#include <iostream>
#include <vector>
#include <string>
#include <sstream>
#include <set>

using namespace std;

int root[100];
int getRoot(int v){ return root[v]==-1 ? v : root[v] = getRoot(root[v]); }

class OneDimensionalBalls {
public:
	long long countValidGuesses(vector <int> firstPicture, vector <int> secondPicture) {
		set<int> S;
		int n = firstPicture.size();
		int m = secondPicture.size();
		long long res = 0;
		for(int i=0;i<n;i++){
			for(int j=0;j<m;j++) S.insert(abs(firstPicture[i]-secondPicture[j]));
		}
		for(set<int>::iterator it=S.begin();it!=S.end();it++){
			if((*it)==0) continue;
			memset(root, -1, sizeof(root));
			for(int i=0;i<n;i++){
				for(int j=0;j<m;j++){
					if(abs(firstPicture[i]-secondPicture[j]) == (*it)){
						int p = getRoot(i);
						int q = getRoot(j+n);
						if(p!=q)
							root[q] = p;
					}
				}
			}
			long long cnt = 1;
			bool ok = true;
			for(int i=0;i<n+m;i++){
				int a = 0, b = 0;
				for(int j=0;j<n;j++) if(getRoot(j)==i) a++;
				for(int j=0;j<m;j++) if(getRoot(j+n)==i) b++;
				if(a>0){
					if(a+1==b) cnt *= b;
					if(a>b)    cnt = 0;
				}
			}
			if(ok) res += cnt;
		}
		return res;
	}
};