Järjestys

input/code.cpp: In function 'int solve(std::vector<int>, int)':
input/code.cpp:12:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < i; ++j) {
                  ~~^~~

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
using ll = long long;
constexpr ll MOD = 1e9+7;
int solve(vector<int> v, int x) {
	ll ans = 1;
	sort(v.begin(), v.end());
	for(std::size_t i = 0; i < v.size(); ++i) {
		ll ok_places = 1;
		for(int j = 0; j < i; ++j) {
			if(v[i] - v[j] <= x) ++ok_places;
		}
		ans *= ok_places;
		ans %= MOD;
	}
	return ans;
}
int main() {
	int tt;
	cin >> tt;
	for(int xx = 0; xx < tt; ++xx) {
		int n, x;
		cin >> n >> x;
		vector<int> v;
		for(int i = 0; i < n; ++i) {
			int tmp;
			cin >> tmp;
			v.push_back(tmp);
		}
		cout << solve(v, x) << endl;
	}
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 2

Verdict: ACCEPTED