Submission #151102

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
151102	2019-09-01T17:39:38 Z	pichulia	Bulb Game (FXCUP4_bulb)	C++17	100 / 100	299 ms	21640 KB

bulb

#include "bulb.h"
#include<algorithm>
using namespace std;
int n;
int parent[600009];
int value[600009];
int m;
int root;
int res;
vector<int> a;
vector<int> b;
vector<int> w;
void dfs(int si, int sum)
{
	if (si >= n) {
		if (value[si] == -1)
		{
			value[si] = sum;
		}
		return;
	}
	dfs(a[si], sum);
	dfs(b[si], sum + 1);
	value[si] = min(value[a[si]], value[b[si]]);
}
void dfs2(int si)
{
	if (si >= n) {
		return;
	}
	dfs2(a[si]);
	dfs2(b[si]);
	value[si] = min(value[a[si]], value[b[si]]);
}
void add_naive(int si, int val) {
	if (si >= n) {
		value[si] += val;
		return;
	}
	add_naive(a[si], val);
	add_naive(b[si], val);
	value[si] = min(value[a[si]], value[b[si]]);
}
void flip_naive(int si, int type) {
	if (type == 0) {
		add_naive(a[si], 1);
		add_naive(b[si], -1);
	}
	else {
		add_naive(a[si], -1);
		add_naive(b[si], 1);
	}
}
void dfs_type2(int si)
{
	if (si >= n)return;
	if (value[b[si]] > 2) { res = 1; return; }
	dfs_type2(b[si]);
	if (res == 1)return;
	dfs_type2(a[si]);
}
void precal(int si) {
	if (si >= n)return;
	if (value[a[si]] == 1) {
		w.push_back(si);
		return;
	}
	if(value[b[si]] == 1)
		precal(b[si]);
}
void deepdark(int si, int wi)
{
	if (si >= n)return;
	if (si != wi)
	{
		if (b[si] < n) {
			res = 0;
			return;
		}
		deepdark(a[si], wi);
	}
	else {
		if (a[si] < n)
		{
			res = 0;
			return;
		}
		deepdark(b[si], wi);
	}
}
int FindWinner(int T, std::vector<int> L, std::vector<int> R){
	n = L.size();
	a = L;
	b = R;
	m = n;
	int i, j, k;
	for (i = 0; i < n; i++) {
		parent[i] = i;
	}
	for (i = 0; i < n; i++) {
		if (L[i] >= 0)
		{
			parent[L[i]] = i;
		}
		else {
			if (L[i] == -1)
				value[m] = 999999;
			else
				value[m] = -1;
			a[i] = m;
			parent[m] = i;
			m++;
		}
		if (R[i] >= 0)
		{
			parent[R[i]] = i;
		}
		else {
			if (R[i] == -1)
				value[m] = 999999;
			else
				value[m] = -1;
			b[i] = m;
			parent[m] = i;
			m++;
		}
	}
	for (i = 0; i < n; i++) { if (parent[i] == i)break; }
	root = i;
	res = 0;
	dfs(root, 0);
	if (value[root] == 0) return 0;
	if (n <= 100) {
		for (i = 0; i < n; i++) {
			flip_naive(i, 0);
			for (j = 0; j < n; j++) {
				if (i == j) { flip_naive(j, 1); }
				else { flip_naive(j, 0); }
				dfs2(root);
				bool nono = false;
				if (value[root] == 0) nono = true;

				if (i == j) { flip_naive(j, 0); }
				else { flip_naive(j, 1); }

				if (nono)break;
			}
			flip_naive(i, 1);
			if (j == n) {
				//printf("%d is answer\n", i);
				break;
			}
		}
		return (i < n);
	}
	if (value[root] > 2)return 1;
	else if (value[root] == 2) {
		dfs_type2(root);
	}
	else {
		int superroot = root;
		while (root < n)
		{
			w.clear();
			precal(root);
			if (w.size() > 0)
			{
				flip_naive(w[0], 0);
				dfs2(superroot);
				//	printf("%d --> %d\n", w[0], value[root]);
				if (value[superroot] == 1) res = 0;
				else if (value[superroot] >= 2) res = 1;
				else {
					res = 1;
					deepdark(superroot, w[0]);
				}
				if (res == 1)
					break;
				flip_naive(w[0], 1);
			}
			root = a[root];
		}
	}
	return res;
}

Compilation message

bulb.cpp: In function 'int FindWinner(int, std::vector<int>, std::vector<int>)':
bulb.cpp:96:12: warning: unused variable 'k' [-Wunused-variable]
  int i, j, k;
            ^

Subtask #1

11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	348 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	424 KB	Output is correct
8	Correct	2 ms	348 KB	Output is correct
9	Correct	2 ms	380 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	380 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct

Subtask #2

25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	276 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	348 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	424 KB	Output is correct
10	Correct	2 ms	348 KB	Output is correct
11	Correct	2 ms	380 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	380 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	380 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	380 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct

Subtask #3

64.0 / 64.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	276 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	348 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	424 KB	Output is correct
10	Correct	2 ms	348 KB	Output is correct
11	Correct	2 ms	380 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	380 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	380 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	380 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	101 ms	12408 KB	Output is correct
28	Correct	103 ms	12792 KB	Output is correct
29	Correct	182 ms	12684 KB	Output is correct
30	Correct	135 ms	21632 KB	Output is correct
31	Correct	136 ms	21640 KB	Output is correct
32	Correct	252 ms	12252 KB	Output is correct
33	Correct	100 ms	12536 KB	Output is correct
34	Correct	299 ms	12536 KB	Output is correct
35	Correct	285 ms	12352 KB	Output is correct
36	Correct	254 ms	12588 KB	Output is correct
37	Correct	226 ms	12376 KB	Output is correct
38	Correct	265 ms	12616 KB	Output is correct
39	Correct	102 ms	12676 KB	Output is correct
40	Correct	104 ms	12300 KB	Output is correct
41	Correct	270 ms	12364 KB	Output is correct
42	Correct	268 ms	12620 KB	Output is correct
43	Correct	188 ms	12536 KB	Output is correct
44	Correct	170 ms	12536 KB	Output is correct
45	Correct	251 ms	12280 KB	Output is correct
46	Correct	131 ms	12664 KB	Output is correct
47	Correct	137 ms	14332 KB	Output is correct
48	Correct	102 ms	14588 KB	Output is correct
49	Correct	138 ms	14328 KB	Output is correct
50	Correct	103 ms	14200 KB	Output is correct