#include<iostream>
using namespace std;
int main()
{
    int num;
    cin>>num;
    if(num>0 && num<=50)
    {
        string s1[num];
        int arr[num],arr1[num],arr2[i];
        for(int i=0;i<num;i++)
        {
            cin>>s1[i]>>arr[i];
            if(arr[i]!=0)
            {
                arr1[i]=arr[i];
            }
            else
            {
                arr2[i]=arr[i];
            }
            
        }
        for(int i=0;i<num;i++)
        {
            cout<<s1[i]<<":"<<arr1[i]<<endl;   
            
        }
    }
}