oj.uz

Submission #317562

# Submission time Handle Problem Language Result Execution time Memory
317562 2020-10-30T02:25:08 Z arnold518 Comparing Plants (IOI20_plants) C++14
27 / 100
 4000 ms 18040 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);
		int now=V[0];
		H[now]=i;
		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:171:6: warning: unused variable 'ans' [-Wunused-variable]
  171 |  int ans=0;
      |      ^~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 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 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 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 88 ms 3708 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 84 ms 3576 KB Output is correct
11 Correct 83 ms 3576 KB Output is correct
12 Correct 81 ms 3704 KB Output is correct
13 Correct 85 ms 3704 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 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 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 88 ms 3708 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 84 ms 3576 KB Output is correct
11 Correct 83 ms 3576 KB Output is correct
12 Correct 81 ms 3704 KB Output is correct
13 Correct 85 ms 3704 KB Output is correct
14 Correct 153 ms 4596 KB Output is correct
15 Correct 1306 ms 17912 KB Output is correct
16 Correct 157 ms 6904 KB Output is correct
17 Correct 1312 ms 17820 KB Output is correct
18 Correct 962 ms 17400 KB Output is correct
19 Correct 962 ms 17872 KB Output is correct
20 Correct 1162 ms 18040 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 288 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 75 ms 3324 KB Output is correct
4 Correct 744 ms 14200 KB Output is correct
5 Correct 1028 ms 17400 KB Output is correct
6 Correct 1349 ms 17384 KB Output is correct
7 Correct 1295 ms 17656 KB Output is correct
8 Correct 1320 ms 17784 KB Output is correct
9 Correct 835 ms 17272 KB Output is correct
10 Execution timed out 4049 ms 17400 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 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 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 1 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 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Incorrect 0 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -