int((i + 1) // 2)
    b = f.index(max(f))
    c = f[b].index(max(f[b]))
    f[b][c] == d
print(f)

for i in range(N):
    if len(f[i] == 1):
        print()