답안 #66901 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
66901	2018-08-12T18:35:02 Z	cdemirer	Dango Maker (JOI18_dango_maker)	C++17	33 / 100	2000 ms	263168 KB

dango_maker

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vii> vvii;
typedef vector<vi> vvi;
typedef pair<double, double> dodo;
#define pb(x) push_back(x)
#define mp(x, y) make_pair(x, y)
#define INF 1000000005

#define TYPE ii
typedef struct Node {
	TYPE k;
	int p;
	Node *l, *r;
	int sz;
	TYPE mn;
	Node(TYPE param) {
		k = param;
		p = rand();
		l = r = 0;
		sz = 1;
		mn = param;
	}
} Node;
typedef pair<Node*, Node*> NodepNodep;
void update(Node *x) {
	if (!x) return;
	x->sz = (x->l ? x->l->sz : 0) + 1 + (x->r ? x->r->sz : 0);
	x->mn = (x->l ? x->l->mn : x->k);
}
NodepNodep split(Node *r, TYPE k) {
	NodepNodep nn;
	if (!r) {
		nn.first = nn.second = nullptr;
	} else if (k <= r->k) {
		nn.second = r;
		NodepNodep res = split(r->l, k);
		nn.first = res.first;
		r->l = res.second;
		update(nn.first);
		update(nn.second);
	} else {
		nn.first = r;
		NodepNodep res = split(r->r, k);
		r->r = res.first;
		nn.second = res.second;
		update(nn.first);
		update(nn.second);
	}
	return nn;
}
NodepNodep splitAlt(Node *r, int ind) {
	NodepNodep nn;
	if (!r) {
		nn.first = nn.second = nullptr;
	} else if ((r->l ? r->l->sz : 0) >= ind) {
		nn.second = r;
		NodepNodep res = splitAlt(r->l, ind);
		nn.first = res.first;
		r->l = res.second;
		update(nn.first);
		update(nn.second);
	} else {
		nn.first = r;
		NodepNodep res = splitAlt(r->r, ind-1-(r->l ? r->l->sz : 0));
		r->r = res.first;
		nn.second = res.second;
		update(nn.first);
		update(nn.second);
	}
	return nn;
}
bool exists(Node *r, TYPE k) {
	if (!r) return false;
	else if (r->k == k) return true;
	else if (k < r->k) return exists(r->l, k);
	else return exists(r->r, k);
}
Node* insert(Node *r, Node *n) {
	Node *ret;
	if (!r) {
		ret = n;
		update(ret);
	} else if (n->p > r->p) {
		NodepNodep res = split(r, n->k);
		n->l = res.first;
		n->r = res.second;
		ret = n;
		update(ret);
	} else {
		if (n->k < r->k) {
			r->l = insert(r->l, n);
		} else {
			r->r = insert(r->r, n);
		}
		ret = r;
		update(ret);
	}
	return ret;
}
Node* merge(Node *l, Node *r) {
	Node *ret;
	if (!l) ret = r;
	else if (!r) ret = l;
	else {
		if (l->p > r->p) {
			Node *res = merge(l->r, r);
			l->r = res;
			ret = l;
		} else {
			Node *res = merge(l, r->l);
			r->l = res;
			ret = r;
		}
		update(ret);
	}
	return ret;
}
Node* erase(Node *r, TYPE k) {
	Node *ret;
	if (!r) ret = nullptr;
	else if (r->k == k) {
		ret = merge(r->l, r->r);
		update(ret);
	} else {
		if (k < r->k) {
			r->l = erase(r->l, k);
		} else {
			r->r = erase(r->r, k);
		}
		ret = r;
		update(ret);
	}
	return ret;
}
/*void traversePrint(Node *r) {
	if (!r) return;
	if (r->l) traversePrint(r->l);
	cerr << r->k << " (" << r->p << ")   ";
	if (r->r) traversePrint(r->r);
}*/
#undef TYPE


int N, M;

vvi edges;
int num_nodes = 0;
int createNode() {
	edges.pb(vi());
	return num_nodes++;
}
void connect(int a, int b) {
	edges[a].pb(b);
	edges[b].pb(a);
}

const int ARRSIZE = 3000*3000;
int parent[ARRSIZE];
bool vis[ARRSIZE] = {0};
int bfs(int x, bool b) {
	int ret = 0;
	queue<ii> Q;
	Q.push(mp(x, (int)b));
	while (!Q.empty()) {
		ii a = Q.front(); Q.pop();
		if (vis[a.first]) {
			continue;
		}
		vis[a.first] = true;
		ret += a.second;
		for (int i = 0; i < edges[a.first].size(); i++) {
			int y = edges[a.first][i];
			Q.push(mp(y, !a.second));
		}
	}
	return ret;
}
void clean(int x) {
	vis[x] = false;
	for (int i = 0; i < edges[x].size(); i++) {
		int y = edges[x][i];
		if (!vis[y]) continue;
		clean(y);
	}
}	

int mat[3000][3000];
int touch[3000][3000][2];
void func() {
	
	cin >> N >> M;
	for (int i = 0; i < N; i++) {
		string s; cin >> s;
		for (int j = 0; j < M; j++) {
			if (s[j] == 'R') mat[i][j] = 0;
			if (s[j] == 'G') mat[i][j] = 1;
			if (s[j] == 'W') mat[i][j] = 2;
		}
	}
	for (int i = 0; i < N; i++) for (int j = 0; j < M; j++) touch[i][j][0] = touch[i][j][1] = -1;
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < M-2; j++) {
			if (mat[i][j]*9 + mat[i][j+1]*3 + mat[i][j+2]*1 == 5) {
				int x = createNode();
				/*if (touch[i][j].size() > 0) {
					for (int k = 0; k < touch[i][j].size(); k++) connect(x, touch[i][j][k]);
				}*/
				if (touch[i][j][0] != -1) touch[i][j][1] = x;
				else touch[i][j][0] = x;
				//touch[i][j].pb(x);
				/*if (touch[i][j+1].size() > 0) {
					for (int k = 0; k < touch[i][j+1].size(); k++) connect(x, touch[i][j+1][k]);
				}*/
				if (touch[i][j+1][0] != -1) touch[i][j+1][1] = x;
				else touch[i][j+1][0] = x;
				//touch[i][j+1].pb(x);
				/*if (touch[i][j+2].size() > 0) {
					for (int k = 0; k < touch[i][j+2].size(); k++) connect(x, touch[i][j+2][k]);
				}*/
				if (touch[i][j+2][0] != -1) touch[i][j+2][1] = x;
				else touch[i][j+2][0] = x;
				//touch[i][j+2].pb(x);
			}
		}
	}
	for (int i = 0; i < N-2; i++) {
		for (int j = 0; j < M; j++) {
			if (mat[i][j]*9 + mat[i+1][j]*3 + mat[i+2][j]*1 == 5) {
				int x = createNode();
				//if (touch[i][j].size() > 0) {
				//for (int k = 0; k < touch[i][j].size(); k++) connect(x, touch[i][j][k]);
				if (touch[i][j][0] != -1) connect(x, touch[i][j][0]);
				if (touch[i][j][1] != -1) connect(x, touch[i][j][1]);
				//}
				//touch[i][j].pb(x);
				//if (touch[i+1][j].size() > 0) {
				//for (int k = 0; k < touch[i+1][j].size(); k++) connect(x, touch[i+1][j][k]);
				if (touch[i+1][j][0] != -1) connect(x, touch[i+1][j][0]);
				if (touch[i+1][j][1] != -1) connect(x, touch[i+1][j][1]);
				//}
				//touch[i+1][j].pb(x);
				//if (touch[i+2][j].size() > 0) {
				//for (int k = 0; k < touch[i+2][j].size(); k++) connect(x, touch[i+2][j][k]);
				if (touch[i+2][j][0] != -1) connect(x, touch[i+2][j][0]);
				if (touch[i+2][j][1] != -1) connect(x, touch[i+2][j][1]);
				//}
				//touch[i+2][j].pb(x);
			}
		}
	}
}

int count_component(int x) {
	vis[x] = true;
	int ret = 1;
	for (int i = 0; i < edges[x].size(); i++) {
		int y = edges[x][i];
		if (vis[y]) continue;
		ret += count_component(y);
	}
	return ret;
}

int es[ARRSIZE] = {0};
int main(int argc, char **argv) {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	func();
	
	//if (N > 2999 && M > 2999) exit(-1);
	
	/*int sum = 0;
	set<ii> S;
	for (int i = 0; i < num_nodes; i++) es[i] = edges[i].size();
	for (int i = 0; i < num_nodes; i++) S.insert(mp(es[i], i));
	while (!S.empty()) {
		int x = (*S.begin()).second;
		S.erase(S.begin());
		for (int i = 0; i < edges[x].size(); i++) {
			int y = edges[x][i];
			auto it = S.find(mp(es[y], y));
			if (it != S.end()) {
				S.erase(it);
				for (int j = 0; j < edges[y].size(); j++) {
					int y2 = edges[y][j];
					auto it2 = S.find(mp(es[y2], y2));
					if (it2 != S.end()) {
						S.erase(it2);
						es[y2]--;
						S.insert(mp(es[y2], y2));
					}
				}
			}
		}
		sum++;
	}*/
	assert(num_nodes < 1000000);
	int sum = 0;
	srand(time(0));
	Node *root = nullptr;
	for (int i = 0; i < num_nodes; i++) es[i] = edges[i].size();
	for (int i = 0; i < num_nodes; i++) {
		Node *n = new Node(mp(es[i], i));
		root = insert(root, n);
	}
	while (root != nullptr) {
		int x = root->mn.second;
		root = erase(root, mp(es[x], x));
		for (int i = 0; i < edges[x].size(); i++) {
			int y = edges[x][i];
			if (exists(root, mp(es[y], y))) {
				root = erase(root, mp(es[y], y));
				for (int j = 0; j < edges[y].size(); j++) {
					int y2 = edges[y][j];
					if (exists(root, mp(es[y2], y2))) {
						root = erase(root, mp(es[y2], y2));
						es[y2]--;
						Node *n = new Node(mp(es[y2], y2));
						root = insert(root, n);
					}
				}
			}
		}
		sum++;
	}
	/*for (int i = 0; i < num_nodes; i++) {
		if (vis[i]) continue;
		int a = bfs(i, true);
		clean(i);
		int b = bfs(i, false);
		assert(abs(a-b) <= 1);
		sum += max(a, b);
	}*/
	cout << sum << endl;
	
	return 0;
}

Compilation message

dango_maker.cpp: In function 'int bfs(int, bool)':
dango_maker.cpp:176:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < edges[a.first].size(); i++) {
                   ~~^~~~~~~~~~~~~~~~~~~~~~~
dango_maker.cpp: In function 'void clean(int)':
dango_maker.cpp:185:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edges[x].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~
dango_maker.cpp: In function 'int count_component(int)':
dango_maker.cpp:261:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edges[x].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~
dango_maker.cpp: In function 'int main(int, char**)':
dango_maker.cpp:315:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < edges[x].size(); i++) {
                   ~~^~~~~~~~~~~~~~~~~
dango_maker.cpp:319:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j = 0; j < edges[y].size(); j++) {
                     ~~^~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	412 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	484 KB	Output is correct
7	Correct	3 ms	612 KB	Output is correct
8	Correct	2 ms	680 KB	Output is correct
9	Correct	2 ms	680 KB	Output is correct
10	Correct	2 ms	680 KB	Output is correct
11	Correct	2 ms	680 KB	Output is correct
12	Correct	2 ms	680 KB	Output is correct
13	Correct	2 ms	680 KB	Output is correct
14	Correct	2 ms	680 KB	Output is correct
15	Correct	2 ms	680 KB	Output is correct
16	Correct	2 ms	680 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	412 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	484 KB	Output is correct
7	Correct	3 ms	612 KB	Output is correct
8	Correct	2 ms	680 KB	Output is correct
9	Correct	2 ms	680 KB	Output is correct
10	Correct	2 ms	680 KB	Output is correct
11	Correct	2 ms	680 KB	Output is correct
12	Correct	2 ms	680 KB	Output is correct
13	Correct	2 ms	680 KB	Output is correct
14	Correct	2 ms	680 KB	Output is correct
15	Correct	2 ms	680 KB	Output is correct
16	Correct	2 ms	680 KB	Output is correct
17	Correct	2 ms	680 KB	Output is correct
18	Correct	2 ms	680 KB	Output is correct
19	Correct	2 ms	680 KB	Output is correct
20	Correct	2 ms	680 KB	Output is correct
21	Correct	2 ms	680 KB	Output is correct
22	Correct	2 ms	680 KB	Output is correct
23	Correct	2 ms	680 KB	Output is correct
24	Correct	3 ms	680 KB	Output is correct
25	Correct	2 ms	680 KB	Output is correct
26	Correct	3 ms	680 KB	Output is correct
27	Correct	2 ms	680 KB	Output is correct
28	Correct	3 ms	680 KB	Output is correct
29	Correct	2 ms	680 KB	Output is correct
30	Correct	3 ms	680 KB	Output is correct
31	Correct	2 ms	680 KB	Output is correct
32	Correct	3 ms	680 KB	Output is correct
33	Correct	3 ms	688 KB	Output is correct
34	Correct	3 ms	688 KB	Output is correct
35	Correct	2 ms	704 KB	Output is correct
36	Correct	2 ms	704 KB	Output is correct
37	Correct	2 ms	704 KB	Output is correct
38	Correct	2 ms	704 KB	Output is correct
39	Correct	3 ms	704 KB	Output is correct
40	Correct	2 ms	704 KB	Output is correct
41	Correct	3 ms	704 KB	Output is correct
42	Correct	3 ms	704 KB	Output is correct
43	Correct	2 ms	704 KB	Output is correct
44	Correct	2 ms	704 KB	Output is correct
45	Correct	4 ms	704 KB	Output is correct
46	Correct	2 ms	704 KB	Output is correct
47	Correct	3 ms	704 KB	Output is correct
48	Correct	2 ms	704 KB	Output is correct
49	Correct	3 ms	704 KB	Output is correct
50	Correct	3 ms	704 KB	Output is correct
51	Correct	2 ms	704 KB	Output is correct
52	Correct	2 ms	732 KB	Output is correct
53	Correct	3 ms	732 KB	Output is correct

Subtask #3
0 / 67.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	412 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	484 KB	Output is correct
7	Correct	3 ms	612 KB	Output is correct
8	Correct	2 ms	680 KB	Output is correct
9	Correct	2 ms	680 KB	Output is correct
10	Correct	2 ms	680 KB	Output is correct
11	Correct	2 ms	680 KB	Output is correct
12	Correct	2 ms	680 KB	Output is correct
13	Correct	2 ms	680 KB	Output is correct
14	Correct	2 ms	680 KB	Output is correct
15	Correct	2 ms	680 KB	Output is correct
16	Correct	2 ms	680 KB	Output is correct
17	Correct	2 ms	680 KB	Output is correct
18	Correct	2 ms	680 KB	Output is correct
19	Correct	2 ms	680 KB	Output is correct
20	Correct	2 ms	680 KB	Output is correct
21	Correct	2 ms	680 KB	Output is correct
22	Correct	2 ms	680 KB	Output is correct
23	Correct	2 ms	680 KB	Output is correct
24	Correct	3 ms	680 KB	Output is correct
25	Correct	2 ms	680 KB	Output is correct
26	Correct	3 ms	680 KB	Output is correct
27	Correct	2 ms	680 KB	Output is correct
28	Correct	3 ms	680 KB	Output is correct
29	Correct	2 ms	680 KB	Output is correct
30	Correct	3 ms	680 KB	Output is correct
31	Correct	2 ms	680 KB	Output is correct
32	Correct	3 ms	680 KB	Output is correct
33	Correct	3 ms	688 KB	Output is correct
34	Correct	3 ms	688 KB	Output is correct
35	Correct	2 ms	704 KB	Output is correct
36	Correct	2 ms	704 KB	Output is correct
37	Correct	2 ms	704 KB	Output is correct
38	Correct	2 ms	704 KB	Output is correct
39	Correct	3 ms	704 KB	Output is correct
40	Correct	2 ms	704 KB	Output is correct
41	Correct	3 ms	704 KB	Output is correct
42	Correct	3 ms	704 KB	Output is correct
43	Correct	2 ms	704 KB	Output is correct
44	Correct	2 ms	704 KB	Output is correct
45	Correct	4 ms	704 KB	Output is correct
46	Correct	2 ms	704 KB	Output is correct
47	Correct	3 ms	704 KB	Output is correct
48	Correct	2 ms	704 KB	Output is correct
49	Correct	3 ms	704 KB	Output is correct
50	Correct	3 ms	704 KB	Output is correct
51	Correct	2 ms	704 KB	Output is correct
52	Correct	2 ms	732 KB	Output is correct
53	Correct	3 ms	732 KB	Output is correct
54	Correct	3 ms	732 KB	Output is correct
55	Correct	19 ms	24828 KB	Output is correct
56	Correct	4 ms	24828 KB	Output is correct
57	Correct	18 ms	24828 KB	Output is correct
58	Correct	84 ms	28760 KB	Output is correct
59	Correct	688 ms	174592 KB	Output is correct
60	Correct	807 ms	177328 KB	Output is correct
61	Correct	743 ms	177328 KB	Output is correct
62	Correct	3 ms	177328 KB	Output is correct
63	Correct	766 ms	177328 KB	Output is correct
64	Execution timed out	2037 ms	263168 KB	Time limit exceeded
65	Halted	0 ms	0 KB	-

답안 #66901

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 20.0 / 20.0

Subtask #3 0 / 67.0

Subtask #1
13.0 / 13.0

Subtask #2
20.0 / 20.0

Subtask #3
0 / 67.0