#include <iostream>
int main() {
	int N; int cnt = 0;
	int b[2][12];
	int sub[2], add[2], tmp[200];
	for (int i = 0; i < 2; i++)
		for (int j = 0; j < 10; j++)
			std::cin >> b[i][j];


	for (int i = 0; i < 10; i++) {
		if (sub[0] == b[0][i]) continue;
		sub[0] = b[1][10] = b[0][i];
		for (int j = 0; j < 11; j++) {
			if (add[0] == b[1][j]) continue;
			add[0] = b[0][10] = b[1][j];
			for (int k = 0; k < 11; k++) {
				if (sub[1] == b[0][k] || i == k) continue;
				sub[1] = b[1][11] = b[0][k];
				for (int h = 0; h < 12; h++) {
					if (add[1] == b[1][h] || j == h) continue;
					add[1] = b[1][h];
					int idx = add[0] + add[1] - sub[0] - sub[1];
					if (tmp[idx] != 1) {
						tmp[idx] = 1; cnt++;
					}
				}
			}
		}
	}

	printf("%d", cnt);

}