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 <iostream>
#include <string>
#include <queue>
using namespace std;
int main(void){
    queue<pair<string,int> > v;
    int N,Q,T;
    string s;
    for(cin>>N>>Q;N--;){
        cin>>s>>T;
        v.push(make_pair(s,T));
    }
    for(T=0;!v.empty();){
        pair<string,int> p=v.front();
        v.pop();
        if(p.second>Q){
            T+=Q;
            p.second-=Q;
            v.push(p);
        }else{
            T+=p.second;
            cout<<p.first<<" "<<T<<endl;
        }
    }
    return 0;
}