oj.uz

Submission #336527

# Submission time Handle Problem Language Result Execution time Memory
336527 2020-12-15T14:06:12 Z Galebickosikasa Dango Maker (JOI18_dango_maker) C++17
33 / 100
 2000 ms 91628 KB 
// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.1,sse4.2,popcnt,abm,mmx,avx")
// #pragma comment(linker, "/stack:200000000"]
 
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <unordered_set>
#include <unordered_map>
#include <set>
#include <map>
#include <queue>
#include <deque>
#include <bitset>
#include <stack>
#include <random>
#include <fstream>
#include <sstream>
#include <chrono>

#define fi first
#define se second
#define pb push_back
#define ll long long
#define ld long double
#define hm unordered_map 
#define pii pair<int, int>
#define sz(a) (int)a.size()
#define all(a) a.begin(), a.end()
#define cinv(v) for (auto& x: v) cin >> x
#define fr(i, n) for (int i = 0; i < n; ++i)
#define fl(i, l, n) for (int i = l; i < n; ++i)

// #define int ll

template <typename T1, typename T2> inline bool chkmin(T1 &x, const T2 &y) {if (x > y) {x = y; return 1;} return 0;}
template <typename T1, typename T2> inline bool chkmax(T1 &x, const T2 &y) {if (x < y) {x = y; return 1;} return 0;}

using namespace std;

#ifdef LOCAL
	#define dbg(x) cerr << #x << " : " << x << '\n'
	const int maxn = 20;
#else 
	#define dbg(x)
	const int maxn = 2e5 + 20;
#endif

//tg: @galebickosikasa
 
ostream& operator << (ostream& out, const pii& v) {
	out << v.fi << ", " << v.se;
	return out;
}

template<typename T> ostream& operator << (ostream& out, const vector<T>& v) {
    for (auto& x: v) out << x << " ";
    return out;
}

istream& operator >> (istream& in, pii& a) {
	in >> a.fi >> a.se;
	return in;
}

const ll inf = (ll) 2e9;
const ld pi = asin (1) * 2;
const ld eps = 1e-8;
const ll mod = (ll)1e9 + 7;
const ll ns = 97;

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

char goo[3000][3000];
int a[3000][3000];
int d[1000 * 3000 + 5];

struct edge {
	int to, f, c;
};

vector<int> g[1000 * 3000 + 10];
vector<edge> edges;

inline int bfs (int st, int fin) {
	for (int i = 0; i <= fin; ++i) d[i] = inf;
	d[st] = 0;
	queue<int> a;
	a.push (st);
	while (!a.empty ()) {
		int v = a.front ();
		a.pop ();
		for (auto& u: g[v]) {
			if (d[edges[u].to] == inf && edges[u].c - edges[u].f > 0) {
				d[edges[u].to] = d[v] + 1;
				a.push (edges[u].to);
			}
		}
	}
	return d[fin] < inf;
}

int dfs (int v, int t, int c = inf) {
	if (v == t) return c;
	for (auto& u: g[v]) {
		auto& e = edges[u];
		if (d[e.to] == d[v] + 1 && e.c - e.f > 0) {
			int delta = dfs (e.to, t, min (c, e.c - e.f));
			if (delta > 0) {
				auto& _e = edges[u ^ 1];
				e.f += delta;
				_e.f -= delta;
				return delta;
			}
		}
	}
	return 0;
}

signed main () {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
	int n, m;
	cin >> n >> m;
	for (int i = 0; i < n; ++i) for (int j = 0; j < m; ++j) {
		cin >> goo[i][j];
	}
	for (int i = 0; i < n; ++i) for (int j = 0; j < m; ++j) a[i][j] = -1;
	int c = 0;
	for (int i = 0; i < n; ++i) {
		for (int j = 2; j < m; ++j) {
			if (goo[i][j - 2] == 'R' && goo[i][j - 1] == 'G' && goo[i][j] == 'W') {
				a[i][j - 2] = a[i][j - 1] = a[i][j] = c++;
			}
		}
	}
	int last = c;
	for (int i = 2; i < n; ++i) {
		for (int j = 0; j < m; ++j) {
			if (goo[i - 2][j] == 'R' && goo[i - 1][j] == 'G' && goo[i][j] == 'W') {
				for (int k = i - 2; k <= i; ++k) {
					if (a[k][j] != -1) {
						int u = c, v = a[k][j];
						dbg (v);
						dbg (u);
						g[v].pb (sz (edges));
						edges.pb ({u, 0, 1});
						g[u].pb (sz (edges));
						edges.pb ({v, 0, 0});
					}
				}
				++c;
			}
		}
	}
	int st = c, fin = st + 1;
	dbg ("first");
	for (int i = 0; i < last; ++i) {
		dbg (i);
		g[st].pb (sz (edges));
		edges.pb ({i, 0, 1});
		g[i].pb (sz (edges));
		edges.pb ({st, 0, 0});
	}
	dbg ("second");
	for (int i = last; i < c; ++i) {
		dbg (i);
		g[i].pb (sz (edges));
		edges.pb ({fin, 0, 1});
		g[fin].pb (sz (edges));
		edges.pb ({i, 0, 0});
	}
	while (bfs (st, fin)) {
		while (dfs (st, fin));
	}
	int res = 0;
	for (auto& x: g[st]) {
		res += edges[x].f;
	}
	dbg (res);
	cout << c - res << '\n';








}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 70764 KB Output is correct
2 Correct 49 ms 70764 KB Output is correct
3 Correct 48 ms 70764 KB Output is correct
4 Correct 48 ms 70764 KB Output is correct
5 Correct 48 ms 70892 KB Output is correct
6 Correct 50 ms 70892 KB Output is correct
7 Correct 48 ms 70892 KB Output is correct
8 Correct 48 ms 70892 KB Output is correct
9 Correct 48 ms 70764 KB Output is correct
10 Correct 48 ms 70892 KB Output is correct
11 Correct 48 ms 70892 KB Output is correct
12 Correct 49 ms 70892 KB Output is correct
13 Correct 48 ms 70892 KB Output is correct
14 Correct 48 ms 70892 KB Output is correct
15 Correct 49 ms 70892 KB Output is correct
16 Correct 48 ms 70892 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 70764 KB Output is correct
2 Correct 49 ms 70764 KB Output is correct
3 Correct 48 ms 70764 KB Output is correct
4 Correct 48 ms 70764 KB Output is correct
5 Correct 48 ms 70892 KB Output is correct
6 Correct 50 ms 70892 KB Output is correct
7 Correct 48 ms 70892 KB Output is correct
8 Correct 48 ms 70892 KB Output is correct
9 Correct 48 ms 70764 KB Output is correct
10 Correct 48 ms 70892 KB Output is correct
11 Correct 48 ms 70892 KB Output is correct
12 Correct 49 ms 70892 KB Output is correct
13 Correct 48 ms 70892 KB Output is correct
14 Correct 48 ms 70892 KB Output is correct
15 Correct 49 ms 70892 KB Output is correct
16 Correct 48 ms 70892 KB Output is correct
17 Correct 49 ms 70892 KB Output is correct
18 Correct 59 ms 70892 KB Output is correct
19 Correct 54 ms 70892 KB Output is correct
20 Correct 49 ms 71020 KB Output is correct
21 Correct 48 ms 70892 KB Output is correct
22 Correct 49 ms 71020 KB Output is correct
23 Correct 49 ms 70892 KB Output is correct
24 Correct 48 ms 70892 KB Output is correct
25 Correct 50 ms 70892 KB Output is correct
26 Correct 47 ms 70892 KB Output is correct
27 Correct 49 ms 70892 KB Output is correct
28 Correct 48 ms 70892 KB Output is correct
29 Correct 49 ms 70892 KB Output is correct
30 Correct 48 ms 70892 KB Output is correct
31 Correct 49 ms 70892 KB Output is correct
32 Correct 48 ms 70892 KB Output is correct
33 Correct 48 ms 71020 KB Output is correct
34 Correct 49 ms 71020 KB Output is correct
35 Correct 48 ms 70892 KB Output is correct
36 Correct 48 ms 70892 KB Output is correct
37 Correct 48 ms 70892 KB Output is correct
38 Correct 48 ms 70892 KB Output is correct
39 Correct 49 ms 70892 KB Output is correct
40 Correct 48 ms 70892 KB Output is correct
41 Correct 48 ms 70892 KB Output is correct
42 Correct 48 ms 70892 KB Output is correct
43 Correct 48 ms 70892 KB Output is correct
44 Correct 48 ms 70912 KB Output is correct
45 Correct 49 ms 70892 KB Output is correct
46 Correct 48 ms 70892 KB Output is correct
47 Correct 49 ms 70848 KB Output is correct
48 Correct 49 ms 70892 KB Output is correct
49 Correct 48 ms 70892 KB Output is correct
50 Correct 48 ms 70892 KB Output is correct
51 Correct 48 ms 70892 KB Output is correct
52 Correct 49 ms 70892 KB Output is correct
53 Correct 48 ms 70892 KB Output is correct

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 70764 KB Output is correct
2 Correct 49 ms 70764 KB Output is correct
3 Correct 48 ms 70764 KB Output is correct
4 Correct 48 ms 70764 KB Output is correct
5 Correct 48 ms 70892 KB Output is correct
6 Correct 50 ms 70892 KB Output is correct
7 Correct 48 ms 70892 KB Output is correct
8 Correct 48 ms 70892 KB Output is correct
9 Correct 48 ms 70764 KB Output is correct
10 Correct 48 ms 70892 KB Output is correct
11 Correct 48 ms 70892 KB Output is correct
12 Correct 49 ms 70892 KB Output is correct
13 Correct 48 ms 70892 KB Output is correct
14 Correct 48 ms 70892 KB Output is correct
15 Correct 49 ms 70892 KB Output is correct
16 Correct 48 ms 70892 KB Output is correct
17 Correct 49 ms 70892 KB Output is correct
18 Correct 59 ms 70892 KB Output is correct
19 Correct 54 ms 70892 KB Output is correct
20 Correct 49 ms 71020 KB Output is correct
21 Correct 48 ms 70892 KB Output is correct
22 Correct 49 ms 71020 KB Output is correct
23 Correct 49 ms 70892 KB Output is correct
24 Correct 48 ms 70892 KB Output is correct
25 Correct 50 ms 70892 KB Output is correct
26 Correct 47 ms 70892 KB Output is correct
27 Correct 49 ms 70892 KB Output is correct
28 Correct 48 ms 70892 KB Output is correct
29 Correct 49 ms 70892 KB Output is correct
30 Correct 48 ms 70892 KB Output is correct
31 Correct 49 ms 70892 KB Output is correct
32 Correct 48 ms 70892 KB Output is correct
33 Correct 48 ms 71020 KB Output is correct
34 Correct 49 ms 71020 KB Output is correct
35 Correct 48 ms 70892 KB Output is correct
36 Correct 48 ms 70892 KB Output is correct
37 Correct 48 ms 70892 KB Output is correct
38 Correct 48 ms 70892 KB Output is correct
39 Correct 49 ms 70892 KB Output is correct
40 Correct 48 ms 70892 KB Output is correct
41 Correct 48 ms 70892 KB Output is correct
42 Correct 48 ms 70892 KB Output is correct
43 Correct 48 ms 70892 KB Output is correct
44 Correct 48 ms 70912 KB Output is correct
45 Correct 49 ms 70892 KB Output is correct
46 Correct 48 ms 70892 KB Output is correct
47 Correct 49 ms 70848 KB Output is correct
48 Correct 49 ms 70892 KB Output is correct
49 Correct 48 ms 70892 KB Output is correct
50 Correct 48 ms 70892 KB Output is correct
51 Correct 48 ms 70892 KB Output is correct
52 Correct 49 ms 70892 KB Output is correct
53 Correct 48 ms 70892 KB Output is correct
54 Correct 48 ms 70892 KB Output is correct
55 Correct 59 ms 91628 KB Output is correct
56 Correct 54 ms 71148 KB Output is correct
57 Correct 62 ms 84972 KB Output is correct
58 Execution timed out 2084 ms 87324 KB Time limit exceeded
59 Halted 0 ms 0 KB -