oj.uz

Submission #66872

# Submission time Handle Problem Language Result Execution time Memory
66872 2018-08-12T17:00:21 Z cdemirer Dango Maker (JOI18_dango_maker) C++17
33 / 100
 315 ms 134500 KB 
#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)


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 > 2000 && M > 2000) 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++;
	}
	/*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:41:21: 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:50:20: 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:126:20: 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:150:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < edges[x].size(); i++) {
                   ~~^~~~~~~~~~~~~~~~~
dango_maker.cpp:155:23: 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

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 2 ms 436 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 3 ms 556 KB Output is correct
6 Correct 3 ms 564 KB Output is correct
7 Correct 2 ms 564 KB Output is correct
8 Correct 3 ms 564 KB Output is correct
9 Correct 2 ms 580 KB Output is correct
10 Correct 3 ms 580 KB Output is correct
11 Correct 3 ms 580 KB Output is correct
12 Correct 2 ms 580 KB Output is correct
13 Correct 3 ms 580 KB Output is correct
14 Correct 3 ms 580 KB Output is correct
15 Correct 2 ms 580 KB Output is correct
16 Correct 2 ms 584 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 2 ms 436 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 3 ms 556 KB Output is correct
6 Correct 3 ms 564 KB Output is correct
7 Correct 2 ms 564 KB Output is correct
8 Correct 3 ms 564 KB Output is correct
9 Correct 2 ms 580 KB Output is correct
10 Correct 3 ms 580 KB Output is correct
11 Correct 3 ms 580 KB Output is correct
12 Correct 2 ms 580 KB Output is correct
13 Correct 3 ms 580 KB Output is correct
14 Correct 3 ms 580 KB Output is correct
15 Correct 2 ms 580 KB Output is correct
16 Correct 2 ms 584 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 4 ms 620 KB Output is correct
20 Correct 2 ms 620 KB Output is correct
21 Correct 2 ms 748 KB Output is correct
22 Correct 3 ms 748 KB Output is correct
23 Correct 2 ms 748 KB Output is correct
24 Correct 2 ms 748 KB Output is correct
25 Correct 2 ms 748 KB Output is correct
26 Correct 2 ms 748 KB Output is correct
27 Correct 3 ms 748 KB Output is correct
28 Correct 3 ms 748 KB Output is correct
29 Correct 2 ms 748 KB Output is correct
30 Correct 3 ms 748 KB Output is correct
31 Correct 3 ms 748 KB Output is correct
32 Correct 3 ms 748 KB Output is correct
33 Correct 3 ms 748 KB Output is correct
34 Correct 3 ms 748 KB Output is correct
35 Correct 3 ms 748 KB Output is correct
36 Correct 3 ms 748 KB Output is correct
37 Correct 2 ms 748 KB Output is correct
38 Correct 2 ms 748 KB Output is correct
39 Correct 2 ms 748 KB Output is correct
40 Correct 2 ms 748 KB Output is correct
41 Correct 2 ms 748 KB Output is correct
42 Correct 3 ms 748 KB Output is correct
43 Correct 3 ms 748 KB Output is correct
44 Correct 3 ms 748 KB Output is correct
45 Correct 2 ms 748 KB Output is correct
46 Correct 2 ms 748 KB Output is correct
47 Correct 2 ms 748 KB Output is correct
48 Correct 2 ms 748 KB Output is correct
49 Correct 3 ms 748 KB Output is correct
50 Correct 2 ms 748 KB Output is correct
51 Correct 2 ms 748 KB Output is correct
52 Correct 3 ms 748 KB Output is correct
53 Correct 2 ms 748 KB Output is correct

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 2 ms 436 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 3 ms 556 KB Output is correct
6 Correct 3 ms 564 KB Output is correct
7 Correct 2 ms 564 KB Output is correct
8 Correct 3 ms 564 KB Output is correct
9 Correct 2 ms 580 KB Output is correct
10 Correct 3 ms 580 KB Output is correct
11 Correct 3 ms 580 KB Output is correct
12 Correct 2 ms 580 KB Output is correct
13 Correct 3 ms 580 KB Output is correct
14 Correct 3 ms 580 KB Output is correct
15 Correct 2 ms 580 KB Output is correct
16 Correct 2 ms 584 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 4 ms 620 KB Output is correct
20 Correct 2 ms 620 KB Output is correct
21 Correct 2 ms 748 KB Output is correct
22 Correct 3 ms 748 KB Output is correct
23 Correct 2 ms 748 KB Output is correct
24 Correct 2 ms 748 KB Output is correct
25 Correct 2 ms 748 KB Output is correct
26 Correct 2 ms 748 KB Output is correct
27 Correct 3 ms 748 KB Output is correct
28 Correct 3 ms 748 KB Output is correct
29 Correct 2 ms 748 KB Output is correct
30 Correct 3 ms 748 KB Output is correct
31 Correct 3 ms 748 KB Output is correct
32 Correct 3 ms 748 KB Output is correct
33 Correct 3 ms 748 KB Output is correct
34 Correct 3 ms 748 KB Output is correct
35 Correct 3 ms 748 KB Output is correct
36 Correct 3 ms 748 KB Output is correct
37 Correct 2 ms 748 KB Output is correct
38 Correct 2 ms 748 KB Output is correct
39 Correct 2 ms 748 KB Output is correct
40 Correct 2 ms 748 KB Output is correct
41 Correct 2 ms 748 KB Output is correct
42 Correct 3 ms 748 KB Output is correct
43 Correct 3 ms 748 KB Output is correct
44 Correct 3 ms 748 KB Output is correct
45 Correct 2 ms 748 KB Output is correct
46 Correct 2 ms 748 KB Output is correct
47 Correct 2 ms 748 KB Output is correct
48 Correct 2 ms 748 KB Output is correct
49 Correct 3 ms 748 KB Output is correct
50 Correct 2 ms 748 KB Output is correct
51 Correct 2 ms 748 KB Output is correct
52 Correct 3 ms 748 KB Output is correct
53 Correct 2 ms 748 KB Output is correct
54 Correct 2 ms 748 KB Output is correct
55 Correct 22 ms 24792 KB Output is correct
56 Correct 4 ms 24792 KB Output is correct
57 Correct 17 ms 24792 KB Output is correct
58 Correct 67 ms 27324 KB Output is correct
59 Runtime error 315 ms 134500 KB Execution failed because the return code was nonzero
60 Halted 0 ms 0 KB -