oj.uz

Submission #760638

# Submission time Handle Problem Language Result Execution time Memory
760638 2023-06-18T04:35:41 Z SanguineChameleon Tropical Garden (IOI11_garden) C++17
49 / 100
 50 ms 18764 KB 
#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
using namespace std;

const int maxN = 1.5e5 + 20;
vector<int> adj[maxN];
int nxt[maxN * 2];
int dist[maxN * 2][2];
int cnt[maxN * 2][2];
int cycle[2];
int dest;

void dfs(int u, int k) {
	if (u == dest) {
		dist[u][k] = 0;
		return;
	}
	dist[u][k] = -2;
	int v = nxt[u];
	if (dist[v][k] == -2) {
		dist[u][k] = -1;
		return;
	}
	else if (dist[v][k] == -3) {
		dfs(v, k);
	}
	if (dist[v][k] == -1) {
		dist[u][k] = -1;
		return;
	}
	else {
		dist[u][k] = dist[v][k] + 1;
		return;
	}
}

void count_routes(int N, int M, int P, int R[][2], int Q, int G[]) {
	for (int i = 0; i < M; i++) {
		int u = R[i][0];
		int v = R[i][1];
		adj[u].push_back(i << 1);
		adj[v].push_back(i << 1 | 1);
	}
	for (int i = 0; i < N; i++) {
		if ((int)adj[i].size() == 1) {
			nxt[adj[i][0] ^ 1] = adj[i][0];
		}
		else {
			nxt[adj[i][0] ^ 1] = adj[i][1];
			for (int j = 1; j < (int)adj[i].size(); j++) {
				nxt[adj[i][j] ^ 1] = adj[i][0];
			}
		}
	}
	for (int k = 0; k < min(2, (int)adj[P].size()); k++) {
		dest = adj[P][k];
		for (int i = 0; i < M * 2; i++) {
			dist[i][k] = -3;
		}
		for (int i = 0; i < M * 2; i++) {
			if (dist[i][k] == -3) {
				dfs(i, k);
			}
		}
		cycle[k] = (dist[nxt[dest]][k] == -1 ? -1 : dist[nxt[dest]][k] + 1);
		for (int i = 0; i < N; i++) {
			int start = adj[i][0];
			if (dist[start][k] != -1) {
				cnt[dist[start][k]][k]++;
			}
		}
		if (cycle[k] != -1) {
			assert(cycle[k] < maxN * 2);
			for (int i = cycle[k]; i < maxN * 2; i++) {
				cnt[i][k] += cnt[i - cycle[k]][k];
			}
		}
	}
	for (int i = 0; i < Q; i++) {
		int res = 0;
		for (int k = 0; k < min(2, (int)adj[P].size()); k++) {
			if (cycle[k] == -1) {
				if (G[i] < maxN * 2) {
					res += cnt[G[i]][k];
				}
			}
			else {
				if (G[i] >= maxN * 2) {
					G[i] -= ((G[i] - maxN * 2) / cycle[k] + 1) * cycle[k];
				}
				res += cnt[G[i]][k];
			}
		}
		answer(res);
	}
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6228 KB Output is correct
2 Correct 3 ms 6228 KB Output is correct
3 Correct 3 ms 6228 KB Output is correct
4 Correct 3 ms 6100 KB Output is correct
5 Correct 4 ms 6100 KB Output is correct
6 Correct 4 ms 6356 KB Output is correct
7 Correct 3 ms 6100 KB Output is correct
8 Correct 3 ms 6228 KB Output is correct
9 Correct 5 ms 6612 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6228 KB Output is correct
2 Correct 3 ms 6228 KB Output is correct
3 Correct 3 ms 6228 KB Output is correct
4 Correct 3 ms 6100 KB Output is correct
5 Correct 4 ms 6100 KB Output is correct
6 Correct 4 ms 6356 KB Output is correct
7 Correct 3 ms 6100 KB Output is correct
8 Correct 3 ms 6228 KB Output is correct
9 Correct 5 ms 6612 KB Output is correct
10 Correct 3 ms 6100 KB Output is correct
11 Correct 9 ms 7764 KB Output is correct
12 Correct 18 ms 9292 KB Output is correct
13 Correct 27 ms 18764 KB Output is correct
14 Correct 47 ms 14948 KB Output is correct
15 Correct 48 ms 15216 KB Output is correct
16 Correct 43 ms 13956 KB Output is correct
17 Correct 43 ms 13524 KB Output is correct
18 Correct 17 ms 6732 KB Output is correct
19 Correct 46 ms 15060 KB Output is correct
20 Correct 50 ms 15296 KB Output is correct
21 Correct 45 ms 13796 KB Output is correct
22 Incorrect 47 ms 13476 KB Output isn't correct
23 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6228 KB Output is correct
2 Correct 3 ms 6228 KB Output is correct
3 Correct 3 ms 6228 KB Output is correct
4 Correct 3 ms 6100 KB Output is correct
5 Correct 4 ms 6100 KB Output is correct
6 Correct 4 ms 6356 KB Output is correct
7 Correct 3 ms 6100 KB Output is correct
8 Correct 3 ms 6228 KB Output is correct
9 Correct 5 ms 6612 KB Output is correct
10 Correct 3 ms 6100 KB Output is correct
11 Correct 9 ms 7764 KB Output is correct
12 Correct 18 ms 9292 KB Output is correct
13 Correct 27 ms 18764 KB Output is correct
14 Correct 47 ms 14948 KB Output is correct
15 Correct 48 ms 15216 KB Output is correct
16 Correct 43 ms 13956 KB Output is correct
17 Correct 43 ms 13524 KB Output is correct
18 Correct 17 ms 6732 KB Output is correct
19 Correct 46 ms 15060 KB Output is correct
20 Correct 50 ms 15296 KB Output is correct
21 Correct 45 ms 13796 KB Output is correct
22 Incorrect 47 ms 13476 KB Output isn't correct
23 Halted 0 ms 0 KB -