#include <cstdio>
#include <vector>
#include <set>
struct Point {
int x;
int y;
};
int main() {
int N;
int M;
scanf(" %d %d", &N, &M);
std::vector<int> bundle_of_points;
for (int i = 0; i < M; ++i) {
int point;
scanf("%d", &point);
bundle_of_points.push_back(point);
}
std::vector<Point> bundle_of_PP;
for (size_t i = 0; i < bundle_of_points.size(); ++i) {
for (size_t j = i; j < bundle_of_points.size(); ++j) {
Point p;
p.x = bundle_of_points[i];
p.y = bundle_of_points[j];
bundle_of_PP.push_back(p);
}
}
std::set<long double> set_d;
if (N == 2) {
for (size_t i = 0; i < bundle_of_PP.size(); ++i) {
long double x = bundle_of_PP[i].y / (long double) bundle_of_PP[i].x;
set_d.insert(x);
}
printf("%u", set_d.size() % 1000000007);
}
else {
printf("i don'w knwo");
}
}
