oj.uz

Submission #80015

# Submission time Handle Problem Language Result Execution time Memory
80015 2018-10-18T08:28:50 Z antimirage Tropical Garden (IOI11_garden) C++17
49 / 100
 40 ms 17528 KB 
#include "gardenlib.h"
#include "garden.h"
#include <bits/stdc++.h>
//#include "grader.cpp"
 
#define fr first
#define sc second
#define mk make_pair
#define pb emplace_back
#define all(s) s.begin(), s.end()
 
using namespace std;
 
const int SZ = 200005;
 
long long n, m, p, q, k[SZ], edges[SZ][2], used[SZ][2], mn[SZ][2], last, go[2], lst, dp[SZ][2][2];
 
void dfs (int v, int type)
{
	used[v][type] = 1;
	
	int to_type;
	
	if (type == 0 || mn[v][1] == -1)
	{
		to_type = (mn[ mn[v][0] ][0] == v ? 1 : 0);
		
		if (mn[v][0] == p)
		{
			if ( to_type == 1 )
				dp[v][type][1] = 1,
				dp[v][type][0] = dp[p][1][0] + 1;
			else
				dp[v][type][0] = 1,
				dp[v][type][1] = dp[p][0][1] + 1;
			
			return;
		}
		if ( to_type == 1 && used[ mn[v][0] ][1] == 0 )
			dfs( mn[v][0], 1);
			
		else if ( used[ mn[v][0] ][0] == 0 )
			dfs( mn[v][0], 0);
			
		dp[v][type][0] = dp[ mn[v][0] ][to_type][0] + 1,
		dp[v][type][1] = dp[ mn[v][0] ][to_type][1] + 1;
	}
	else
	{
		to_type = (mn[ mn[v][1] ][0] == v ? 1 : 0);
		
		if (mn[v][1] == p)
		{
			if ( to_type == 1 )
				dp[v][type][1] = 1,
				dp[v][type][0] = dp[p][1][0] + 1;
			else
				dp[v][type][0] = 1,
				dp[v][type][1] = dp[p][0][1] + 1;
				
			return;
		}
		
		if ( to_type == 1 && used[ mn[v][1] ][1] == 0 )
			dfs( mn[v][1], 1);
		
		else if ( used[ mn[v][1] ][0] == 0 ) 
			dfs( mn[v][1], 0);
		
		dp[v][type][0] = dp[ mn[v][1] ][to_type][0] + 1,
		dp[v][type][1] = dp[ mn[v][1] ][to_type][1] + 1;
	}
}
void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
	memset(mn, -1, sizeof(mn) );
	n = N, m = M, p = P;
	
	for (int i = 0; i < n; i++) 
		for (int j = 0; j < 2; j++)
			for (int k = 0; k < 2; k++)
				dp[i][j][k] = 1e12;
	
	for (int i = 0; i < m; i++)
	{
		edges[i][0] = R[i][0], edges[i][1] = R[i][1]; 
		
		if ( mn[ edges[i][0] ][0] == -1 ) mn[ edges[i][0] ][0] = edges[i][1];
		else if ( mn[ edges[i][0] ][1] == -1 ) mn[ edges[i][0] ][1] = edges[i][1];
		
		if ( mn[ edges[i][1] ][0] == -1 ) mn[ edges[i][1] ][0] = edges[i][0];
		else if ( mn[ edges[i][1] ][1] == -1 ) mn[ edges[i][1] ][1] = edges[i][0];
	}
	q = Q;
	for (int i = 0; i < q; i++)
		k[i] = G[i];
	
	dfs(p, 0);
	dfs(p, 1);
 
	for (int i = 0; i < n; i++)
		if (!used[i][0]) dfs(i, 0);
		
	if ( dp[p][0][0] < dp[p][0][1] ) go[0] = 0;
	else go[0] = 1;
	
	if ( dp[p][1][0] < dp[p][1][1] ) go[1] = 0;
	else go[1] = 1;
	
	for (int i = 0; i < q; i++)
	{
		long long ans = 0, sup;
		
		for (int j = 0; j < n; j++)
		{
			if ( min( dp[j][0][0], dp[j][0][1] ) > k[i] ) continue;
			
			if ( dp[j][0][0] < dp[j][0][1] )
			{
				sup = k[i] - dp[j][0][0];
				
				if (sup == 0) {
					ans++;
					continue;
				}
				if (go[0] == 0 && sup % dp[p][0][0] == 0)
					ans++;
				else if (go[0] == 1 && (sup % (dp[p][1][0] + dp[p][0][1]) == 0  || (sup % (dp[p][1][0] + dp[p][0][1]) == dp[p][0][1] && sup / (dp[p][1][0] + dp[p][0][1]) % 2 == 1) 
				|| (sup % (dp[p][1][0] + dp[p][0][1]) == dp[p][1][0] && sup / (dp[p][1][0] + dp[p][0][1]) % 2 == 0) ) )
					ans++;
			}
			else
			{
				sup = k[i] - dp[j][0][1];
				
				if (sup == 0){
					ans++;
					continue;
				}	
				if (go[1] == 1 && sup % dp[p][1][1] == 0)
					ans++;
				else if (go[1] == 0 && (sup % (dp[p][1][0] + dp[p][0][1]) == 0  
				|| (sup % (dp[p][1][0] + dp[p][0][1]) == dp[p][1][0] && sup / (dp[p][1][0] + dp[p][0][1]) % 2 == 1) 
				|| (sup % (dp[p][1][0] + dp[p][0][1]) == dp[p][0][1] && sup / (dp[p][1][0] + dp[p][0][1]) % 2 == 0) ) )
					ans++;
			}
		}
		answer(ans);
	}
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3576 KB Output is correct
2 Correct 5 ms 3548 KB Output is correct
3 Correct 5 ms 3576 KB Output is correct
4 Correct 5 ms 3576 KB Output is correct
5 Correct 5 ms 3576 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 5 ms 3576 KB Output is correct
8 Correct 5 ms 3576 KB Output is correct
9 Correct 6 ms 3704 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3576 KB Output is correct
2 Correct 5 ms 3548 KB Output is correct
3 Correct 5 ms 3576 KB Output is correct
4 Correct 5 ms 3576 KB Output is correct
5 Correct 5 ms 3576 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 5 ms 3576 KB Output is correct
8 Correct 5 ms 3576 KB Output is correct
9 Correct 6 ms 3704 KB Output is correct
10 Correct 4 ms 3448 KB Output is correct
11 Correct 12 ms 5368 KB Output is correct
12 Correct 20 ms 6648 KB Output is correct
13 Incorrect 40 ms 17528 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3576 KB Output is correct
2 Correct 5 ms 3548 KB Output is correct
3 Correct 5 ms 3576 KB Output is correct
4 Correct 5 ms 3576 KB Output is correct
5 Correct 5 ms 3576 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 5 ms 3576 KB Output is correct
8 Correct 5 ms 3576 KB Output is correct
9 Correct 6 ms 3704 KB Output is correct
10 Correct 4 ms 3448 KB Output is correct
11 Correct 12 ms 5368 KB Output is correct
12 Correct 20 ms 6648 KB Output is correct
13 Incorrect 40 ms 17528 KB Output isn't correct
14 Halted 0 ms 0 KB -