oj.uz

Submission #372267

# Submission time Handle Problem Language Result Execution time Memory
372267 2021-02-27T12:32:57 Z 8e7 Swap (BOI16_swap) C++14
68 / 100
 1000 ms 158768 KB 
//Challenge: Accepted
#include <iostream>
#include <algorithm>
#include <utility>
#include <vector>
#include <unordered_map>
#define ll long long
#define maxn 200005
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
using namespace std;
int a[maxn], n;
vector<int> ord;
void getorder(int cur) {
	if (cur * 2 + 1 <= n) getorder(cur * 2 + 1);
	if (cur * 2 <= n) getorder(cur * 2);
	//cout << cur << endl;
	ord.push_back(cur);
}

void merge(vector<int> &v1, vector<int> &v2, vector<int> & ret) {
	for (int i = 0;(1<<(i + 1)) - 1 <= v2.size();i++) {
		for (int j = (1<<i);j < (1<<(i + 1));j++) ret.push_back(v1[j - 1]);
		for (int j = (1<<i);j < (1<<(i + 1));j++) ret.push_back(v2[j - 1]);
		if ((1<<(i + 2)) - 1 > v2.size()) {
			for (int j = (1<<(i + 1)) - 1;j < v1.size();j++) ret.push_back(v1[j]);
			for (int j = (1<<(i + 1)) - 1;j < v2.size();j++) ret.push_back(v2[j]);
			return;
		}
	}
}
vector<int> ind[maxn];
vector< vector<int> > ans[maxn];
inline int search(int v, int x) {
	for (int i = 0;i < ind[v].size();i++) {
		if (ind[v][i] == x) return i;
	}
	//cout << "not found" << endl;
	return -1;
}

void solve(int v, int x, vector<int> &ret) {
	ret.push_back(x);
	bool lef = 2 * v <= n, rig = 2 * v + 1 <= n;
	if (lef && !rig) {
		ret.push_back(a[2 * v]);
		if (a[2 * v] < x) swap(ret[0], ret[1]);
	} else if (lef && rig) {
		int l = a[2 * v], r = a[2 * v + 1], lind = v * 2, rind = v * 2 + 1;
		if (x < l && x < r) {
			merge(ans[lind][search(lind, l)], ans[rind][search(rind, r)], ret);
		} else if (l < x && l < r) {
			ret[0] = l;
			merge(ans[lind][search(lind, x)], ans[rind][search(rind, r)], ret);
		} else {
			ret[0] = r;
			vector<int> v1, v2;
			merge(ans[lind][search(lind, l)], ans[rind][search(rind, x)], v1);
			merge(ans[lind][search(lind, x)], ans[rind][search(rind, l)], v2);
			for (int i = 0;i < v1.size();i++) {
				if (v1[i] < v2[i]) {
					ret.insert(ret.end(), v1.begin(), v1.end());
					break;
				} else if (v1[i] > v2[i]) {
					ret.insert(ret.end(), v2.begin(), v2.end());
					break;
				}
			}
		}
	}
}
int main() {
	io
	cin >> n;
	for (int i = 1;i <= n;i++) cin >> a[i];
	getorder(1);
	for (int cnt = 0;cnt < n;cnt++) {
		int i = ord[cnt];
		int cop = i;
		while (cop) {
			ind[i].push_back(a[cop]);
			if ((cop & 1) && (cop - 1 > 0)) ind[i].push_back(a[cop - 1]);

			cop >>= 1;
		}
		//cout << i << endl;
		for (int x = 0;x < ind[i].size();x++) {
			//cout << ind[i][x] << ": ";
			//cout << 1 << endl;
			vector<int> tmp;
			solve(i, ind[i][x], tmp);
			//for (auto j:tmp) cout << j << " ";
			//cout << endl;
			ans[i].push_back(tmp);
		}
		//cout << endl;
		if (i * 2 <= n) ans[i * 2].clear();
		if (i * 2 + 1 <= n) ans[i * 2 + 1].clear();
	}
	for (int i:ans[1][0]) cout << i << " ";
	cout << "\n";
}
/*
5
3 4 2 5 1
 */

Compilation message

swap.cpp: In function 'void merge(std::vector<int>&, std::vector<int>&, std::vector<int>&)':
swap.cpp:24:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for (int i = 0;(1<<(i + 1)) - 1 <= v2.size();i++) {
      |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
swap.cpp:27:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |   if ((1<<(i + 2)) - 1 > v2.size()) {
      |       ~~~~~~~~~~~~~~~~~^~~~~~~~~~~
swap.cpp:28:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |    for (int j = (1<<(i + 1)) - 1;j < v1.size();j++) ret.push_back(v1[j]);
      |                                  ~~^~~~~~~~~~~
swap.cpp:29:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |    for (int j = (1<<(i + 1)) - 1;j < v2.size();j++) ret.push_back(v2[j]);
      |                                  ~~^~~~~~~~~~~
swap.cpp: In function 'int search(int, int)':
swap.cpp:37:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |  for (int i = 0;i < ind[v].size();i++) {
      |                 ~~^~~~~~~~~~~~~~~
swap.cpp: In function 'void solve(int, int, std::vector<int>&)':
swap.cpp:62:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |    for (int i = 0;i < v1.size();i++) {
      |                   ~~^~~~~~~~~~~
swap.cpp: In function 'int main()':
swap.cpp:89:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |   for (int x = 0;x < ind[i].size();x++) {
      |                  ~~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9708 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct
8 Correct 7 ms 9708 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 7 ms 9708 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct
8 Correct 7 ms 9708 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 7 ms 9708 KB Output is correct
11 Correct 14 ms 10220 KB Output is correct
12 Correct 11 ms 10220 KB Output is correct
13 Correct 10 ms 10220 KB Output is correct
14 Correct 11 ms 10220 KB Output is correct
15 Correct 11 ms 10220 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct
8 Correct 7 ms 9708 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 7 ms 9708 KB Output is correct
11 Correct 14 ms 10220 KB Output is correct
12 Correct 11 ms 10220 KB Output is correct
13 Correct 10 ms 10220 KB Output is correct
14 Correct 11 ms 10220 KB Output is correct
15 Correct 11 ms 10220 KB Output is correct
16 Correct 315 ms 56524 KB Output is correct
17 Correct 309 ms 56512 KB Output is correct
18 Correct 313 ms 56724 KB Output is correct
19 Correct 391 ms 57144 KB Output is correct
20 Correct 394 ms 56992 KB Output is correct

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct
8 Correct 7 ms 9708 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 7 ms 9708 KB Output is correct
11 Correct 14 ms 10220 KB Output is correct
12 Correct 11 ms 10220 KB Output is correct
13 Correct 10 ms 10220 KB Output is correct
14 Correct 11 ms 10220 KB Output is correct
15 Correct 11 ms 10220 KB Output is correct
16 Correct 315 ms 56524 KB Output is correct
17 Correct 309 ms 56512 KB Output is correct
18 Correct 313 ms 56724 KB Output is correct
19 Correct 391 ms 57144 KB Output is correct
20 Correct 394 ms 56992 KB Output is correct
21 Execution timed out 1088 ms 158768 KB Time limit exceeded
22 Halted 0 ms 0 KB -