题解

#include<bits/stdc++.h>
using namespace std;
int t,n,ans;
string s;
void AC()
{
	ans=0,s="";
	int x=9;
	while(n>x)
	{
		n-=x;
		s=char(x+48)+s;
		x--;
	}
	if(n) cout<<n;
	cout<<s;
	return;
}
int main()
{
	cin>>t;
	while(t--)
	{
		cin>>n;
		if(n<10)
		{
			cout<<n;
		}
		else if(n>45)
		{
			cout<<-1;
		}
		else
		{
			AC();
		} 
        cout<<endl;
	}
	return 0;
}