oj.uz

Submission #160262

# Submission time Handle Problem Language Result Execution time Memory
160262 2019-10-26T15:13:23 Z iefnah06 Cats or Dogs (JOI18_catdog) C++11
38 / 100
 3000 ms 7180 KB 
#include "catdog.h"

#include<bits/stdc++.h>
using namespace std;

const int MAXN = 1.1e5;
int N;
vector<int> adj[MAXN];

int A[MAXN];

void initialize(int n, std::vector<int> a, std::vector<int> b) {
	N = n;
	for (int i = 0; i < N-1; i++) {
		adj[a[i]].push_back(b[i]);
		adj[b[i]].push_back(a[i]);
	}
	for (int i = 1; i <= N; i++) {
		A[i] = 2;
	}
}

int query();

int cat(int v) {
	A[v] = 0;
	return query();
}

int dog(int v) {
	A[v] = 1;
	return query();
}

int neighbor(int v) {
	A[v] = 2;
	return query();
}

array<int, 2> dfs(int cur, int prv) {
	array<int, 2> best = {0,0};
	for (int nxt : adj[cur]) {
		if (nxt == prv) continue;
		auto nxtbest = dfs(nxt, cur);
		for (int i = 0; i < 2; i++) best[i] += nxtbest[i];
	}
	if (A[cur] == 2) {
		for (int i = 0; i < 2; i++) best[i] = min(best[i], 1 + best[1-i]);
	} else {
		best[1-A[cur]] = 1 + best[A[cur]];
	}
	return best;
}

int query() {
	auto res = dfs(1, 0);
	return min(res[0], res[1]);
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3064 KB Output is correct
2 Correct 4 ms 2936 KB Output is correct
3 Correct 4 ms 2936 KB Output is correct
4 Correct 4 ms 2936 KB Output is correct
5 Correct 4 ms 2936 KB Output is correct
6 Correct 4 ms 2936 KB Output is correct
7 Correct 4 ms 2936 KB Output is correct
8 Correct 5 ms 2940 KB Output is correct
9 Correct 4 ms 2936 KB Output is correct
10 Correct 4 ms 2936 KB Output is correct
11 Correct 5 ms 3064 KB Output is correct
12 Correct 4 ms 2936 KB Output is correct
13 Correct 4 ms 2936 KB Output is correct
14 Correct 4 ms 2936 KB Output is correct
15 Correct 4 ms 2912 KB Output is correct
16 Correct 4 ms 2940 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3064 KB Output is correct
2 Correct 4 ms 2936 KB Output is correct
3 Correct 4 ms 2936 KB Output is correct
4 Correct 4 ms 2936 KB Output is correct
5 Correct 4 ms 2936 KB Output is correct
6 Correct 4 ms 2936 KB Output is correct
7 Correct 4 ms 2936 KB Output is correct
8 Correct 5 ms 2940 KB Output is correct
9 Correct 4 ms 2936 KB Output is correct
10 Correct 4 ms 2936 KB Output is correct
11 Correct 5 ms 3064 KB Output is correct
12 Correct 4 ms 2936 KB Output is correct
13 Correct 4 ms 2936 KB Output is correct
14 Correct 4 ms 2936 KB Output is correct
15 Correct 4 ms 2912 KB Output is correct
16 Correct 4 ms 2940 KB Output is correct
17 Correct 13 ms 2936 KB Output is correct
18 Correct 17 ms 2936 KB Output is correct
19 Correct 10 ms 2936 KB Output is correct
20 Correct 4 ms 2944 KB Output is correct
21 Correct 6 ms 2936 KB Output is correct
22 Correct 7 ms 2936 KB Output is correct
23 Correct 18 ms 2936 KB Output is correct
24 Correct 15 ms 2936 KB Output is correct
25 Correct 9 ms 2936 KB Output is correct
26 Correct 7 ms 2940 KB Output is correct
27 Correct 6 ms 2936 KB Output is correct
28 Correct 9 ms 2980 KB Output is correct
29 Correct 23 ms 3064 KB Output is correct
30 Correct 6 ms 2936 KB Output is correct
31 Correct 7 ms 2936 KB Output is correct
32 Correct 7 ms 2936 KB Output is correct

Subtask #3
0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3064 KB Output is correct
2 Correct 4 ms 2936 KB Output is correct
3 Correct 4 ms 2936 KB Output is correct
4 Correct 4 ms 2936 KB Output is correct
5 Correct 4 ms 2936 KB Output is correct
6 Correct 4 ms 2936 KB Output is correct
7 Correct 4 ms 2936 KB Output is correct
8 Correct 5 ms 2940 KB Output is correct
9 Correct 4 ms 2936 KB Output is correct
10 Correct 4 ms 2936 KB Output is correct
11 Correct 5 ms 3064 KB Output is correct
12 Correct 4 ms 2936 KB Output is correct
13 Correct 4 ms 2936 KB Output is correct
14 Correct 4 ms 2936 KB Output is correct
15 Correct 4 ms 2912 KB Output is correct
16 Correct 4 ms 2940 KB Output is correct
17 Correct 13 ms 2936 KB Output is correct
18 Correct 17 ms 2936 KB Output is correct
19 Correct 10 ms 2936 KB Output is correct
20 Correct 4 ms 2944 KB Output is correct
21 Correct 6 ms 2936 KB Output is correct
22 Correct 7 ms 2936 KB Output is correct
23 Correct 18 ms 2936 KB Output is correct
24 Correct 15 ms 2936 KB Output is correct
25 Correct 9 ms 2936 KB Output is correct
26 Correct 7 ms 2940 KB Output is correct
27 Correct 6 ms 2936 KB Output is correct
28 Correct 9 ms 2980 KB Output is correct
29 Correct 23 ms 3064 KB Output is correct
30 Correct 6 ms 2936 KB Output is correct
31 Correct 7 ms 2936 KB Output is correct
32 Correct 7 ms 2936 KB Output is correct
33 Execution timed out 3036 ms 7180 KB Time limit exceeded
34 Halted 0 ms 0 KB -