#include<bits/stdc++.h>
using namespace std;
const int r = 3, c = 4;
int mapp[10][10];
int numv[15];
int cou;
int dir[4][2] = { 0, -1, -1, -1, -1, 0, -1, 1 };
bool check(int x, int y, int n) {
for (int i = 0; i < 4; i++) {
int nx = x + dir[i][0];
int ny = y + dir[i][1];
if (nx >= 0 && nx < r && ny >= 0 && ny < c) {
if (mapp[nx][ny] == n - 1 || mapp[nx][ny] == n + 1) {
return false;
}
}
}
return true;
}
void dfs(int dep, int pos) {
if (dep == 2 && pos == 3) {
cou++;
#if 0
for (int i = 0; i < r; i++) {
for (int j = 0; j < c; j++) {
printf("%4d", mapp[i][j]);
}
puts("");
}
puts("");
system("pause");
#endif
return;
}
if (pos >= c) {
dfs(dep + 1, 0);
}
else {
for (int i = 0; i <= 9; i++) {
if (!numv[i] && check(dep, pos, i)) {
numv[i] = true;
mapp[dep][pos] = i;
dfs(dep, pos + 1);
mapp[dep][pos] = -10;
numv[i] = false;
}
}
}
}
int main()
{
for (int i = 0; i <= 5; i++) {
for (int j = 0; j <= 5; j++) {
mapp[i][j] = -10;
}
}
memset(numv, false, sizeof(numv));
cou = 0;
dfs(0, 1);
cout << cou << endl;
system("pause");
return 0;
}