oj.uz

답안 #365002

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
365002 2021-02-10T17:47:00 Z r57shell Bubble Sort 2 (JOI18_bubblesort2) C++14
100 / 100
 5679 ms 60528 KB 
#include "bubblesort2.h"
#include <cstdio>
#include <string>
#include <set>
#include <algorithm>

using namespace std;

struct node
{
	node *left;
	node *right;
	int h;
	int v;
	int idx;
	int v1;
	int sz;
	int pv;
	int mv;
};

string tostr(node *a)
{
	if (!a)
		return string();
	string r = tostr(a->left);
	char tmp[20];
	sprintf(tmp," (%d, %d, %d, %d, %d)", a->v, a->v1, a->mv, a->pv, a->idx);
	r += tmp;
	return r + tostr(a->right);
}

vector<int> grab(node *a, int pv)
{
	if (!a)
		return vector<int>();
	vector<int> r = grab(a->left, pv+a->pv);
	r.push_back(pv+a->v1);
	vector<int> rb = grab(a->right, pv+a->pv);
	for (int i = 0; i < rb.size(); ++i)
		r.push_back(rb[i]);
	return r;
}

void push(node *a)
{
	int pv = a->pv;
	if (pv)
	{
		a->pv = 0;
		if (a->left)
		{
			a->left->pv += pv;
			a->left->v1 += pv;
			a->left->mv += pv;
		}
		if (a->right)
		{
			a->right->pv += pv;
			a->right->v1 += pv;
			a->right->mv += pv;
		}
	}
}

node * merge(node *a, node *b)
{
	if (!a)
		return b;
	if (!b)
		return a;
	push(a);
	push(b);
	//vector<int> qwe = grab(a,0);
	//vector<int> qwe1 = grab(b,0);
	//for (int i = 0; i < qwe1.size(); ++i)
	//	qwe.push_back(qwe1[i]);
	node *r;
	if (a->h < b->h)
	{
		a->right = merge(a->right, b);
		r = a;
	}
	else
	{
		b->left = merge(a, b->left);
		r = b;
	}
	r->sz = 1;
	r->mv = r->v1;
	if (r->left)
	{
		r->sz += r->left->sz;
		r->mv = max(r->mv, r->left->mv);
	}
	if (r->right)
	{
		r->sz += r->right->sz;
		r->mv = max(r->mv, r->right->mv);
	}
	/*vector<int> qwe2 = grab(r,0);
	int mmm = int(-1e9);
	for (int i = 0; i < qwe.size(); ++i)
		mmm = max(mmm, qwe[i]);
	if (qwe != qwe2 || r->mv != mmm)
	{
		printf("======= wrong ==== %d %d\n", r->mv, mmm);
		for (int i = 0; i < qwe.size(); ++i)
			printf("%d ", qwe[i]);
		printf("\n");
		for (int i = 0; i < qwe2.size(); ++i)
			printf("%d ", qwe2[i]);
		printf("\n [%s] [%s]\n", tostr(a).c_str(), tostr(b).c_str());
	}*/
	return r;
}

pair<node*,node*> removefirst(node *a)
{
	//string z = tostr(a);
	pair<node*,node*> r;
	//string ll = tostr(a->left);
	//string rr = tostr(a->right);
	push(a);
	if (a->left)
	{
		node *a_left = a->left;
		a->left = NULL;
		a->sz -= a_left->sz;
		a->mv = a->v1;
		if (a->right)
			a->mv = max(a->v1, a->pv + a->right->mv);
		r = removefirst(a_left);
		r.first = merge(r.first, a);
	}
	else
	{
		node *a_right = a->right;
		if (a_right)
		{
			a->sz -= a_right->sz;
			a->right = NULL;
			a->mv = a->v1;
		}
		r.second = a;
		r.first = a_right;
	}
	//printf("remove first (%s) (%s) (%s) = %s\n", z.c_str(), ll.c_str(), rr.c_str(), tostr(r).c_str());
	return r;
}

int getsz(node *a, int x)
{
	if (!a)
		return 0;
	if (a->v < x)
		return (a->left ? a->left->sz : 0) + 1 + getsz(a->right, x);
	return getsz(a->left, x);
}

pair<node*,node*> split_vidx(node *a, int x, int idx)
{
	if (!a)
		return pair<node*,node*>((node*)0, (node*)0);
	pair<node*,node*> tmp;
	//vector<int> qwe = grab(a,0);
	//pair<node*,node*> ans;
	push(a);
	if (x < a->v || (x == a->v && idx <= a->idx))
	{
		if (a->left)
		{
			a->sz -= a->left->sz;
			tmp = split_vidx(a->left, x, idx);
			a->left = NULL;
			a->mv = a->v1;
			if (a->right)
				a->mv = max(a->mv, a->right->mv + a->pv);
			return pair<node*,node*>(tmp.first, merge(tmp.second,a));
		}
		else
			return pair<node*,node*>((node*)NULL,a);
	}
	else
	{
		if (a->right)
		{
			a->sz -= a->right->sz;
			tmp = split_vidx(a->right,x,idx);
			a->right = NULL;
			a->mv = a->v1;
			if (a->left)
				a->mv = max(a->mv, a->left->mv + a->pv);
			return pair<node*,node*>(merge(a, tmp.first), tmp.second);
		}
		else
			return pair<node*,node*>(a, (node*)NULL);
	}
	/*vector<int> qwe1 = grab(ans.first,0);
	vector<int> qwe2 = grab(ans.second,0);
	for (int i = 0; i < qwe2.size(); ++i)
		qwe1.push_back(qwe2[i]);
	if (qwe1 != qwe)
	{
		printf("======= wrong split ====\n");
		for (int i = 0; i < qwe.size(); ++i)
			printf("%d ", qwe[i]);
		printf("\n");
		for (int i = 0; i < qwe1.size(); ++i)
			printf("%d ", qwe1[i]);
		printf("\n [%s] %d\n", tostr(a).c_str(), x);
	}
	return ans;*/
}

node* add_bigger(node* n, int x, int delta)
{
	pair<node*,node*> s = split_vidx(n, x, 0);
	//printf("add_bigger %d %d [%s] [%s]\n", x, delta, tostr(s.first).c_str(), tostr(s.second).c_str());
	if (s.second)
	{
		s.second->pv += delta;
		s.second->v1 += delta;
		s.second->mv += delta;
	}
	node *r = merge(s.first, s.second);
	/*printf("%s\n", tostr(r).c_str());
	vector<int> aa = grab(r, 0);
	printf("[");
	for (int i = 0; i < aa.size(); ++i)
		printf("%d ", aa[i]);
	printf("]\n");*/
	return r;
}

vector<int> countScans(vector<int> A, vector<int> X, vector<int> V)
{
	int Q = X.size();
	int N = A.size();
	vector<int> answer(Q);
	node* root = NULL;
	for (int j = 0; j < Q; ++j)
	{
		//printf("j %d\n", j);
		if (j == 0)
		{
			A[X[j]] = V[j];
			/*for (int i = 0; i < N; ++i)
				printf("%d ", A[i]);
			printf("\n");*/
			vector<int> B = A;
			sort(B.begin(), B.end());
			for (int i = 0; i < N; ++i)
			{
				int c = upper_bound(B.begin(), B.end(), A[i]) - B.begin();
				node *nd = new node();
				nd->h = rand()*32000+rand();
				nd->v = A[i];
				nd->idx = i;
				nd->v1 = i + 1 - c;
				nd->pv = 0;
				nd->mv = nd->v1;
				nd->sz = 1;
				nd->left = NULL;
				nd->right = NULL;
				pair<node*,node*> s = split_vidx(root, A[i], i);
				//printf("split_vidx [%s] [%s]\n", tostr(s.first).c_str(), tostr(s.second).c_str());
				root = merge(merge(s.first, nd),s.second);
				//printf("init %d %s\n", i, tostr(root).c_str());
			}
		}
		else
		{
			/*for (int i = 0; i < N; ++i)
				printf("%d ", A[i]);
			printf("\n");
			printf("X[%d] = %d V[%d] = %d\n", j, X[j], j, V[j]);*/
			int awas = A[X[j]];
			pair<node*,node*> s = split_vidx(root, awas, X[j]);
			pair<node*,node*> rf = removefirst(s.second);
			root = merge(s.first, rf.first);
			//printf("after delete %s\n", tostr(root).c_str());
			root = add_bigger(root, awas,1);
			root = add_bigger(root, V[j],-1);
			//printf("after modification %s\n", tostr(root).c_str());
			int c = getsz(root, V[j]+1);
			//printf("sz = %d\n", c);
			node *nd = rf.second;
			nd->h = rand()*32000+rand();
			nd->v = V[j];
			nd->idx = X[j];
			nd->v1 = X[j] + 1 - c - 1;
			nd->pv = 0;
			nd->mv = nd->v1;
			nd->sz = 1;
			nd->left = NULL;
			nd->right = NULL;
			pair<node*,node*> s1 = split_vidx(root, V[j], X[j]);
			root = merge(merge(s1.first, nd),s1.second);
		}
		A[X[j]] = V[j];
		/*{
			vector<int> B = A;
			sort(B.begin(), B.end());
			vector<pair<pair<int,int>,int>> tmp2;
			for (int z = 0; z < N; ++z)
			{
				int c = upper_bound(B.begin(), B.end(), A[z]) - B.begin();
				tmp2.push_back(pair<pair<int,int>,int>(pair<int,int>(A[z],z),z+1-c));
			}
			sort(tmp2.begin(), tmp2.end());
			vector<int> tmp;
			for (int z = 0; z < N; ++z)
			{
				tmp.push_back(tmp2[z].second);
				printf("(%d %d %d)", tmp2[z].first.first, tmp2[z].first.second, tmp2[z].second);
			}
			printf("\n");
			vector<int> tmp1 = grab(root, 0);
			if (tmp1 != tmp)
			
				printf("====== wrong ====\n");
			{	for (int z = 0; z < tmp.size(); ++z)
					printf("%d ", tmp[z]);
				printf("\n");
				for (int z = 0; z < tmp1.size(); ++z)
					printf("%d ", tmp1[z]);
				printf("\n");
			}
		}
		printf("now %s ans = %d\n", tostr(root).c_str(), root->mv);*/
		answer[j] = root->mv;
	}
	return answer;
}

Compilation message

bubblesort2.cpp: In function 'std::vector<int> grab(node*, int)':
bubblesort2.cpp:40:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |  for (int i = 0; i < rb.size(); ++i)
      |                  ~~^~~~~~~~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 364 KB Output is correct
2 Correct 4 ms 492 KB Output is correct
3 Correct 8 ms 492 KB Output is correct
4 Correct 9 ms 492 KB Output is correct
5 Correct 8 ms 492 KB Output is correct
6 Correct 9 ms 492 KB Output is correct
7 Correct 10 ms 492 KB Output is correct
8 Correct 10 ms 492 KB Output is correct
9 Correct 8 ms 492 KB Output is correct
10 Correct 8 ms 492 KB Output is correct
11 Correct 8 ms 492 KB Output is correct
12 Correct 8 ms 492 KB Output is correct
13 Correct 8 ms 492 KB Output is correct
14 Correct 8 ms 492 KB Output is correct
15 Correct 8 ms 492 KB Output is correct
16 Correct 8 ms 492 KB Output is correct
17 Correct 8 ms 492 KB Output is correct
18 Correct 10 ms 492 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 364 KB Output is correct
2 Correct 4 ms 492 KB Output is correct
3 Correct 8 ms 492 KB Output is correct
4 Correct 9 ms 492 KB Output is correct
5 Correct 8 ms 492 KB Output is correct
6 Correct 9 ms 492 KB Output is correct
7 Correct 10 ms 492 KB Output is correct
8 Correct 10 ms 492 KB Output is correct
9 Correct 8 ms 492 KB Output is correct
10 Correct 8 ms 492 KB Output is correct
11 Correct 8 ms 492 KB Output is correct
12 Correct 8 ms 492 KB Output is correct
13 Correct 8 ms 492 KB Output is correct
14 Correct 8 ms 492 KB Output is correct
15 Correct 8 ms 492 KB Output is correct
16 Correct 8 ms 492 KB Output is correct
17 Correct 8 ms 492 KB Output is correct
18 Correct 10 ms 492 KB Output is correct
19 Correct 34 ms 1004 KB Output is correct
20 Correct 39 ms 1132 KB Output is correct
21 Correct 41 ms 1132 KB Output is correct
22 Correct 39 ms 1132 KB Output is correct
23 Correct 37 ms 1132 KB Output is correct
24 Correct 39 ms 1132 KB Output is correct
25 Correct 40 ms 1132 KB Output is correct
26 Correct 37 ms 1132 KB Output is correct
27 Correct 35 ms 1132 KB Output is correct
28 Correct 36 ms 1132 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 2412 KB Output is correct
2 Correct 181 ms 4076 KB Output is correct
3 Correct 332 ms 5636 KB Output is correct
4 Correct 321 ms 5612 KB Output is correct
5 Correct 330 ms 5612 KB Output is correct
6 Correct 329 ms 5612 KB Output is correct
7 Correct 414 ms 5612 KB Output is correct
8 Correct 311 ms 5612 KB Output is correct
9 Correct 327 ms 5612 KB Output is correct
10 Correct 205 ms 5612 KB Output is correct
11 Correct 237 ms 5760 KB Output is correct
12 Correct 215 ms 5740 KB Output is correct
13 Correct 198 ms 5888 KB Output is correct
14 Correct 187 ms 5612 KB Output is correct
15 Correct 196 ms 5612 KB Output is correct
16 Correct 175 ms 5612 KB Output is correct
17 Correct 178 ms 5612 KB Output is correct
18 Correct 174 ms 5612 KB Output is correct

Subtask #4
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 364 KB Output is correct
2 Correct 4 ms 492 KB Output is correct
3 Correct 8 ms 492 KB Output is correct
4 Correct 9 ms 492 KB Output is correct
5 Correct 8 ms 492 KB Output is correct
6 Correct 9 ms 492 KB Output is correct
7 Correct 10 ms 492 KB Output is correct
8 Correct 10 ms 492 KB Output is correct
9 Correct 8 ms 492 KB Output is correct
10 Correct 8 ms 492 KB Output is correct
11 Correct 8 ms 492 KB Output is correct
12 Correct 8 ms 492 KB Output is correct
13 Correct 8 ms 492 KB Output is correct
14 Correct 8 ms 492 KB Output is correct
15 Correct 8 ms 492 KB Output is correct
16 Correct 8 ms 492 KB Output is correct
17 Correct 8 ms 492 KB Output is correct
18 Correct 10 ms 492 KB Output is correct
19 Correct 34 ms 1004 KB Output is correct
20 Correct 39 ms 1132 KB Output is correct
21 Correct 41 ms 1132 KB Output is correct
22 Correct 39 ms 1132 KB Output is correct
23 Correct 37 ms 1132 KB Output is correct
24 Correct 39 ms 1132 KB Output is correct
25 Correct 40 ms 1132 KB Output is correct
26 Correct 37 ms 1132 KB Output is correct
27 Correct 35 ms 1132 KB Output is correct
28 Correct 36 ms 1132 KB Output is correct
29 Correct 45 ms 2412 KB Output is correct
30 Correct 181 ms 4076 KB Output is correct
31 Correct 332 ms 5636 KB Output is correct
32 Correct 321 ms 5612 KB Output is correct
33 Correct 330 ms 5612 KB Output is correct
34 Correct 329 ms 5612 KB Output is correct
35 Correct 414 ms 5612 KB Output is correct
36 Correct 311 ms 5612 KB Output is correct
37 Correct 327 ms 5612 KB Output is correct
38 Correct 205 ms 5612 KB Output is correct
39 Correct 237 ms 5760 KB Output is correct
40 Correct 215 ms 5740 KB Output is correct
41 Correct 198 ms 5888 KB Output is correct
42 Correct 187 ms 5612 KB Output is correct
43 Correct 196 ms 5612 KB Output is correct
44 Correct 175 ms 5612 KB Output is correct
45 Correct 178 ms 5612 KB Output is correct
46 Correct 174 ms 5612 KB Output is correct
47 Correct 1251 ms 18656 KB Output is correct
48 Correct 5029 ms 53612 KB Output is correct
49 Correct 5679 ms 60144 KB Output is correct
50 Correct 5608 ms 60140 KB Output is correct
51 Correct 5611 ms 60140 KB Output is correct
52 Correct 5591 ms 60140 KB Output is correct
53 Correct 5521 ms 60192 KB Output is correct
54 Correct 4860 ms 60492 KB Output is correct
55 Correct 5450 ms 60436 KB Output is correct
56 Correct 5087 ms 60272 KB Output is correct
57 Correct 5215 ms 60268 KB Output is correct
58 Correct 4832 ms 60528 KB Output is correct
59 Correct 4476 ms 59036 KB Output is correct
60 Correct 4519 ms 59004 KB Output is correct
61 Correct 4579 ms 59116 KB Output is correct
62 Correct 4341 ms 58860 KB Output is correct
63 Correct 4393 ms 59000 KB Output is correct
64 Correct 4274 ms 58860 KB Output is correct
65 Correct 4290 ms 58732 KB Output is correct
66 Correct 4278 ms 58864 KB Output is correct
67 Correct 4282 ms 58732 KB Output is correct