oj.uz

Submission #23609

# Submission time Handle Problem Language Result Execution time Memory
23609 2017-05-15T21:50:19 Z Hiasat Tropical Garden (IOI11_garden) C++14
49 / 100
 652 ms 86296 KB 
#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;

vector< pii > g[150001];

int dp[150001][2][31];
int last[150001][2][31];
int mx[150001][2][31];

pii need[150001][2];

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
	for (int i = 0; i < M; ++i) {
		g[R[i][0]].push_back(make_pair(R[i][1], i));
		g[R[i][1]].push_back(make_pair(R[i][0], i));
	}
	memset(dp, -1, sizeof dp);

	for (int i = 0 ; i < N ; i++) {
		if (g[i].size()) {
			dp[i][0][0] = dp[i][1][0] = g[i][0].first;
			last[i][0][0] = last[i][1][0] = g[i][0].second;
			if (g[i][0].first == P) {
				mx[i][0][0] = 1;
			}
		}
		if (g[i].size() > 1) {
			dp[i][1][0] =  g[i][1].first;
			last[i][1][0] = g[i][1].second;
			if (g[i][1].first == P) {
				mx[i][1][0] = 1;
			}
		}
	}
	for (int k = 1 ; k <= 30; k++)
		for (int i = 0 ; i < N ; i++) {
			for (int it = 0 ; it < 2 ; it++) {
				if (dp[i][it][k - 1] != -1) {
					int vv = dp[i][it][k - 1];
					int uu = last[i][it][k - 1];
					dp[i][it][k] = dp[vv][(g[vv][0].second == uu)][k - 1];
					last[i][it][k] = last[vv][(g[vv][0].second == uu)][k - 1];
					mx[i][it][k] = max(mx[i][it][k - 1], mx[vv][(g[vv][0].second == uu)][k - 1]);
				}
			}
		}
	for (int i = 0 ; i < N ; i++) {
		for (int it = 0 ; it < 2 ; it++) {
			int go = i;
			int ll = !it?-1:g[i][0].second;
			int t = 0;
			for (int k = 30 ; k >= 0 ; k--) {
				if (mx[go][ll == g[go][0].second][k] == 0) {
					t += (1 << k);
					int nw = dp[go][ll == g[go][0].second][k];
					ll = last[go][ll == g[go][0].second][k];
					go = nw;
				}
			}
			if(dp[go][ll == g[go][0].second][0] == P){
				bool equal = last[go][ll == g[go][0].second][0] == g[P][0].second;
				need[i][it] = make_pair(t+1,equal);
			}
		}
	}
	for (int i = 0 ; i < Q ; i++) {
		int cnt = 0;
		for (int j = 0 ; j < N ; j++) {
			if(G[i] < need[j][0].first)
				continue;

			int rem = G[i] - need[j][0].first;
	
			int curIt = need[j][0].second;
			for(int it = 0 ; it < 2 ; it++){
				if(rem >= need[P][curIt].first){
					rem -= need[P][curIt].first;
					curIt = need[P][curIt].second;
				}
			}
			if (rem%need[P][curIt].first == 0){
				cnt++;
			}
		}
		answer(cnt);
	}
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 40748 KB Output is correct
2 Correct 38 ms 40752 KB Output is correct
3 Correct 38 ms 40848 KB Output is correct
4 Correct 36 ms 40256 KB Output is correct
5 Correct 39 ms 40276 KB Output is correct
6 Correct 39 ms 40820 KB Output is correct
7 Correct 36 ms 40372 KB Output is correct
8 Correct 45 ms 40796 KB Output is correct
9 Correct 39 ms 41020 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 40748 KB Output is correct
2 Correct 38 ms 40752 KB Output is correct
3 Correct 38 ms 40848 KB Output is correct
4 Correct 36 ms 40256 KB Output is correct
5 Correct 39 ms 40276 KB Output is correct
6 Correct 39 ms 40820 KB Output is correct
7 Correct 36 ms 40372 KB Output is correct
8 Correct 45 ms 40796 KB Output is correct
9 Correct 39 ms 41020 KB Output is correct
10 Correct 35 ms 40312 KB Output is correct
11 Correct 217 ms 52364 KB Output is correct
12 Correct 402 ms 61268 KB Output is correct
13 Incorrect 652 ms 86296 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 40748 KB Output is correct
2 Correct 38 ms 40752 KB Output is correct
3 Correct 38 ms 40848 KB Output is correct
4 Correct 36 ms 40256 KB Output is correct
5 Correct 39 ms 40276 KB Output is correct
6 Correct 39 ms 40820 KB Output is correct
7 Correct 36 ms 40372 KB Output is correct
8 Correct 45 ms 40796 KB Output is correct
9 Correct 39 ms 41020 KB Output is correct
10 Correct 35 ms 40312 KB Output is correct
11 Correct 217 ms 52364 KB Output is correct
12 Correct 402 ms 61268 KB Output is correct
13 Incorrect 652 ms 86296 KB Output isn't correct
14 Halted 0 ms 0 KB -