oj.uz

Submission #39299

# Submission time Handle Problem Language Result Execution time Memory
39299 2018-01-11T03:48:35 Z 14kg Tropical Garden (IOI11_garden) C++11
69 / 100
 1796 ms 7588 KB 
#include "garden.h"
#include "gardenlib.h"
#include <algorithm>
#include <vector>
#define N 150001
#define MP 23

using namespace std;
int n, m, start, cycle1_len, cycle2_len;
int Sx, Sy, d[N][2], d1[N][2], d2[N][2];
pair<int, int> r[N];

void Push_r(int x, int y) {
	if (!r[x].first) r[x].first = y;
	else if (!r[x].second) r[x].second = y;
}
int dfs(int x, int y, int len) {
	d[x][y] = len;
	int nx = y ? r[x].second : r[x].first;
	int ny = r[nx].second && r[nx].first == x ? 1 : 0;

	if (d[nx][ny]) {
		if (d[nx][ny] == 1) return len;
		else return -1;
	}
	return dfs(nx, ny, len + 1);
}
int dfs_find1(int x, int y) {
	if (x == start && y == 0) return 0;
	if (d1[x][y] != 0) return d1[x][y];

	int nx = y ? r[x].second : r[x].first;
	int ny = r[nx].second && r[nx].first == x ? 1 : 0;

	d1[x][y] = -1, d1[x][y] = dfs_find1(nx, ny);
	if (d1[x][y] >= 0) d1[x][y]++;

	return d1[x][y];
}
int dfs_find2(int x, int y) {
	if (x == start && y == 1) return 0;
	if (d2[x][y] != 0) return d2[x][y];

	int nx = y ? r[x].second : r[x].first;
	int ny = r[nx].second && r[nx].first == x ? 1 : 0;

	d2[x][y] = -1, d2[x][y] = dfs_find2(nx, ny);
	if (d2[x][y] >= 0) d2[x][y]++;

	return d2[x][y];
}
void count_routes(int _n, int _m, int _s, int _r[][2], int Q_len, int Q[]) {
	n = _n, start = _s + 1;
	for (int i = 0; i < _m; i++) {
		int x = _r[i][0] + 1, y = _r[i][1] + 1;
		Push_r(x, y), Push_r(y, x);
	}

	cycle1_len = dfs(start, 0, 1);
	for (int i = 1; i <= n; i++) d[i][0] = d[i][1] = 0;
	cycle2_len = dfs(start, 1, 1);
	for (int i = 1; i <= n; i++) d[i][0] = d[i][1] = 0;
	
	for (int i = 1; i <= n; i++) {
		if (d1[i][0] == 0) dfs_find1(i, 0);
		if (d2[i][0] == 0) dfs_find2(i, 0);
		if (i == start) d1[i][0] = 0;
	}

	for (int i = 0; i < Q_len; i++) {
		int res = 0;
		if (Q[i] == 0) { answer(1); continue; }
		for (int j = 1; j <= n; j++) {
			if ((d1[j][0] > 0 || j == start) && cycle1_len > 0 && Q[i] >= d1[j][0] && (Q[i] - d1[j][0]) % cycle1_len == 0) res++;
			else if (d2[j][0] > 0 && cycle2_len > 0 && Q[i] >= d2[j][0] && (Q[i] - d2[j][0]) % cycle2_len == 0) res++;
		} answer(res);
	}
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 2 ms 352 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 388 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 4 ms 504 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 2 ms 352 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 388 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 4 ms 504 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 9 ms 1556 KB Output is correct
12 Correct 17 ms 2268 KB Output is correct
13 Correct 32 ms 6640 KB Output is correct
14 Correct 47 ms 5996 KB Output is correct
15 Correct 50 ms 6320 KB Output is correct
16 Correct 43 ms 4812 KB Output is correct
17 Correct 42 ms 4264 KB Output is correct
18 Correct 17 ms 2312 KB Output is correct
19 Correct 47 ms 6444 KB Output is correct
20 Correct 49 ms 6480 KB Output is correct
21 Correct 45 ms 5032 KB Output is correct
22 Correct 46 ms 4472 KB Output is correct
23 Correct 50 ms 6896 KB Output is correct

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 2 ms 352 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 388 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 4 ms 504 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 9 ms 1556 KB Output is correct
12 Correct 17 ms 2268 KB Output is correct
13 Correct 32 ms 6640 KB Output is correct
14 Correct 47 ms 5996 KB Output is correct
15 Correct 50 ms 6320 KB Output is correct
16 Correct 43 ms 4812 KB Output is correct
17 Correct 42 ms 4264 KB Output is correct
18 Correct 17 ms 2312 KB Output is correct
19 Correct 47 ms 6444 KB Output is correct
20 Correct 49 ms 6480 KB Output is correct
21 Correct 45 ms 5032 KB Output is correct
22 Correct 46 ms 4472 KB Output is correct
23 Correct 50 ms 6896 KB Output is correct
24 Correct 3 ms 296 KB Output is correct
25 Correct 86 ms 1592 KB Output is correct
26 Correct 116 ms 2632 KB Output is correct
27 Correct 1762 ms 7388 KB Output is correct
28 Correct 1144 ms 7288 KB Output is correct
29 Correct 1796 ms 7588 KB Output is correct
30 Correct 946 ms 5928 KB Output is correct
31 Correct 1089 ms 5424 KB Output is correct
32 Incorrect 126 ms 2556 KB Output isn't correct
33 Halted 0 ms 0 KB -