oj.uz

Submission #208836

# Submission time Handle Problem Language Result Execution time Memory
208836 2020-03-12T09:36:15 Z Siberian Dango Maker (JOI18_dango_maker) C++14
33 / 100
 517 ms 262144 KB 
#pragma GCC optimize("no-stack-protector")
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
#define all(x) x.begin(), x.end()

template <typename T1, typename T2> inline void chkmin(T1 &x, const T2 & y) {if (x > y) x = y;}
template <typename T1, typename T2> inline void chkmax(T1 &x, const T2 & y) {if (x < y) x = y;}

const int MAXN = 3100;
char table[MAXN][MAXN];
vector<int> g[MAXN * MAXN];
int n, m;

void read() {
	cin >> n >> m;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cin >> table[i][j];
		}
	}
}

bool check_right(int i, int j) {
	return j >= 0 && j + 2 < m && i >= 0 && i < n && table[i][j] == 'R' && table[i][j + 1] == 'G' && table[i][j + 2] == 'W';
}

bool check_down(int i, int j) {
	return j >= 0 && j < m && i >= 0 && i + 2 < n && table[i][j] == 'R' && table[i + 1][j] == 'G' && table[i + 2][j] == 'W';
}

int cnt;

void build() {
	cnt = 0;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			if (!check_down(i, j)) continue;
			if (check_right(i, j)) {
				g[i * m + j].push_back(i * m + j);
			}
			if(check_right(i + 1, j - 1)) {
				g[i * m + j].push_back((i + 1) * m + j - 1);
				//cout << "puhh" << endl;
			}
			if (check_right(i + 2, j - 2)) {
				g[i * m + j].push_back((i + 2) * m + j - 2);
				//cout << "puhh" << endl;
			}
		}
	}
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cnt += check_right(i, j);
			cnt += check_down(i, j);
		}
	}
}

int used[MAXN * MAXN];
int mt[MAXN * MAXN];

bool dfs(int v, int c) {
	if (used[v] == c) return false;
	used[v] = c;
	for (auto i : g[v]) {
		if (mt[i] == -1) {
			mt[i] = v;
			return true;
		}
	}

	for (auto i : g[v]) {
		if (dfs(mt[i], c)) {
			mt[i] = v;
			return true;
		}
	}
	return false;
} 

int ans;

void calc() {
	for (int i = 0; i < n * m; i++) {
		mt[i] = used[i] = -1;
	}
	int c = 0;
	for (int i = 0; i < n * m; i++) {
		dfs(i, c++);
	}
	ans = cnt;
	for (int i = 0; i < n * m; i++) {
		if (mt[i] != -1) {
			ans--;
		}
	}
}

void run() {
	build();
	calc();
}

void write() {
	cout << ans << endl;
}

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	read();
	run();
	write();
	return 0;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 151 ms 226040 KB Output is correct
2 Correct 153 ms 226040 KB Output is correct
3 Correct 154 ms 226040 KB Output is correct
4 Correct 153 ms 226040 KB Output is correct
5 Correct 152 ms 226040 KB Output is correct
6 Correct 161 ms 226040 KB Output is correct
7 Correct 150 ms 226040 KB Output is correct
8 Correct 150 ms 226168 KB Output is correct
9 Correct 154 ms 226040 KB Output is correct
10 Correct 149 ms 226040 KB Output is correct
11 Correct 157 ms 226168 KB Output is correct
12 Correct 153 ms 226040 KB Output is correct
13 Correct 154 ms 226040 KB Output is correct
14 Correct 151 ms 226040 KB Output is correct
15 Correct 152 ms 226128 KB Output is correct
16 Correct 154 ms 226040 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 151 ms 226040 KB Output is correct
2 Correct 153 ms 226040 KB Output is correct
3 Correct 154 ms 226040 KB Output is correct
4 Correct 153 ms 226040 KB Output is correct
5 Correct 152 ms 226040 KB Output is correct
6 Correct 161 ms 226040 KB Output is correct
7 Correct 150 ms 226040 KB Output is correct
8 Correct 150 ms 226168 KB Output is correct
9 Correct 154 ms 226040 KB Output is correct
10 Correct 149 ms 226040 KB Output is correct
11 Correct 157 ms 226168 KB Output is correct
12 Correct 153 ms 226040 KB Output is correct
13 Correct 154 ms 226040 KB Output is correct
14 Correct 151 ms 226040 KB Output is correct
15 Correct 152 ms 226128 KB Output is correct
16 Correct 154 ms 226040 KB Output is correct
17 Correct 160 ms 226040 KB Output is correct
18 Correct 152 ms 226040 KB Output is correct
19 Correct 149 ms 226088 KB Output is correct
20 Correct 154 ms 226040 KB Output is correct
21 Correct 154 ms 226040 KB Output is correct
22 Correct 153 ms 225996 KB Output is correct
23 Correct 151 ms 226040 KB Output is correct
24 Correct 152 ms 226040 KB Output is correct
25 Correct 154 ms 226040 KB Output is correct
26 Correct 156 ms 226040 KB Output is correct
27 Correct 159 ms 226028 KB Output is correct
28 Correct 153 ms 226040 KB Output is correct
29 Correct 156 ms 226040 KB Output is correct
30 Correct 152 ms 226040 KB Output is correct
31 Correct 153 ms 226040 KB Output is correct
32 Correct 150 ms 226040 KB Output is correct
33 Correct 152 ms 226040 KB Output is correct
34 Correct 163 ms 226016 KB Output is correct
35 Correct 151 ms 226040 KB Output is correct
36 Correct 157 ms 226040 KB Output is correct
37 Correct 167 ms 226108 KB Output is correct
38 Correct 152 ms 226044 KB Output is correct
39 Correct 160 ms 226040 KB Output is correct
40 Correct 151 ms 226040 KB Output is correct
41 Correct 172 ms 226040 KB Output is correct
42 Correct 151 ms 226040 KB Output is correct
43 Correct 154 ms 226040 KB Output is correct
44 Correct 154 ms 226168 KB Output is correct
45 Correct 158 ms 226040 KB Output is correct
46 Correct 153 ms 226040 KB Output is correct
47 Correct 155 ms 226044 KB Output is correct
48 Correct 151 ms 226040 KB Output is correct
49 Correct 152 ms 226040 KB Output is correct
50 Correct 150 ms 226040 KB Output is correct
51 Correct 152 ms 226040 KB Output is correct
52 Correct 150 ms 226296 KB Output is correct
53 Correct 154 ms 226040 KB Output is correct

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 151 ms 226040 KB Output is correct
2 Correct 153 ms 226040 KB Output is correct
3 Correct 154 ms 226040 KB Output is correct
4 Correct 153 ms 226040 KB Output is correct
5 Correct 152 ms 226040 KB Output is correct
6 Correct 161 ms 226040 KB Output is correct
7 Correct 150 ms 226040 KB Output is correct
8 Correct 150 ms 226168 KB Output is correct
9 Correct 154 ms 226040 KB Output is correct
10 Correct 149 ms 226040 KB Output is correct
11 Correct 157 ms 226168 KB Output is correct
12 Correct 153 ms 226040 KB Output is correct
13 Correct 154 ms 226040 KB Output is correct
14 Correct 151 ms 226040 KB Output is correct
15 Correct 152 ms 226128 KB Output is correct
16 Correct 154 ms 226040 KB Output is correct
17 Correct 160 ms 226040 KB Output is correct
18 Correct 152 ms 226040 KB Output is correct
19 Correct 149 ms 226088 KB Output is correct
20 Correct 154 ms 226040 KB Output is correct
21 Correct 154 ms 226040 KB Output is correct
22 Correct 153 ms 225996 KB Output is correct
23 Correct 151 ms 226040 KB Output is correct
24 Correct 152 ms 226040 KB Output is correct
25 Correct 154 ms 226040 KB Output is correct
26 Correct 156 ms 226040 KB Output is correct
27 Correct 159 ms 226028 KB Output is correct
28 Correct 153 ms 226040 KB Output is correct
29 Correct 156 ms 226040 KB Output is correct
30 Correct 152 ms 226040 KB Output is correct
31 Correct 153 ms 226040 KB Output is correct
32 Correct 150 ms 226040 KB Output is correct
33 Correct 152 ms 226040 KB Output is correct
34 Correct 163 ms 226016 KB Output is correct
35 Correct 151 ms 226040 KB Output is correct
36 Correct 157 ms 226040 KB Output is correct
37 Correct 167 ms 226108 KB Output is correct
38 Correct 152 ms 226044 KB Output is correct
39 Correct 160 ms 226040 KB Output is correct
40 Correct 151 ms 226040 KB Output is correct
41 Correct 172 ms 226040 KB Output is correct
42 Correct 151 ms 226040 KB Output is correct
43 Correct 154 ms 226040 KB Output is correct
44 Correct 154 ms 226168 KB Output is correct
45 Correct 158 ms 226040 KB Output is correct
46 Correct 153 ms 226040 KB Output is correct
47 Correct 155 ms 226044 KB Output is correct
48 Correct 151 ms 226040 KB Output is correct
49 Correct 152 ms 226040 KB Output is correct
50 Correct 150 ms 226040 KB Output is correct
51 Correct 152 ms 226040 KB Output is correct
52 Correct 150 ms 226296 KB Output is correct
53 Correct 154 ms 226040 KB Output is correct
54 Correct 152 ms 226040 KB Output is correct
55 Correct 154 ms 235260 KB Output is correct
56 Correct 157 ms 226168 KB Output is correct
57 Correct 159 ms 232256 KB Output is correct
58 Correct 205 ms 237304 KB Output is correct
59 Runtime error 517 ms 262144 KB Execution killed with signal 9 (could be triggered by violating memory limits)
60 Halted 0 ms 0 KB -