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#include <vector>
#include <iostream>

int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(NULL);
	
	int n, m;
	std::cin >> n >> m;
	
	std::vector<bool> bulbs(n + 1, false);
	for (int i = 1; i <= n; i++) {
		int bulb;
		std::cin >> bulb;
		if (bulb == 1) {
			bulbs[i] = true;
		}
	}
	std::vector<bool> switchableBulbs(n + 1, false);
	int count{1};
	for (int i = 0; i < m; i++) {
		int a;
		int b;
		std::cin >> a >> b;
		if (!(bulbs[a] ^ bulbs[b])) {
			switchableBulbs[a] = true;
			switchableBulbs[b] = true;
			count++;
		} else if (switchableBulbs[a]) {
			switchableBulbs[b] = true;
			count++;
		} else if (switchableBulbs[b]) {
			switchableBulbs[a] = true;
			count++;
		}
		count %= 1000000007;
	}
	std::cout << count << "\n";
	
	return 0;
}