oj.uz

Submission #881468

# Submission time Handle Problem Language Result Execution time Memory
881468 2023-12-01T09:19:44 Z eitanelb Cultivation (JOI17_cultivation) C++14
80 / 100
 1712 ms 262144 KB 
#include<vector>
#include<iostream>
#include<set>
#include<fstream>
#include<algorithm>
using namespace std;
#define pi pair<int,int>
#define x first
#define y second
/*
for down - just real distances from down (optional also for left) -> O(n)
for up - just real distances, or such that together it's distance between two -> O(n)+O(n^2)
after I have up and down - O(n^2) //optional - O(nlogu), with segmentree sparse/coordination, then O(n^4 logU)
 
then O(n^5), or if r<=40 -> O(40*40*40*n)
which is 60 points
 
for 100 points, let's see that whenever you get the up bigger, it affects only one place
that can being it to O(n^3), which is 100 points
*/
 
 
int deb = 0;
pair<int, pi>* merge(pair<int, pi>* v1, pair<int, pi>* v2, int n1, int n2) {
	pair<int, pi>* v3 = new pair<int,pi>[n1+n2];
	int p1 = 0, p2 = 0, p3=0;
	while (p1 < n1 || p2 < n2) {
		if (p1 != n1 && (p2 == n2 || v1[p1].x <= v2[p2].x)) v3[p3++] = v1[p1++];
		else v3[p3++] = v2[p2++];
	}
	return v3;
}
int Time_To_Fool_The_Lab(int r, int c, int n, vector<int> X, vector<int> Y) {
	int* vdown = new int[n];
	pair<int, pi>* vup = new pair<int, pi>[n];
	//int sz = n * (n - 1) / 2;
	int sz = 0;
	for (int i = 0; i < n; i++)for (int j = 0; j < n; j++)if (X[i] > X[j])sz++;
	pair<int, pi>* vsum = new pair<int, pi>[sz];
	int t = 0;
	for (int i = 0; i < n; i++) {
		vdown[i] = X[i] - 1;
	}
	for (int i = 0; i < n; i++) {
		vup[i] = {r - X[i], {i, -1}};
		for (int j = 0; j < n; j++) if (X[i] > X[j]) vsum[t++]={X[i] - X[j] - 1, {i, j}};
	}
	sort(vdown, vdown + n);
	int h = unique(vdown, vdown + n)-vdown;
	sort(vup, vup+n);
	sort(vsum, vsum + sz);
	
	int res = 2e9;
	for (int d = 0; d < h; d++) {
		int down = vdown[d];
		pair<int, pi>* vnup = new pair<int, pi>[sz];
		for (int i = 0; i < sz;i++) vnup[i] = {vsum[i].x - down,vsum[i].y};
		vnup = merge(vnup, vup,sz,n);
 
		bool* on = new bool[n];
		int *dr=new int[n], * dl = new int[n], * maxi = new int[n], * disl = new int[n], * disr = new int[n];
		for (int i = 0; i < n; i++) {
			on[i] = 0;
			if (X[i] == r) {
				dr[i] = dl[i] = 0;
				on[i] = 1;
				disl[i] = disr[i] = 0;
				continue;
			}
			dr[i] = c - Y[i];
			dl[i] = Y[i] - 1;
			disl[i] = disr[i] = c;
			for (int j = 0; j < n; j++) {
				if (j == i) continue;
				if (X[j] > X[i] && X[j] - down <= X[i] + 1) {
					if (Y[j] > Y[i]) dr[i] = min(dr[i], Y[j] - Y[i] - 1);
					else if (Y[j] < Y[i]) dl[i] = min(dl[i], Y[i] - Y[j] - 1);
					else on[i] = 1;
 
					disr[i] = min(disr[i], c - Y[j]);
					disl[i] = min(disl[i], Y[j]-1);
				}
			}
		}
		if (deb) {cout << "disl: "; for (int i = 0; i < n; i++) cout << disl[i] << ' '; cout << endl;}
		if (deb) { cout << "disr: "; for (int i = 0; i < n; i++) cout << disr[i] << ' '; cout << endl; }
		multiset<int> maxs, sdl, sdr;
		for (int i = 0; i < n; i++) {
			if (on[i]) maxi[i] = max(dr[i], dl[i]);
			else maxi[i] = dr[i] + dl[i] + 1;
			maxs.insert(maxi[i]);
			sdl.insert(disl[i]);
			sdr.insert(disr[i]);
		}
		if (deb) {for (int i = 0; i < n; i++) {cout << dl[i] << ' ' << dr[i] << ' ' << maxi[i] << ' ' << on[i] << endl;}}
 
		// row 1 ************
		int mx1 = 0;
		set<int> st;
		for (int i = 0; i < n; i++)
			if (X[i] - down <= 1)
				st.insert(Y[i]);
		sdl.insert(*st.begin() - 1);
		sdr.insert(c - *prev(st.end()));
		int fr = 0;
		for (int i : st) {
			mx1 = max(mx1, i - fr - 1);
			fr = i;
		}
		maxs.insert(mx1);
 
		int up = 0;
 
		for (int q = 0; q < (n + sz);q++) {
			if (deb) { cout << "disl: "; for (int i = 0; i < n; i++) cout << disl[i] << ' '; cout << endl; }
			if (deb) { cout << "disr: "; for (int i = 0; i < n; i++) cout << disr[i] << ' '; cout << endl; }
			pair<int, pi> pr = vnup[q];
			if (deb) { cout << pr.x << ' ' << pr.y.x << ' ' << pr.y.y << endl; }
			up = pr.x;
			if (up < 0) continue;
			if (pr.y.y == -1) {
				int u = pr.y.x;
				maxs.erase(maxs.find(maxi[u]));
				sdl.erase(sdl.find(disl[u]));
				sdr.erase(sdr.find(disr[u]));
				maxi[u] = dr[u] = dl[u] = disr[u] = disl[u] = 0;
				maxs.insert(0); sdl.insert(0); sdr.insert(0);
			}
			else {
				int i = pr.y.x, j = pr.y.y;
				if (Y[i]== Y[j]) on[j] = 1;
				else if (Y[i] > Y[j]) {
					if (dr[j] > Y[i] - Y[j] - 1) {
						dr[j] = Y[i] - Y[j] - 1;
					}
				}
				else {
					if (dl[j] > Y[j] - Y[i] - 1) {
						dl[j] = Y[j] - Y[i] - 1;
					}
				}
 
				sdl.erase(sdl.find(disl[j]));
				sdr.erase(sdr.find(disr[j]));
				disr[j] = min(disr[j], c - Y[i]);
				disl[j] = min(disl[j], Y[i] - 1);
				sdl.insert(disl[j]);
				sdr.insert(disr[j]);
 
				maxs.erase(maxs.find(maxi[j]));
				if (on[j]) maxi[j] = max(dr[j], dl[j]);
				else maxi[j] = dr[j] + dl[j] + 1;
				maxs.insert(maxi[j]);
			}
			int mxla=*prev(sdl.end()), mxfa = *prev(sdr.end());
			int mx = *prev(maxs.end());
			if (mxla >= c || mxfa >= c) continue;
			mx = max(mx, mxla + mxfa);
			if (mx > 2e9 - up - down) continue;
			if (deb) {
				cout << mx << ' ' << mxla << ' ' << mxfa << ' ' << up << ' ' << down << endl;
			}
			res = min(res, mx + down + up);
		}
	}
	return res;
}
 
 
 
 
int run = 1;
int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	if (run == 1) {
		int R, C, N;
		cin >> R >> C >> N;
		vector<int> X(N), Y(N);
		for (int i = 0; i < N; i++) {
			cin >> X[i] >> Y[i];
		}
 
		int res = Time_To_Fool_The_Lab(R, C, N, X, Y);
 
		cout << res << endl;
	}
	if (run == 2) {
		vector<int> sizes = {0, 16, 16, 12, 20, 16, 3 };
		string name = "01-01";
		for(int j=2;j<3;j++){
			cout << "****" << j << "****\n";
			name[1] = '0' + j;
			for (int i = 11; i <= sizes[j]; i++) {
				cout << "**" << j << ' ' << i << "**\n";
				name[3] = '0' + i / 10; name[4] = '0' + i % 10;
				ifstream fin(name + ".in"), fout(name + ".out");
				int R, C, N;
				fin >> R >> C >> N;
				vector<int> X(N), Y(N);
				for (int i = 0; i < N; i++) {
					fin >> X[i] >> Y[i];
				}
 
				int nres, res = Time_To_Fool_The_Lab(R, C, N, X, Y);
 
				fout >> nres;
				if (nres != res) {
					cout << "subtask " << j << "test" << i << endl;
					cout << R << ' ' << C << endl << N << endl;
					for (int i = 0; i < N; i++) {
						cout << X[i] << ' ' << Y[i] << endl;
					}
					cout << res << ' ' << nres << endl;
					break;
				}
			}
		}
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 452 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 452 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 7 ms 1628 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 5 ms 1224 KB Output is correct
22 Correct 32 ms 6664 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 91 ms 18592 KB Output is correct
25 Correct 61 ms 10672 KB Output is correct
26 Correct 196 ms 42264 KB Output is correct
27 Correct 206 ms 42564 KB Output is correct
28 Correct 84 ms 18308 KB Output is correct
29 Correct 190 ms 40528 KB Output is correct
30 Correct 192 ms 42576 KB Output is correct
31 Correct 192 ms 42564 KB Output is correct
32 Correct 190 ms 42492 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 452 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 7 ms 1628 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 5 ms 1224 KB Output is correct
22 Correct 32 ms 6664 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 91 ms 18592 KB Output is correct
25 Correct 61 ms 10672 KB Output is correct
26 Correct 196 ms 42264 KB Output is correct
27 Correct 206 ms 42564 KB Output is correct
28 Correct 84 ms 18308 KB Output is correct
29 Correct 190 ms 40528 KB Output is correct
30 Correct 192 ms 42576 KB Output is correct
31 Correct 192 ms 42564 KB Output is correct
32 Correct 190 ms 42492 KB Output is correct
33 Correct 8 ms 1628 KB Output is correct
34 Correct 156 ms 41540 KB Output is correct
35 Correct 228 ms 42324 KB Output is correct
36 Correct 225 ms 42280 KB Output is correct
37 Correct 198 ms 37176 KB Output is correct
38 Correct 219 ms 42780 KB Output is correct
39 Correct 237 ms 42052 KB Output is correct
40 Correct 226 ms 42580 KB Output is correct
41 Correct 145 ms 15540 KB Output is correct
42 Correct 233 ms 30032 KB Output is correct
43 Correct 246 ms 40784 KB Output is correct
44 Correct 226 ms 42588 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 456 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 2 ms 604 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 2 ms 604 KB Output is correct
17 Correct 2 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 456 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 2 ms 604 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 2 ms 604 KB Output is correct
17 Correct 2 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 63 ms 11656 KB Output is correct
22 Correct 68 ms 12324 KB Output is correct
23 Correct 21 ms 12384 KB Output is correct
24 Correct 24 ms 12452 KB Output is correct
25 Correct 62 ms 12372 KB Output is correct
26 Correct 46 ms 8028 KB Output is correct
27 Correct 63 ms 12256 KB Output is correct
28 Correct 61 ms 12392 KB Output is correct
29 Correct 71 ms 12408 KB Output is correct
30 Correct 66 ms 12552 KB Output is correct
31 Correct 74 ms 12368 KB Output is correct
32 Correct 57 ms 12112 KB Output is correct
33 Correct 17 ms 12460 KB Output is correct
34 Correct 52 ms 12428 KB Output is correct
35 Correct 64 ms 12228 KB Output is correct
36 Correct 31 ms 12436 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 456 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 452 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 7 ms 1628 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 5 ms 1224 KB Output is correct
22 Correct 32 ms 6664 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 91 ms 18592 KB Output is correct
25 Correct 61 ms 10672 KB Output is correct
26 Correct 196 ms 42264 KB Output is correct
27 Correct 206 ms 42564 KB Output is correct
28 Correct 84 ms 18308 KB Output is correct
29 Correct 190 ms 40528 KB Output is correct
30 Correct 192 ms 42576 KB Output is correct
31 Correct 192 ms 42564 KB Output is correct
32 Correct 190 ms 42492 KB Output is correct
33 Correct 8 ms 1628 KB Output is correct
34 Correct 156 ms 41540 KB Output is correct
35 Correct 228 ms 42324 KB Output is correct
36 Correct 225 ms 42280 KB Output is correct
37 Correct 198 ms 37176 KB Output is correct
38 Correct 219 ms 42780 KB Output is correct
39 Correct 237 ms 42052 KB Output is correct
40 Correct 226 ms 42580 KB Output is correct
41 Correct 145 ms 15540 KB Output is correct
42 Correct 233 ms 30032 KB Output is correct
43 Correct 246 ms 40784 KB Output is correct
44 Correct 226 ms 42588 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 1 ms 604 KB Output is correct
47 Correct 2 ms 604 KB Output is correct
48 Correct 1 ms 456 KB Output is correct
49 Correct 2 ms 604 KB Output is correct
50 Correct 2 ms 604 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 604 KB Output is correct
53 Correct 1 ms 604 KB Output is correct
54 Correct 1 ms 604 KB Output is correct
55 Correct 2 ms 604 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 600 KB Output is correct
58 Correct 2 ms 348 KB Output is correct
59 Correct 1 ms 604 KB Output is correct
60 Correct 2 ms 604 KB Output is correct
61 Correct 2 ms 604 KB Output is correct
62 Correct 1 ms 604 KB Output is correct
63 Correct 1 ms 604 KB Output is correct
64 Correct 1 ms 604 KB Output is correct
65 Correct 63 ms 11656 KB Output is correct
66 Correct 68 ms 12324 KB Output is correct
67 Correct 21 ms 12384 KB Output is correct
68 Correct 24 ms 12452 KB Output is correct
69 Correct 62 ms 12372 KB Output is correct
70 Correct 46 ms 8028 KB Output is correct
71 Correct 63 ms 12256 KB Output is correct
72 Correct 61 ms 12392 KB Output is correct
73 Correct 71 ms 12408 KB Output is correct
74 Correct 66 ms 12552 KB Output is correct
75 Correct 74 ms 12368 KB Output is correct
76 Correct 57 ms 12112 KB Output is correct
77 Correct 17 ms 12460 KB Output is correct
78 Correct 52 ms 12428 KB Output is correct
79 Correct 64 ms 12228 KB Output is correct
80 Correct 31 ms 12436 KB Output is correct
81 Correct 674 ms 127868 KB Output is correct
82 Correct 663 ms 127784 KB Output is correct
83 Correct 954 ms 186468 KB Output is correct
84 Correct 974 ms 186304 KB Output is correct
85 Runtime error 1712 ms 262144 KB Execution killed with signal 9
86 Halted 0 ms 0 KB -