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()]
q = deque()
for _ in range(N):
    p = input().split()
    q.append((p[0], int(p[1])))

current_time = 0
while len(q) > 0:
    p = q.popleft()
    if p[1] > Q:
        current_time += Q
        q.append((p[0], int(p[1])-Q))
    else:
        current_time += p[1]
        print(p[0], current_time)