oj.uz

Submission #23608

# Submission time Handle Problem Language Result Execution time Memory
23608 2017-05-15T21:48:32 Z Hiasat Tropical Garden (IOI11_garden) C++14
49 / 100
 636 ms 86592 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;
			if(rem >= need[P][curIt].first){
				rem -= need[P][curIt].first;
				curIt = need[P][curIt].second;
			}
			if (rem%need[P][need[P][curIt].second].first == 0){
				cnt++;
			}
		}
		answer(cnt);
	}
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 40668 KB Output is correct
2 Correct 39 ms 40824 KB Output is correct
3 Correct 38 ms 40896 KB Output is correct
4 Correct 44 ms 40240 KB Output is correct
5 Correct 36 ms 40312 KB Output is correct
6 Correct 39 ms 40888 KB Output is correct
7 Correct 36 ms 40348 KB Output is correct
8 Correct 38 ms 40860 KB Output is correct
9 Correct 39 ms 41140 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 40668 KB Output is correct
2 Correct 39 ms 40824 KB Output is correct
3 Correct 38 ms 40896 KB Output is correct
4 Correct 44 ms 40240 KB Output is correct
5 Correct 36 ms 40312 KB Output is correct
6 Correct 39 ms 40888 KB Output is correct
7 Correct 36 ms 40348 KB Output is correct
8 Correct 38 ms 40860 KB Output is correct
9 Correct 39 ms 41140 KB Output is correct
10 Correct 35 ms 40336 KB Output is correct
11 Correct 203 ms 52496 KB Output is correct
12 Correct 376 ms 61352 KB Output is correct
13 Incorrect 636 ms 86592 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 40668 KB Output is correct
2 Correct 39 ms 40824 KB Output is correct
3 Correct 38 ms 40896 KB Output is correct
4 Correct 44 ms 40240 KB Output is correct
5 Correct 36 ms 40312 KB Output is correct
6 Correct 39 ms 40888 KB Output is correct
7 Correct 36 ms 40348 KB Output is correct
8 Correct 38 ms 40860 KB Output is correct
9 Correct 39 ms 41140 KB Output is correct
10 Correct 35 ms 40336 KB Output is correct
11 Correct 203 ms 52496 KB Output is correct
12 Correct 376 ms 61352 KB Output is correct
13 Incorrect 636 ms 86592 KB Output isn't correct
14 Halted 0 ms 0 KB -