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=map(int,input().split())
queue=deque([])
for _ in range(n):
  n,t=input().split()
  t=int(t)
  queue.append([n,t])
now=0
while queue:
  if queue[0][1]<=q:
    now+=queue[0][1]
    name=queue[0][0]
    queue.popleft()
    print(name,now)
  else:
    now+=q
    n,t=queue.popleft()
    t-=q
    queue.append([n,t])