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- #include <iostream>
- #include <vector>
- #include <set>
- #include <algorithm>
- using namespace std;
- typedef long long ll;
- int main()
- {
- int n;
- ll M;
- cin >> n >> M;
- ll P[n];
- for(int i = 0; i < n; i++) {
- cin >> P[i];
- }
- sort(P, P + n);
- ll result = -5e18;
- do{
- ll ans = 0;
- if(P[0] == 0) {
- for(int i = 0; i < n - 1; i++) {
- ans += llabs(P[i] - P[i + 1]);
- }
- ans += llabs(P[n - 1] - P[0]);
- if(ans <= M) {
- result = max(result, ans);
- }
- }
- }while(next_permutation(P, P + n));
- cout << result << endl;
- return 0;
- }
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