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<queue>
#include<iostream>
#include<string>
using namespace std;
int main() {
	int n, q;
	cin >> n >> q;
	pair<string, int> proces;
	int time = 0;
	queue<pair<string, int> > Q;
	for (int i = 0; i < n; i++) {
		cin >> proces.first >> proces.second;
		Q.push(proces);
	}
	while (!Q.empty()) {
		pair<string, int> tmp = Q.front();
		Q.pop();
		if (tmp.second <= q) {
			time += tmp.second;
			cout << tmp.first << " " << time << endl;
		}
		else {
			tmp.second -= q;
			Q.push(tmp);
			time += q;
		}
	}
	cin >> n;
	return 0;
}