Submission #563338

#	Time	Username	Problem	Language	Result	Execution time	Memory
563338		ngpin04	Swap (BOI16_swap)	C++14	0 / 100	5 ms	9668 KiB

swap

#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define TASK ""
#define bit(x) (1LL << (x))
#define getbit(x, i) (((x) >> (i)) & 1)
#define ALL(x) (x).begin(), (x).end() 
using namespace std;
template <typename T1, typename T2> bool mini(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maxi(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}
mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());

int rand(int l, int r) {
	return l + rd() % (r - l + 1);
}
const int N = 2e5 + 5; 
const int oo = 1e9;
const long long ooo = 1e18;
const int mod = 1e9 + 7; // 998244353;
const long double pi = acos(-1);

set <int> s[N];

int root[N];
int pos[N];
int a[N];
int n;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	#ifdef ONLINE_JUDGE
	// freopen(TASK".inp","r",stdin);
	// freopen(TASK".out","w",stdout);
	#endif
	cin >> n;
	for (int i = 1; i <= n; i++) 
		cin >> a[i];
	
	for (int i = 1; i <= n; i++){
		root[i] = i;
		s[i].insert(i);
	}

	for (int i = 1; 2 * i <= n; i++) {
		int r = root[a[i]];

		a[i] = *s[r].begin();
		// cerr << i << " " << a[i] << "\n";
		if (2 * i + 1 > n) {
			if (a[i] > a[2 * i])
				swap(a[i], a[2 * i]);
			continue;
		}

		int mn = min({a[i], a[2 * i], a[2 * i + 1]});
		if (a[i] == mn) {
			// cerr << "ok\n";
			s[r].erase(a[i]);
		} else if (a[2 * i] == mn) {
			// cerr << "left \n"; 
			swap(a[i], a[2 * i]);
		} else {
			// cerr << "right \n";
			swap(a[i], a[2 * i + 1]);
			root[a[2 * i]] = r;
			s[r].insert(a[2 * i]);
		}
	}

	for (int i = 1; i <= n; i++) if (2 * i > n) {
		int r = root[a[i]];
		a[i] = *s[r].begin();
		s[r].erase(a[i]);
	}

	for (int i = 1; i <= n; i++)
		cout << a[i] << " ";
	return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 11
• Subtask 3: 0 / 27
• Subtask 4: 0 / 20
• Subtask 5: 0 / 32