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 = [int(x) for x in input().split()]
pro = [[0, 0]]* n
for i in range(n):
    pro[i] = [str(x) for x in input().split()]

cnt = 0
while bool(pro):
    a = pro.pop(0)
    if int(a[1]) - q <= 0:
        cnt += int(a[1])
        print('{} {}'.format(a[0], cnt))
    else:
        cnt += q
        a[1] = str(int(a[1]) - q)
        pro.append(a)