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;

typedef long long ll;
int main(){
  int n, q, t;
  string name;
  queue<pair<string, int>> Q;
  cin >> n >> q;
  for(int i=0;i<n;i++){
    cin >> name >> t;
    Q.push(make_pair(name,t));
  }
  pair<string, int> u;
  int elaps = 0, a;
  while(! Q.empty()){
    u = Q.front(); Q.pop();
    a = min(u.second, q);
    u.second -= a;
    elaps += a;
    if(u.second >0)
      Q.push(u);
    else
      cout<<u.first << " " <<elaps <<endl;
  }
}