oj.uz

Submission #599277

# Submission time Handle Problem Language Result Execution time Memory
599277 2022-07-19T12:19:51 Z Temmie Sorting (IOI15_sorting) C++17
100 / 100
 220 ms 19212 KB 
#include <bits/stdc++.h>

int findSwapPairs(int n, int s[], int m, int u[], int v[], int uu[], int vv[]) {
	std::vector <int> a(s, s + n);
	std::vector <int> o(s, s + n);
	int l = 0, r = m;
	std::vector <std::pair <int, int>> last;
	while (l < r) {
		int mid = (l + r) >> 1;
		a = o;
		std::vector <bool> vis(n, false);
		std::vector <std::pair <int, int>> now;
		for (int i = 0; i < mid; i++) {
			std::swap(a[u[i]], a[v[i]]);
		}
		auto f = [&] (auto&& self, int ind, int root) -> void {
			vis[ind] = true;
			now.emplace_back(ind, a[ind]);
			if (a[ind] != root) {
				self(self, a[ind], root);
			}
		};
		for (int i = 0; i < n; i++) {
			if (!vis[i] && a[i] != i) {
				f(f, a[i], i);
			}
		}
		if ((int) now.size() > mid) {
			l = mid + 1;
		} else {
			r = mid;
		}
	}
	a = o;
	std::vector <bool> vis(n, false);
	auto f = [&] (auto&& self, int ind, int root) -> void {
		vis[ind] = true;
		last.emplace_back(ind, a[ind]);
		if (a[ind] != root) {
			self(self, a[ind], root);
		}
	};
	for (int i = 0; i < l; i++) {
		std::swap(a[u[i]], a[v[i]]);
	}
	for (int i = 0; i < n; i++) {
		if (!vis[i] && a[i] != i) {
			f(f, a[i], i);
		}
	}
	a = o;
	std::vector <int> inv(n);
	for (int i  = 0; i < n; i++) {
		inv[a[i]] = i;
	}
	for (int i = 0; i < l; i++) {
		std::swap(a[u[i]], a[v[i]]);
		std::swap(inv[a[u[i]]], inv[a[v[i]]]);
		if (i < (int) last.size()) {
			uu[i] = inv[last[i].first];
			vv[i] = inv[last[i].second];
			std::swap(a[uu[i]], a[vv[i]]);
			std::swap(inv[a[uu[i]]], inv[a[vv[i]]]);
		} else {
			uu[i] = vv[i] = 0;
		}
	}
	return l;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 312 KB Output is correct
6 Correct 0 ms 304 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 312 KB Output is correct
18 Correct 0 ms 304 KB Output is correct
19 Correct 1 ms 352 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Correct 2 ms 468 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 2 ms 440 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 1 ms 444 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 368 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 2 ms 508 KB Output is correct
9 Correct 2 ms 440 KB Output is correct
10 Correct 2 ms 444 KB Output is correct
11 Correct 2 ms 368 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 2 ms 496 KB Output is correct
14 Correct 1 ms 436 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 1 ms 444 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 368 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 2 ms 508 KB Output is correct
9 Correct 2 ms 440 KB Output is correct
10 Correct 2 ms 444 KB Output is correct
11 Correct 2 ms 368 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 2 ms 496 KB Output is correct
14 Correct 1 ms 436 KB Output is correct
15 Correct 167 ms 16876 KB Output is correct
16 Correct 186 ms 17360 KB Output is correct
17 Correct 197 ms 18384 KB Output is correct
18 Correct 70 ms 14516 KB Output is correct
19 Correct 139 ms 15400 KB Output is correct
20 Correct 147 ms 14696 KB Output is correct
21 Correct 154 ms 15728 KB Output is correct
22 Correct 163 ms 15804 KB Output is correct
23 Correct 220 ms 18768 KB Output is correct
24 Correct 210 ms 18564 KB Output is correct
25 Correct 211 ms 18264 KB Output is correct
26 Correct 145 ms 12752 KB Output is correct
27 Correct 136 ms 12312 KB Output is correct
28 Correct 193 ms 17876 KB Output is correct
29 Correct 200 ms 14456 KB Output is correct
30 Correct 107 ms 11940 KB Output is correct
31 Correct 186 ms 14792 KB Output is correct
32 Correct 192 ms 18312 KB Output is correct
33 Correct 214 ms 18584 KB Output is correct
34 Correct 212 ms 15160 KB Output is correct
35 Correct 138 ms 14792 KB Output is correct
36 Correct 49 ms 10676 KB Output is correct
37 Correct 213 ms 19212 KB Output is correct
38 Correct 193 ms 18552 KB Output is correct
39 Correct 194 ms 18540 KB Output is correct