Submission #195587

#	Time	Username	Problem	Language	Result	Execution time	Memory
195587		dolphingarlic	Sirni (COCI17_sirni)	C++14	140 / 140	4409 ms	711108 KiB

sirni

#include <bits/stdc++.h>
using namespace std;

int a[100001];
vector<pair<int, int>> edges[10000001];

int cmp[100001];
int find(int A) {
	while (A != cmp[A]) cmp[A] = cmp[cmp[A]], A = cmp[A];
	return A;
}
void onion(int A, int B) {
	cmp[find(A)] = cmp[find(B)];
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	set<int> s;
	for (int i = 0; i < n; i++) {
		int x;
		cin >> x;
		s.insert(x);
	}
	n = 0;
	for (int i : s) a[n++] = i;

	for (int i = 0; i < n; i++) {
		if (i != n - 1) edges[a[i + 1] % a[i]].push_back({i, i + 1});
		int lb = i + 1;
		for (int j = 2 * a[i]; j <= a[n - 1]; j += a[i]) {
			while (a[lb] < j) lb++;
			edges[a[lb] % a[i]].push_back({i, lb});
		}
	}
	
	for (int i = 0; i < n; i++) cmp[i] = i;
	long long ans = 0;
	for (int i = 0; i < a[n - 1]; i++) {
		for (pair<int, int> j : edges[i]) {
			if (find(j.first) != find(j.second)) {
				ans += i;
				onion(j.first, j.second);
			}
		}
	}
	cout << ans;
	return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14