#include<stdio.h>
#include<string.h>
int main()
{
	int t;
	scanf("%d", &t);
	int i, n;
	char s[1003];
	int a[1003];
	for (; t > 0; t--)
	{
		scanf("%s", s);
		n = strlen(s);
		for (i = 0; i < n; i++)
			a[i] = s[i] - '0';
		while (n > 1)
		{
			n--;
			for (i = 0; i < n; i++)
				a[i] = (a[i] + a[i + 1]) / 10 + (a[i] + a[i + 1]) % 10;
		}
		printf("%d\n", a[0]);
	}
	return 0;
}