oj.uz

Submission #317573

# Submission time Handle Problem Language Result Execution time Memory
317573 2020-10-30T02:37:31 Z arnold518 Comparing Plants (IOI20_plants) C++14
27 / 100
 4000 ms 14292 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 2e5;
const int INF = 1e9;

int N, K, R[MAXN+10], H[MAXN+10];

struct SEG
{
	int tree[MAXN*4+10];
	int lazy[MAXN*4+10];

	void busy(int node, int tl, int tr)
	{
		tree[node]+=lazy[node];
		if(tl!=tr)
		{
			lazy[node*2]+=lazy[node];
			lazy[node*2+1]+=lazy[node];
		}
		lazy[node]=0;
	}
	void init(int node, int tl, int tr)
	{
		if(tl==tr)
		{
			tree[node]=0;
			lazy[node]=0;
			return;
		}
		int mid=tl+tr>>1;
		init(node*2, tl, mid);
		init(node*2+1, mid+1, tr);
		tree[node]=min(tree[node*2], tree[node*2+1]);
	}
	void update(int node, int tl, int tr, int l, int r, int k)
	{
		busy(node, tl, tr);
		if(l<=tl && tr<=r)
		{
			lazy[node]+=k;
			busy(node, tl, tr);
			return;
		}
		if(r<tl || tr<l) return;
		int mid=tl+tr>>1;
		update(node*2, tl, mid, l, r, k);
		update(node*2+1, mid+1, tr, l, r, k);
		tree[node]=min(tree[node*2], tree[node*2+1]);
	}
	void update2(int node, int tl, int tr, int p, int k)
	{
		busy(node, tl, tr);
		if(tl==tr)
		{
			tree[node]=k;
			return;
		}
		int mid=tl+tr>>1;
		if(p<=mid) update2(node*2, tl, mid, p, k);
		else update2(node*2+1, mid+1, tr, p, k);
		tree[node]=min(tree[node*2], tree[node*2+1]);
	}
	int query(int node, int tl, int tr, int l, int r)
	{
		busy(node, tl, tr);
		if(l<=tl && tr<=r) return tree[node];
		if(r<tl || tr<l) return INF;
		int mid=tl+tr>>1;
		return min(query(node*2, tl, mid, l, r), query(node*2+1, mid+1, tr, l, r));
	}
	void query2(int node, int tl, int tr, int l, int r, vector<int> &V)
	{
		busy(node, tl, tr);
		if(tree[node]!=0) return;
		if(r<tl || tr<l) return;
		if(tl==tr)
		{
			V.push_back(tl);
			return;
		}
		int mid=tl+tr>>1;
		query2(node*2, tl, mid, l, r, V);
		query2(node*2+1, mid+1, tr, l, r, V);
	}
	void init()
	{
		init(1, 0, N-1);
	}
	void update(int l, int r, int k)
	{
		l=(l%N+N)%N; r=(r%N+N)%N;
		if(l<=r) update(1, 0, N-1, l, r, k);
		else
		{
			update(1, 0, N-1, l, N-1, k);
			update(1, 0, N-1, 0, r, k);
		}
	}
	void update2(int p, int k)
	{
		p=(p%N+N)%N;
		update2(1, 0, N-1, p, k);
	}
	int query(int l, int r)
	{
		l=(l%N+N)%N; r=(r%N+N)%N;
		if(l<=r) return query(1, 0, N-1, l, r);
		else return min(query(1, 0, N-1, l, N-1), query(1, 0, N-1, 0, r));
	}
	vector<int> query2(int l, int r)
	{
		vector<int> ret;
		l=(l%N+N)%N; r=(r%N+N)%N;
		if(l<=r) query2(1, 0, N-1, l, r, ret);
		else
		{
			query2(1, 0, N-1, l, N-1, ret);
			query2(1, 0, N-1, 0, r, ret);
		}
		return ret;
	}
}seg1, seg2;

void init(int _K, vector<int> _R)
{
	K=_K; N=_R.size();
	for(int i=0; i<N; i++) R[i]=_R[i];
	seg1.init(); seg2.init();

	for(int i=0; i<N; i++)
	{
		seg1.update2(i, R[i]);
		seg2.update2(i, R[i]);
	}
	for(int i=0; i<N; i++) if(R[i]==0) seg1.update(i+1, i+K-1, 1);

	for(int i=N-1; i>=0; i--)
	{
		vector<int> V=seg1.query2(0, N-1);
		assert(!V.empty());
		int now=V[0];
		H[now]=i;
		assert(seg2.query(now-K+1, now-1)>=1);
		seg1.update(now+1, now+K-1, -1);
		seg1.update2(now, INF);
		seg2.update2(now, INF);
		seg2.update(now-K+1, now-1, -1);
		seg1.update(now-K+1, now-1, -1);

		V=seg2.query2(now-K+1, now-1);
		for(auto it : V)
		{
			//printf("!%d\n", it);
			seg1.update(it+1, it+K-1, 1);
		}

		//for(int j=0; j<N; j++) printf("%d ", seg1.query(j, j)); printf(" : seg1\n");
		//for(int j=0; j<N; j++) printf("%d ", seg2.query(j, j)); printf(" : seg2\n");
	}
	//for(int i=0; i<N; i++) printf("%d ", H[i]); printf("\n");
	return;
}

int compare_plants(int x, int y)
{
	int ans=0;
	if(H[x]>H[y]) return 1;
	if(H[x]<H[y]) return -1;
	return 0;
}

Compilation message

plants.cpp: In member function 'void SEG::init(int, int, int)':
plants.cpp:37:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |   int mid=tl+tr>>1;
      |           ~~^~~
plants.cpp: In member function 'void SEG::update(int, int, int, int, int, int)':
plants.cpp:52:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   52 |   int mid=tl+tr>>1;
      |           ~~^~~
plants.cpp: In member function 'void SEG::update2(int, int, int, int, int)':
plants.cpp:65:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   65 |   int mid=tl+tr>>1;
      |           ~~^~~
plants.cpp: In member function 'int SEG::query(int, int, int, int, int)':
plants.cpp:75:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   75 |   int mid=tl+tr>>1;
      |           ~~^~~
plants.cpp: In member function 'void SEG::query2(int, int, int, int, int, std::vector<int>&)':
plants.cpp:88:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   88 |   int mid=tl+tr>>1;
      |           ~~^~~
plants.cpp: In function 'int compare_plants(int, int)':
plants.cpp:173:6: warning: unused variable 'ans' [-Wunused-variable]
  173 |  int ans=0;
      |      ^~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Incorrect 0 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 91 ms 3576 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 92 ms 3576 KB Output is correct
11 Correct 88 ms 3520 KB Output is correct
12 Correct 90 ms 3704 KB Output is correct
13 Correct 91 ms 3576 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 91 ms 3576 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 92 ms 3576 KB Output is correct
11 Correct 88 ms 3520 KB Output is correct
12 Correct 90 ms 3704 KB Output is correct
13 Correct 91 ms 3576 KB Output is correct
14 Correct 173 ms 4728 KB Output is correct
15 Correct 1457 ms 14200 KB Output is correct
16 Correct 166 ms 4600 KB Output is correct
17 Correct 1450 ms 14200 KB Output is correct
18 Correct 1079 ms 14292 KB Output is correct
19 Correct 1080 ms 14216 KB Output is correct
20 Correct 1301 ms 14072 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 77 ms 3248 KB Output is correct
4 Correct 830 ms 14232 KB Output is correct
5 Correct 1109 ms 14200 KB Output is correct
6 Correct 1481 ms 14200 KB Output is correct
7 Correct 1458 ms 14140 KB Output is correct
8 Correct 1444 ms 14096 KB Output is correct
9 Correct 920 ms 14200 KB Output is correct
10 Execution timed out 4059 ms 14072 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Incorrect 1 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Incorrect 0 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Incorrect 0 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -