oj.uz

Submission #935967

# Submission time Handle Problem Language Result Execution time Memory
935967 2024-02-29T20:08:25 Z EJIC_B_KEDAX Comparing Plants (IOI20_plants) C++17
0 / 100
 4000 ms 60144 KB 
#include <bits/stdc++.h>
#include "plants.h"

#define x first
#define y second

using ll = long long;
 
using namespace std;
 
const int N = 1 << 19;
vector<int> g[N];
int st1[2 * N], st2[2 * N], lz1[2 * N], lz2[2 * N], twin[N], tin[N], tout[N], timer = 1, fndl[2 * N], used1[N], used2[N], fre = N / 2;
pair<int, int> fnd[2 * N];

void push(int i, int st[], int lz[]) {
	if (lz[i] != -1) {
		st[2 * i + 1] = lz[i];
		st[2 * i + 2] = lz[i];
		lz[2 * i + 1] = lz[i];
		lz[2 * i + 2] = lz[i];
		lz[i] = -1;
	}
}

void set_seg(int l, int r, int x, int st[], int lz[], int l1 = 0, int r1 = N - 1, int i = 0) {
	if (l1 >= l && r1 <= r) {
		st[i] = x;
		lz[i] = x;
		return;
	}
	if (l1 > r || r1 < l) {
		return;
	}
	push(i, st, lz);
	set_seg(l, r, x, st, lz, l1, (l1 + r1) / 2, 2 * i + 1);
	set_seg(l, r, x, st, lz, (l1 + r1) / 2 + 1, r1, 2 * i + 2);
	st[i] = min(st[2 * i + 1], st[2 * i + 2]);
}

int get(int ind, int st[], int lz[], int l1 = 0, int r1 = N - 1, int i = 0) {
	if (l1 == ind && r1 == ind) {
		return st[i];
	}
	if (l1 > ind || r1 < ind) {
		return INT32_MAX;
	}
	push(i, st, lz);
	return min(get(ind, st, lz, l1, (l1 + r1) / 2, 2 * i + 1), get(ind, st, lz, (l1 + r1) / 2 + 1, r1, 2 * i + 2));
}

void push(int i) {
	fnd[2 * i + 1].x += fndl[i];
	fnd[2 * i + 2].x += fndl[i];
	fndl[2 * i + 1] += fndl[i];
	fndl[2 * i + 2] += fndl[i];
	fndl[i] = 0;
}

void add_seg(int l, int r, int x, int l1 = 0, int r1 = N - 1, int i = 0) {
	if (l1 >= l && r1 <= r) {
		// cout << fnd[i].x << ' ';
		fnd[i].x += x;
		fndl[i] += x;
		// cout << fnd[i].x << ' ' << i << '\n';
		return;
	}
	if (l1 > r || r1 < l) {
		return;
	}
	push(i);
	add_seg(l, r, x, l1, (l1 + r1) / 2, 2 * i + 1);
	add_seg(l, r, x, (l1 + r1) / 2 + 1, r1, 2 * i + 2);
	fnd[i] = min(fnd[2 * i + 1], fnd[2 * i + 2]);
}

pair<int, int> get_min(int l, int r, int l1 = 0, int r1 = N - 1, int i = 0) {
	if (l1 >= l && r1 <= r) {
		// cout << fnd[i].x << ' ' << fnd[i].y << ' ' << i << '\n';
		return fnd[i];
	}
	if (l1 > r || r1 < l) {
		return {INT32_MAX, -1};
	}
	push(i);
	return min(get_min(l, r, l1, (l1 + r1) / 2, 2 * i + 1), get_min(l, r, (l1 + r1) / 2 + 1, r1, 2 * i + 2));
}

void dfs(int s, int p) {
	tin[s] = timer++;
	for (int i : g[s]) {
		if (i != p) {
			dfs(i, s);
		}
	}
	tout[s] = timer++;
}
 
void init(int k, vector<int> r) {
    int n = r.size();
    int ok = 0;
    for (int i = 0; i < 2 * N; i++) {
    	st1[i] = -1;
    	st2[i] = -1;
    	lz1[i] = -1;
    	lz2[i] = -1;
    }
    for (int i = 0; i < N; i++) {
    	twin[i] = -1;
    }
    for (int i = 0; i < N; i++) {
    	fnd[i + N - 1].y = i;
    }
    for (int i = 0; i < n; i++) {
    	add_seg(i, i, r[i]);
		if (r[i] == 0) {
			if (i + k > n) {
				add_seg(i + 1, n - 1, 1);
				add_seg(0, i + k - n - 1, 1);
			} else {
				add_seg(i + 1, i + k - 1, 1);
			}
		}
    }
    while (ok < n) {
    	auto [value, i] = get_min(0, n - 1);
    	// cout << value << ' ' << i << '\n';
    	// assert(value == 0);
    	if (value) {
    		exit(1);
    	}
    	int tmp1 = get(i, st1, lz1), tmp2 = get(i, st2, lz2), cnt = 0;
    	if (tmp1 != -1 && !used1[tmp1]) {
    		g[tmp1].push_back(i);
    		used1[tmp1] = 1;
    		if (tmp1 == tmp2) {
    			used2[tmp2] = 1;
    		}
    		cnt++;
    		if (twin[tmp1] != -1) {
    			twin[i] = fre++;
    			g[twin[tmp1]].push_back(twin[i]);
    			cnt++;
    		}
    	}
    	if (tmp2 != -1 && !used2[tmp2] && !cnt) {
    		g[tmp2].push_back(i);
    		used2[tmp2] = 1;
    		if (twin[tmp2] != -1) {
    			twin[i] = fre++;
    			g[twin[tmp2]].push_back(twin[i]);
    		}
    	} else if (tmp2 != -1 && !used2[tmp2]) {
    		// assert(cnt == 1);
    		// if (cnt != 1) {
    		// 	exit(1);
    		// }
    		twin[i] = fre++;
    		g[tmp2].push_back(twin[i]);
    		used2[tmp2] = 1;
    	}
        if (i + k - 1 < n) {
    		set_seg(i + 1, i + k - 1, i, st2, lz2);
    		add_seg(i + 1, i + k - 1, -1);
    	} else {
    		set_seg(i + 1, n - 1, i, st2, lz2);
    		set_seg(0, i + k - 1 - n, i, st2, lz2);
    		add_seg(i + 1, n - 1, -1);
    		add_seg(0, i + k - 1 - n, -1);
    	}
    	if (i >= k - 1) {
    		add_seg(i - k + 1, i - 1, -1);
    		int left = i - k + 1;
    		vector<int> z;
    		while (left <= i - 1 && !get_min(left, i - 1).x) {
    			z.push_back(get_min(left, i - 1).y);
    			left = z.back() + 1;
    		}
    		for (int j : z) {
    			if (j + k > n) {
					add_seg(j + 1, n - 1, 1);
					add_seg(0, j + k - n - 1, 1);
				} else {
					add_seg(j + 1, j + k - 1, 1);
				}
    		}
    		set_seg(i - k + 1, i - 1, i, st1, lz1);
    	} else {
    		add_seg(0, i - 1, -1);
    		set_seg(0, i - 1, i, st1, lz1);
    		add_seg(n + 1 - k + i, n - 1, -1);
    		set_seg(n + 1 - k + i, n - 1, i, st1, lz1);
    		// cout << get_min(2, 2).x << '\n';
    		int left = 0;
    		vector<int> z;
    		while (left <= i - 1 && !get_min(left, i - 1).x) {
    			z.push_back(get_min(left, i - 1).y);
    			left = z.back() + 1;
    		}
    		left = n + 1 - k + i;
    		while (left <= n - 1 && !get_min(left, n - 1).x) {
    			z.push_back(get_min(left, n - 1).y);
    			left = z.back() + 1;
    		}
    		for (int j : z) {
    			// cout << j << ' ';
    			if (j + k > n) {
					add_seg(j + 1, n - 1, 1);
					add_seg(0, j + k - n - 1, 1);
				} else {
					add_seg(j + 1, j + k - 1, 1);
				}
    		}
    		// cout << '\n';
    	}
        // for (int j = i - 1; j > i - k; j--) {
        //     if (j >= 0) {
        //         nw[j]--;
        //         tmp1[j] = i;
        //     } else {
        //         nw[j + n]--;
        //         tmp1[j + n] = i;
        //     }
        // }
        // for (int j = i + 1; j < i + k; j++) {
        //     if (j < n) {
        //         tmp2[j] = i;
        //     } else {
        //         tmp2[j - n] = i;
        //     }
        // }
        add_seg(i, i, INT32_MAX / 2);
        // cout << get_min(i, i).x << '\n';
        // nw[i] = INT32_MAX / 2;
    	ok++;
    }
    for (int i = 0; i < N; i++) {
	    if (!tin[i]) {
	    	dfs(i, -1);
	    }
    }
}
 
int compare_plants(int x, int y) {
	vector<int> xx(1, x), yy(1, y);
	if (twin[x] != -1) {
		xx.push_back(twin[x]);
	}
	if (twin[y] != -1) {
		yy.push_back(twin[y]);
	}
	for (int y1 : yy) {
		for (int x1 : xx) {
			if (tin[y1] < tin[x1] && tout[y1] > tin[x1]) {
				return -1;
			}
		}
	}
    // if (clc[y][x]) {
    //     return -1;
    // }
    for (int y1 : xx) {
		for (int x1 : yy) {
			if (tin[y1] < tin[x1] && tout[y1] > tin[x1]) {
				return 1;
			}
		}
	}
    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 47452 KB Output is correct
2 Correct 10 ms 47452 KB Output is correct
3 Correct 11 ms 47416 KB Output is correct
4 Correct 11 ms 47524 KB Output is correct
5 Correct 10 ms 47452 KB Output is correct
6 Correct 62 ms 50088 KB Output is correct
7 Correct 128 ms 51180 KB Output is correct
8 Correct 544 ms 58704 KB Output is correct
9 Correct 617 ms 59224 KB Output is correct
10 Correct 1241 ms 59220 KB Output is correct
11 Correct 2631 ms 60144 KB Output is correct
12 Execution timed out 4069 ms 59512 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 47452 KB Output is correct
2 Correct 10 ms 47452 KB Output is correct
3 Correct 10 ms 47436 KB Output is correct
4 Runtime error 8 ms 43356 KB Execution failed because the return code was nonzero
5 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 47452 KB Output is correct
2 Correct 10 ms 47452 KB Output is correct
3 Correct 10 ms 47436 KB Output is correct
4 Runtime error 8 ms 43356 KB Execution failed because the return code was nonzero
5 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 47448 KB Output is correct
2 Runtime error 8 ms 43356 KB Execution failed because the return code was nonzero
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 47448 KB Output is correct
2 Correct 10 ms 47504 KB Output is correct
3 Correct 10 ms 47452 KB Output is correct
4 Correct 10 ms 47452 KB Output is correct
5 Runtime error 9 ms 43608 KB Execution failed because the return code was nonzero
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 47452 KB Output is correct
2 Correct 10 ms 47452 KB Output is correct
3 Correct 10 ms 47452 KB Output is correct
4 Correct 10 ms 47452 KB Output is correct
5 Runtime error 8 ms 43432 KB Execution failed because the return code was nonzero
6 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 47452 KB Output is correct
2 Correct 10 ms 47452 KB Output is correct
3 Correct 11 ms 47416 KB Output is correct
4 Correct 11 ms 47524 KB Output is correct
5 Correct 10 ms 47452 KB Output is correct
6 Correct 62 ms 50088 KB Output is correct
7 Correct 128 ms 51180 KB Output is correct
8 Correct 544 ms 58704 KB Output is correct
9 Correct 617 ms 59224 KB Output is correct
10 Correct 1241 ms 59220 KB Output is correct
11 Correct 2631 ms 60144 KB Output is correct
12 Execution timed out 4069 ms 59512 KB Time limit exceeded
13 Halted 0 ms 0 KB -