#include <stdio.h>

long long unsigned int power(long long unsigned int, long long unsigned int);
long long unsigned int frac(long long unsigned int);
long long unsigned int choice(long long unsigned int, long long unsigned int);

int main(void) {
	int p;
	scanf("%d", &p);
	long long unsigned int ans = (power(10, p) - 1) / 3; // 3の倍数の個数
	int i;
	for(i = 1; i <= p - 1; i++) {
		ans += choice(p, i) * power(9, p - i - 1) * 6; // 3をi個含む3の倍数でない数の個数
	}
	printf("%lld\n", ans);
	return 0;
}

long long unsigned int power(long long unsigned int a, long long unsigned int b) {
	if(b == 0) { return 1; }
	return a * power(a, b - 1);
}

long long unsigned int frac(long long unsigned int n) {
	if(n == 0) { return 1; }
	return n * frac(n - 1);
}

long long unsigned int choice(long long unsigned int n, long long unsigned int r) {
	return frac(n) / frac(n - r) / frac(r);
}

/*
 012X456789
0X  *  X  X
1  X* X  X 
2 X *X  X  
3**********
4  X* X  X 
5 X *X  X  
6X  *  X  X
7  X* X  X 
8 X *X  X  
9X  *  X  X
値によらず、和が3の倍数にならないのは6個
*/