oj.uz

Submission #66752

# Submission time Handle Problem Language Result Execution time Memory
66752 2018-08-12T08:57:48 Z cdemirer Dango Maker (JOI18_dango_maker) C++17
13 / 100
 210 ms 212236 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 dpi[ARRSIZE], dpe[ARRSIZE];

void dfs(int x) {
	vis[x] = true;
	int no = -1;
	for (int i = 0; i < edges[x].size(); i++) {
		int y = edges[x][i];
		if (y == parent[x]) continue;
		if (vis[y]) {
			no = i;
			continue;
		}
		parent[y] = x;
		dfs(y);
	}
	dpi[x] = 1;
	for (int i = 0; i < edges[x].size(); i++) {
		int y = edges[x][i];
		if (y == parent[x]) continue;
		if (y == no) continue;
		dpi[x] += dpe[y];
	}
	dpe[x] = 0;
	for (int i = 0; i < edges[x].size(); i++) {
		int y = edges[x][i];
		if (y == parent[x]) continue;
		if (y == no) continue;
		dpe[x] += max(dpi[y], dpe[y]);
	}
}

void memory_opt() {
	int mat[3000][3000];
	vi touch[3000][3000];
	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-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]);
				}
				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]);
				}
				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]);
				}
				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]);
				}
				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]);
				}
				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]);
				}
				touch[i+2][j].pb(x);
			}
		}
	}
}

int main(int argc, char **argv) {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	memory_opt();
	
	//cerr << num_nodes << endl;
	int sum = 0;
	for (int i = 0; i < num_nodes; i++) {
		if (vis[i]) continue;
		parent[i] = -1;
		dfs(i);
		sum += max(dpi[i], dpe[i]);
		//cerr << "i am " << i << " i added " << max(dpi[i], dpe[i]) << endl;
	}
	cout << sum << endl;
	
	return 0;
}

Compilation message

dango_maker.cpp: In function 'void dfs(int)':
dango_maker.cpp:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edges[x].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~
dango_maker.cpp:46:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edges[x].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~
dango_maker.cpp:53:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edges[x].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~
dango_maker.cpp: In function 'void memory_opt()':
dango_maker.cpp:78:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int k = 0; k < touch[i][j].size(); k++) connect(x, touch[i][j][k]);
                      ~~^~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:82:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int k = 0; k < touch[i][j+1].size(); k++) connect(x, touch[i][j+1][k]);
                      ~~^~~~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:86:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int k = 0; k < touch[i][j+2].size(); k++) connect(x, touch[i][j+2][k]);
                      ~~^~~~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:97:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int k = 0; k < touch[i][j].size(); k++) connect(x, touch[i][j][k]);
                      ~~^~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:101:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int k = 0; k < touch[i+1][j].size(); k++) connect(x, touch[i+1][j][k]);
                      ~~^~~~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:105:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (int k = 0; k < touch[i+2][j].size(); k++) connect(x, touch[i+2][j][k]);
                      ~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 183 ms 211704 KB Output is correct
2 Correct 205 ms 211704 KB Output is correct
3 Correct 201 ms 211748 KB Output is correct
4 Correct 186 ms 211996 KB Output is correct
5 Correct 189 ms 211996 KB Output is correct
6 Correct 207 ms 211996 KB Output is correct
7 Correct 192 ms 212080 KB Output is correct
8 Correct 201 ms 212080 KB Output is correct
9 Correct 201 ms 212080 KB Output is correct
10 Correct 192 ms 212080 KB Output is correct
11 Correct 178 ms 212080 KB Output is correct
12 Correct 197 ms 212148 KB Output is correct
13 Correct 202 ms 212148 KB Output is correct
14 Correct 175 ms 212148 KB Output is correct
15 Correct 191 ms 212148 KB Output is correct
16 Correct 193 ms 212148 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 183 ms 211704 KB Output is correct
2 Correct 205 ms 211704 KB Output is correct
3 Correct 201 ms 211748 KB Output is correct
4 Correct 186 ms 211996 KB Output is correct
5 Correct 189 ms 211996 KB Output is correct
6 Correct 207 ms 211996 KB Output is correct
7 Correct 192 ms 212080 KB Output is correct
8 Correct 201 ms 212080 KB Output is correct
9 Correct 201 ms 212080 KB Output is correct
10 Correct 192 ms 212080 KB Output is correct
11 Correct 178 ms 212080 KB Output is correct
12 Correct 197 ms 212148 KB Output is correct
13 Correct 202 ms 212148 KB Output is correct
14 Correct 175 ms 212148 KB Output is correct
15 Correct 191 ms 212148 KB Output is correct
16 Correct 193 ms 212148 KB Output is correct
17 Correct 204 ms 212148 KB Output is correct
18 Correct 210 ms 212148 KB Output is correct
19 Correct 204 ms 212148 KB Output is correct
20 Correct 184 ms 212148 KB Output is correct
21 Correct 202 ms 212148 KB Output is correct
22 Correct 203 ms 212148 KB Output is correct
23 Correct 201 ms 212232 KB Output is correct
24 Correct 198 ms 212232 KB Output is correct
25 Correct 192 ms 212232 KB Output is correct
26 Correct 203 ms 212232 KB Output is correct
27 Incorrect 201 ms 212236 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 183 ms 211704 KB Output is correct
2 Correct 205 ms 211704 KB Output is correct
3 Correct 201 ms 211748 KB Output is correct
4 Correct 186 ms 211996 KB Output is correct
5 Correct 189 ms 211996 KB Output is correct
6 Correct 207 ms 211996 KB Output is correct
7 Correct 192 ms 212080 KB Output is correct
8 Correct 201 ms 212080 KB Output is correct
9 Correct 201 ms 212080 KB Output is correct
10 Correct 192 ms 212080 KB Output is correct
11 Correct 178 ms 212080 KB Output is correct
12 Correct 197 ms 212148 KB Output is correct
13 Correct 202 ms 212148 KB Output is correct
14 Correct 175 ms 212148 KB Output is correct
15 Correct 191 ms 212148 KB Output is correct
16 Correct 193 ms 212148 KB Output is correct
17 Correct 204 ms 212148 KB Output is correct
18 Correct 210 ms 212148 KB Output is correct
19 Correct 204 ms 212148 KB Output is correct
20 Correct 184 ms 212148 KB Output is correct
21 Correct 202 ms 212148 KB Output is correct
22 Correct 203 ms 212148 KB Output is correct
23 Correct 201 ms 212232 KB Output is correct
24 Correct 198 ms 212232 KB Output is correct
25 Correct 192 ms 212232 KB Output is correct
26 Correct 203 ms 212232 KB Output is correct
27 Incorrect 201 ms 212236 KB Output isn't correct
28 Halted 0 ms 0 KB -