Problem: Notes

Template in C

Constraints

* 1 ≤ n ≤ 100000
* 1 ≤ q ≤ 1000
* 1 ≤ timei ≤ 50000
* 1 ≤ length of namei ≤ 10
* 1 ≤ Sum of timei ≤ 1000000

Input

n q
name1 time1
name2 time2
...
namen timen


In the first line the number of processes n and the quantum q are given separated by a single space.

In the following n lines, names and times for the n processes are given. namei and timei are separated by a single space.

Output

For each process, prints its name and the time the process finished in order.

Example

Input

5 100
p1 150
p2 80
p3 200
p4 350
p5 20


Output

p2 180
p5 400
p1 450
p3 550
p4 800

Solution (in PYTHON3):

Solution:
n, q = map(int, input().split())
l = []
for i in range(n):
  t = []
  for j in input().split():
    t += [j]
  t[1] = int(t[1])
  l += [t]

c = 0
while len(l) > 0:
  if l[0][1] > q:
    l[0][1] -= q
    l += [l[0]]
    l.pop(0)
    c += q
  else:
    c += l[0][1]
    print(l[0][0], c)
    l.pop(0)