n, x = map(int, input().split())
ans = [0] * x
d = [0] * x
for _ in range(n):
    a, b = map(int, input().split())
    a -= 1
    d[a] = max(d[a], b)
ans = [0] * x
for _ in range(2):
    now = 0
    for i in range(x):
        now = max(d[i], now)
        ans[i] = max(ans[i], now)
        now -= 1
    ans.reverse()
    d.reverse()
print(*ans)