Submission #886767

#	Time	Username	Problem	Language	Result	Execution time	Memory
886767		OAleksa	Untitled (POI11_rot)	C++14	36 / 100	1076 ms	36300 KiB

Main

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
 
#define f first
#define s second
#define int long long
const int N = 2e5 + 69;
int n, t = 1, ans;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
ordered_set;
ordered_set st[N];
int napravi() {
	int x;
	cin >> x;
	if (x == 0) {
		int l = napravi();
		int r = napravi();
		if (st[l].size() < st[r].size()) {
			st[l].swap(st[r]);
			swap(l, r);
		}
		int k1 = 0, k2 = 0;
		for (auto u : st[r]) {
			int x = st[l].order_of_key(u + 1);
			k1 += (int)st[l].size() - x;
		}
		//b a
		for (auto u : st[r]) {
			int x = st[l].order_of_key(u + 1);
			k2 += x;
		}
		for (auto u : st[r])
			st[l].insert(u);
		st[r].clear();
		ans += min(k1, k2);
		return l;
	}
	else {
		st[x].insert(x);
		return x;
	}
}
 
signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	//freopen("snowcow.in", "r", stdin);
	//freopen("snowcow.out", "w", stdout);
  int tt = 1;
	//cin >> tt;
  while (tt--) {
  	cin >> n;
  	napravi();
  	cout << ans;
	}
	return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 9
• Subtask 8: 0 / 9
• Subtask 9: 0 / 9
• Subtask 10: 0 / 9
• Subtask 11: 0 / 10