oj.uz

Submission #829531

# Submission time Handle Problem Language Result Execution time Memory
829531 2023-08-18T12:07:04 Z amunduzbaev Comparing Plants (IOI20_plants) C++17
100 / 100
 2290 ms 101412 KB 
#include "plants.h"

#include "bits/stdc++.h"
using namespace std;

#define ar array
typedef long long ll;
//~ #define int ll

const int inf = 1e9;
const int N = 2e5 + 5;
const int M = 20;

struct ST{
	ar<ll, 2> tree[N << 2];
	ll f[N << 2];
	
	void build(int lx, int rx, int x){
		if(lx == rx) { tree[x][1] = lx; return; };
		int m = (lx + rx) >> 1;
		build(lx, m, x << 1), build(m + 1, rx, x << 1 | 1);
		tree[x][1] = lx;
	}
	
	ST(){
		build(0, N, 1);
	}
	
	void push(int x, int lx, int rx){
		if(lx == rx) return;
		tree[x << 1][0] += f[x];
		tree[x << 1 | 1][0] += f[x];
		f[x << 1] += f[x], f[x << 1 | 1] += f[x];
		f[x] = 0;
	}
	
	void add(int l, int r, int v, int lx, int rx, int x){
		if(lx > r || rx < l) return;
		if(lx >= l && rx <= r){
			tree[x][0] += v;
			f[x] += v;
			return;
		}
		push(x, lx, rx);
		int m = (lx + rx) >> 1;
		add(l, r, v, lx, m, x << 1), add(l, r, v, m + 1, rx, x << 1 | 1);
		tree[x] = min(tree[x << 1], tree[x << 1 | 1]);
	}
	
	void add(int l, int r, int v) { return add(l, r, v, 0, N, 1); }
	
	ar<ll, 2> get(int l, int r, int lx, int rx, int x){
		if(lx > r || rx < l) return {inf, inf};
		if(lx >= l && rx <= r) return tree[x];
		push(x, lx, rx);
		int m = (lx + rx) >> 1;
		return min(get(l, r, lx, m, x << 1), get(l, r, m + 1, rx, x << 1 | 1));
	}
	
	ar<ll, 2> get(int l, int r){
		return get(l, r, 0, N, 1);
	}
}tree, R, builder, buildel;

vector<int> a;
vector<vector<int>> l_, r_;
int n;

void init(int k, vector<int> r) {
	
	n = r.size();
	a.resize(n);
	
	l_.resize(n, vector<int>(M, -1));
	r_.resize(n, vector<int>(M, -1));
	
	{
		int cnt = 0;
		for(int i=0;i<k - 1;i++) cnt += (r[i] == 0);
		for(int i=k - 1;;){
			tree.add(i, i, r[i] + cnt);
			buildel.add(i, i, 1);
			builder.add(i, i, 1);
			
			if(r[i]){
				R.add(i, i, r[i]);
			} else {
				R.add(i, i, inf);
			}
			
			cnt -= (r[(i + n - k + 1) % n] == 0);
			cnt += (r[i] == 0);
			i = (i + 1) % n;
			if(i == k - 1) break;
		}
	}
	
	auto to_r = [&](int p){
		int l = p, r = p + k - 1;
		ar<ll, 2> pp = buildel.get(l, min(r, n - 1));
		if(!pp[0] || r < n) return pp;
		return buildel.get(0, r - n);
	};
	auto to_l = [&](int p){
		int l = p - k + 1, r = p;
		ar<ll, 2> pp = builder.get(max(l, 0), r);
		if(!pp[0] || 0 <= l) return pp;
		return builder.get(n + l, n - 1);
	};
	
	for(int j=n;j>0;j--){
		//~ for(int i=0;i<n;i++) cout<<tree.get(i, i)[0]<<" ";
		//~ cout<<"\n";
		
		auto [v, p] = tree.get(0, n - 1);
		
		{
			ar<ll, 2> pp = to_r(p);
			while(pp[0] == 0){
				l_[pp[1]][0] = p;
				buildel.add(pp[1], pp[1], 1);
				pp = to_r(p);
			}
			pp = to_l(p);
			while(pp[0] == 0){
				r_[pp[1]][0] = p;
				builder.add(pp[1], pp[1], 1);
				pp = to_l(p);
			}
		}
		
		assert(v == 0);
		buildel.add(p, p, -1);
		builder.add(p, p, -1);
		
		a[p] = j;
		
		R.add(p, p, inf);
		tree.add(p, p, inf);
		{
			int l = p - k + 1, r = p;
			tree.add(max(l, 0), r, -1);
			R.add(max(l, 0), r, -1);
			if(l < 0) tree.add(n + l, n - 1, -1);
			if(l < 0) R.add(n + l, n - 1, -1);
			
			ar<ll, 2> pp = R.get(0, n - 1);
			while(pp[0] == 0){
				R.add(pp[1], pp[1], inf);
				{
					int l = pp[1] + 1, r = pp[1] + k - 1;
					tree.add(l, min(r, n - 1), 1);
					if(n <= r) tree.add(0,  r - n, 1);
				}
				pp = R.get(0, n - 1);
			}
		}
		{
			int l = p, r = p + k - 1;
			tree.add(l, min(r, n - 1), -1);
			if(n <= r) tree.add(0,  r - n, -1);
		}
	}
	
	for(int i=0;i<n;i++){
		if(~l_[i][0]) l_[i][0] = (i - l_[i][0] + n) % n;
		else l_[i][0] = 0;
		
		if(~r_[i][0]) r_[i][0] = (r_[i][0] - i + n) % n;
		else r_[i][0] = 0;
	}
	
	for(int j=1;j<M;j++){
		for(int i=0;i<n;i++){
			if(l_[i][j - 1] >= n) l_[i][j] = l_[i][j - 1];
			else l_[i][j] = l_[i][j - 1] + l_[(i - l_[i][j - 1] + n) % n][j - 1];
			if(r_[i][j - 1] >= n) r_[i][j] = r_[i][j - 1];
			else r_[i][j] = r_[i][j - 1] + r_[(i + r_[i][j - 1]) % n][j - 1];
		}
	}
	
	return;
}

bool check(int x, int y){
	{
		int cur = x, dis = (x - y + n) % n;
		for(int j=19;~j;j--){
			if(dis > l_[cur][j]){
				dis -= l_[cur][j];
				cur -= l_[cur][j];
				while(cur < 0) cur += n;
			}
		}
		
		if(l_[cur][0] && a[(y + dis) % n] > a[y]) return true;
	}
	
	{
		int cur = x, dis = (y - x + n) % n;
		for(int j=19;~j;j--){
			if(dis > r_[cur][j]){
				dis -= r_[cur][j];
				cur += r_[cur][j];
				while(cur >= n) cur -= n;
			}
		}
		
		if(r_[cur][0] && a[(y - dis + n) % n] > a[y]) return true;
	}
	
	return false;
}

int compare_plants(int x, int y) {
	if(check(x, y)) return 1;
	if(check(y, x)) return -1;
	
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 33364 KB Output is correct
2 Correct 12 ms 33364 KB Output is correct
3 Correct 12 ms 33336 KB Output is correct
4 Correct 12 ms 33312 KB Output is correct
5 Correct 12 ms 33292 KB Output is correct
6 Correct 83 ms 36100 KB Output is correct
7 Correct 189 ms 42652 KB Output is correct
8 Correct 1086 ms 101272 KB Output is correct
9 Correct 1118 ms 101276 KB Output is correct
10 Correct 1090 ms 101272 KB Output is correct
11 Correct 1088 ms 101192 KB Output is correct
12 Correct 1171 ms 101280 KB Output is correct
13 Correct 1046 ms 101280 KB Output is correct
14 Correct 1237 ms 101272 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 33364 KB Output is correct
2 Correct 13 ms 33296 KB Output is correct
3 Correct 14 ms 33364 KB Output is correct
4 Correct 13 ms 33300 KB Output is correct
5 Correct 14 ms 33364 KB Output is correct
6 Correct 22 ms 33748 KB Output is correct
7 Correct 104 ms 37840 KB Output is correct
8 Correct 15 ms 33364 KB Output is correct
9 Correct 21 ms 33712 KB Output is correct
10 Correct 102 ms 37832 KB Output is correct
11 Correct 113 ms 37832 KB Output is correct
12 Correct 130 ms 37832 KB Output is correct
13 Correct 102 ms 37796 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 33364 KB Output is correct
2 Correct 13 ms 33296 KB Output is correct
3 Correct 14 ms 33364 KB Output is correct
4 Correct 13 ms 33300 KB Output is correct
5 Correct 14 ms 33364 KB Output is correct
6 Correct 22 ms 33748 KB Output is correct
7 Correct 104 ms 37840 KB Output is correct
8 Correct 15 ms 33364 KB Output is correct
9 Correct 21 ms 33712 KB Output is correct
10 Correct 102 ms 37832 KB Output is correct
11 Correct 113 ms 37832 KB Output is correct
12 Correct 130 ms 37832 KB Output is correct
13 Correct 102 ms 37796 KB Output is correct
14 Correct 248 ms 42648 KB Output is correct
15 Correct 2250 ms 101276 KB Output is correct
16 Correct 219 ms 42732 KB Output is correct
17 Correct 2256 ms 101272 KB Output is correct
18 Correct 1510 ms 101280 KB Output is correct
19 Correct 1626 ms 101276 KB Output is correct
20 Correct 2059 ms 101280 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 33364 KB Output is correct
2 Correct 14 ms 33268 KB Output is correct
3 Correct 94 ms 36740 KB Output is correct
4 Correct 1449 ms 101280 KB Output is correct
5 Correct 1701 ms 101412 KB Output is correct
6 Correct 2058 ms 101268 KB Output is correct
7 Correct 2256 ms 101272 KB Output is correct
8 Correct 2260 ms 101280 KB Output is correct
9 Correct 1508 ms 101276 KB Output is correct
10 Correct 1508 ms 101272 KB Output is correct
11 Correct 1060 ms 101164 KB Output is correct
12 Correct 1328 ms 101280 KB Output is correct
13 Correct 1439 ms 101272 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 33340 KB Output is correct
2 Correct 13 ms 33340 KB Output is correct
3 Correct 14 ms 33264 KB Output is correct
4 Correct 13 ms 33308 KB Output is correct
5 Correct 13 ms 33372 KB Output is correct
6 Correct 16 ms 33364 KB Output is correct
7 Correct 34 ms 34044 KB Output is correct
8 Correct 27 ms 34016 KB Output is correct
9 Correct 31 ms 33992 KB Output is correct
10 Correct 27 ms 34072 KB Output is correct
11 Correct 32 ms 33988 KB Output is correct
12 Correct 31 ms 33984 KB Output is correct
13 Correct 26 ms 34104 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 33336 KB Output is correct
2 Correct 12 ms 33364 KB Output is correct
3 Correct 13 ms 33364 KB Output is correct
4 Correct 12 ms 33364 KB Output is correct
5 Correct 19 ms 33620 KB Output is correct
6 Correct 1540 ms 101280 KB Output is correct
7 Correct 1909 ms 101272 KB Output is correct
8 Correct 2052 ms 101272 KB Output is correct
9 Correct 2290 ms 101280 KB Output is correct
10 Correct 1363 ms 101356 KB Output is correct
11 Correct 1743 ms 101272 KB Output is correct
12 Correct 1320 ms 101276 KB Output is correct
13 Correct 1611 ms 101356 KB Output is correct
14 Correct 1921 ms 101280 KB Output is correct
15 Correct 2105 ms 101276 KB Output is correct
16 Correct 1338 ms 101276 KB Output is correct
17 Correct 1494 ms 101268 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 33364 KB Output is correct
2 Correct 12 ms 33364 KB Output is correct
3 Correct 12 ms 33336 KB Output is correct
4 Correct 12 ms 33312 KB Output is correct
5 Correct 12 ms 33292 KB Output is correct
6 Correct 83 ms 36100 KB Output is correct
7 Correct 189 ms 42652 KB Output is correct
8 Correct 1086 ms 101272 KB Output is correct
9 Correct 1118 ms 101276 KB Output is correct
10 Correct 1090 ms 101272 KB Output is correct
11 Correct 1088 ms 101192 KB Output is correct
12 Correct 1171 ms 101280 KB Output is correct
13 Correct 1046 ms 101280 KB Output is correct
14 Correct 1237 ms 101272 KB Output is correct
15 Correct 13 ms 33364 KB Output is correct
16 Correct 13 ms 33296 KB Output is correct
17 Correct 14 ms 33364 KB Output is correct
18 Correct 13 ms 33300 KB Output is correct
19 Correct 14 ms 33364 KB Output is correct
20 Correct 22 ms 33748 KB Output is correct
21 Correct 104 ms 37840 KB Output is correct
22 Correct 15 ms 33364 KB Output is correct
23 Correct 21 ms 33712 KB Output is correct
24 Correct 102 ms 37832 KB Output is correct
25 Correct 113 ms 37832 KB Output is correct
26 Correct 130 ms 37832 KB Output is correct
27 Correct 102 ms 37796 KB Output is correct
28 Correct 248 ms 42648 KB Output is correct
29 Correct 2250 ms 101276 KB Output is correct
30 Correct 219 ms 42732 KB Output is correct
31 Correct 2256 ms 101272 KB Output is correct
32 Correct 1510 ms 101280 KB Output is correct
33 Correct 1626 ms 101276 KB Output is correct
34 Correct 2059 ms 101280 KB Output is correct
35 Correct 13 ms 33364 KB Output is correct
36 Correct 14 ms 33268 KB Output is correct
37 Correct 94 ms 36740 KB Output is correct
38 Correct 1449 ms 101280 KB Output is correct
39 Correct 1701 ms 101412 KB Output is correct
40 Correct 2058 ms 101268 KB Output is correct
41 Correct 2256 ms 101272 KB Output is correct
42 Correct 2260 ms 101280 KB Output is correct
43 Correct 1508 ms 101276 KB Output is correct
44 Correct 1508 ms 101272 KB Output is correct
45 Correct 1060 ms 101164 KB Output is correct
46 Correct 1328 ms 101280 KB Output is correct
47 Correct 1439 ms 101272 KB Output is correct
48 Correct 13 ms 33340 KB Output is correct
49 Correct 13 ms 33340 KB Output is correct
50 Correct 14 ms 33264 KB Output is correct
51 Correct 13 ms 33308 KB Output is correct
52 Correct 13 ms 33372 KB Output is correct
53 Correct 16 ms 33364 KB Output is correct
54 Correct 34 ms 34044 KB Output is correct
55 Correct 27 ms 34016 KB Output is correct
56 Correct 31 ms 33992 KB Output is correct
57 Correct 27 ms 34072 KB Output is correct
58 Correct 32 ms 33988 KB Output is correct
59 Correct 31 ms 33984 KB Output is correct
60 Correct 26 ms 34104 KB Output is correct
61 Correct 119 ms 36680 KB Output is correct
62 Correct 235 ms 42640 KB Output is correct
63 Correct 1407 ms 101276 KB Output is correct
64 Correct 1630 ms 101280 KB Output is correct
65 Correct 1950 ms 101280 KB Output is correct
66 Correct 2114 ms 101276 KB Output is correct
67 Correct 2188 ms 101272 KB Output is correct
68 Correct 1468 ms 101304 KB Output is correct
69 Correct 1894 ms 101276 KB Output is correct
70 Correct 1414 ms 101276 KB Output is correct
71 Correct 1671 ms 101328 KB Output is correct
72 Correct 2031 ms 101388 KB Output is correct
73 Correct 2121 ms 101148 KB Output is correct
74 Correct 1409 ms 101276 KB Output is correct
75 Correct 1453 ms 101164 KB Output is correct