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 CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
using P = pair<string, int>;

int main() {
  int n, q; cin >> n >> q;
  queue<P> que;
  for (int i = 0; i < n; ++i) {
    string name;
    int time;
    cin >> name >> time;
    que.push({name, time});
  }
  int sum = 0;
  while (!que.empty()) {
    P p = que.front(); que.pop();
    int t = p.second;
    if (t > q) {
      sum += q;
      que.push({p.first, t - q});
    } else {
      sum += t;
      cout << p.first << ' ' << sum << endl;
    }
  }
  return 0;
}