#include<stdio.h>
#include<conio.h>
int main()
{
	int i, n, x, s, dem;
	printf("n= "); scanf_s("%d", &n);
	i = n;
	dem = s = 0;
	while (i >= 10) {
		s++;
		x = i % 10;
		i = i / 10;
		if (i % 10 < x) {
			dem++;
		}
	}
	if (dem == s) {
		printf("tang");
	}
	else if (dem == 0) {
		printf("giam");
	}
	else {
		printf("k tang k giam");
	}
}