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:
from collections import deque

n, q = [ int(i) for i in input().split(" ") ]

ps = deque()
for i in range(n):
  p = [ i for i in input().split(" ") ]
  ps.append([p[0], int(p[1])])

time = 0
while len(ps) > 0:
  p = ps.popleft()

  tmp = p[1] - q
  if tmp > 0:
    ps.append([p[0], tmp])
    time +=  q
  else:
    time += p[1]
    print(p[0], str(time))