哈囉大家好，這裡是快被自己給掐死的小編過路君子

#include<iostream>
#define UNI 5

using namespace std;

int even(int x[UNI])
{
	int a=0, c=0;
	
	for(int b=0;4>b;b++)
	{
		a = x[b]/1000;
		a *= 2;
		if(a>=10) c += ((a%10) + (a/10));
		else c += a;
		
		a = (x[b]%100)/10;
		a *= 2;
		if(a>=10) c += ((a%10) + (a/10));
		else c += a; 
	}
	
	return c;
}

int odd(int x[UNI])
{
	int a=0;
	
	for(int b=0;4>b;b++) a += ((x[b]%1000)/100);
	for(int b=0;4>b;b++) a += (x[b]%10);
	
	return a;
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	int a[UNI], d, v;
	
	cin >> v;
	
	while(cin >> a[0] >> a[1] >> a[2] >> a[3])
	{	
		d = even(a);
		d += odd(a);
		if(d%10==0) cout << "Valid\n";
		else cout << "Invalid\n";
	}
	
	return 0;
}