oj.uz

Submission #336524

# Submission time Handle Problem Language Result Execution time Memory
336524 2020-12-15T14:02:56 Z Galebickosikasa Dango Maker (JOI18_dango_maker) C++17
33 / 100
 386 ms 262148 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[3000 * 3000 + 5], it[3000 * 3000 + 5];

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

vector<int> g[3000 * 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;
	while (it[v] < sz (g[v])) {
		auto& e = edges[g[v][it[v]]];
		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[g[v][it[v]] ^ 1];
				e.f += delta;
				_e.f -= delta;
				return delta;
			}
		}
		++it[v];
	}
	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));
		for (int i = 0; i <= fin; ++i) it[i] = 0;
	}
	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 128 ms 211692 KB Output is correct
2 Correct 132 ms 211692 KB Output is correct
3 Correct 140 ms 211692 KB Output is correct
4 Correct 143 ms 211692 KB Output is correct
5 Correct 138 ms 211692 KB Output is correct
6 Correct 137 ms 211948 KB Output is correct
7 Correct 137 ms 211692 KB Output is correct
8 Correct 140 ms 211872 KB Output is correct
9 Correct 140 ms 211692 KB Output is correct
10 Correct 139 ms 211820 KB Output is correct
11 Correct 140 ms 211820 KB Output is correct
12 Correct 138 ms 211692 KB Output is correct
13 Correct 138 ms 211820 KB Output is correct
14 Correct 140 ms 211692 KB Output is correct
15 Correct 137 ms 211692 KB Output is correct
16 Correct 138 ms 211692 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 128 ms 211692 KB Output is correct
2 Correct 132 ms 211692 KB Output is correct
3 Correct 140 ms 211692 KB Output is correct
4 Correct 143 ms 211692 KB Output is correct
5 Correct 138 ms 211692 KB Output is correct
6 Correct 137 ms 211948 KB Output is correct
7 Correct 137 ms 211692 KB Output is correct
8 Correct 140 ms 211872 KB Output is correct
9 Correct 140 ms 211692 KB Output is correct
10 Correct 139 ms 211820 KB Output is correct
11 Correct 140 ms 211820 KB Output is correct
12 Correct 138 ms 211692 KB Output is correct
13 Correct 138 ms 211820 KB Output is correct
14 Correct 140 ms 211692 KB Output is correct
15 Correct 137 ms 211692 KB Output is correct
16 Correct 138 ms 211692 KB Output is correct
17 Correct 138 ms 211692 KB Output is correct
18 Correct 139 ms 211820 KB Output is correct
19 Correct 138 ms 211820 KB Output is correct
20 Correct 140 ms 211820 KB Output is correct
21 Correct 138 ms 211820 KB Output is correct
22 Correct 136 ms 211820 KB Output is correct
23 Correct 140 ms 211820 KB Output is correct
24 Correct 138 ms 211820 KB Output is correct
25 Correct 137 ms 211820 KB Output is correct
26 Correct 140 ms 211692 KB Output is correct
27 Correct 141 ms 211820 KB Output is correct
28 Correct 136 ms 211820 KB Output is correct
29 Correct 141 ms 211948 KB Output is correct
30 Correct 137 ms 211820 KB Output is correct
31 Correct 140 ms 211820 KB Output is correct
32 Correct 139 ms 211820 KB Output is correct
33 Correct 137 ms 211820 KB Output is correct
34 Correct 137 ms 211820 KB Output is correct
35 Correct 138 ms 211820 KB Output is correct
36 Correct 138 ms 211820 KB Output is correct
37 Correct 139 ms 211820 KB Output is correct
38 Correct 142 ms 211820 KB Output is correct
39 Correct 138 ms 211820 KB Output is correct
40 Correct 138 ms 211820 KB Output is correct
41 Correct 139 ms 211820 KB Output is correct
42 Correct 138 ms 211948 KB Output is correct
43 Correct 137 ms 211820 KB Output is correct
44 Correct 138 ms 211868 KB Output is correct
45 Correct 138 ms 211840 KB Output is correct
46 Correct 140 ms 211820 KB Output is correct
47 Correct 138 ms 211820 KB Output is correct
48 Correct 136 ms 211820 KB Output is correct
49 Correct 139 ms 211928 KB Output is correct
50 Correct 138 ms 211820 KB Output is correct
51 Correct 137 ms 211820 KB Output is correct
52 Correct 138 ms 211820 KB Output is correct
53 Correct 135 ms 211776 KB Output is correct

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 128 ms 211692 KB Output is correct
2 Correct 132 ms 211692 KB Output is correct
3 Correct 140 ms 211692 KB Output is correct
4 Correct 143 ms 211692 KB Output is correct
5 Correct 138 ms 211692 KB Output is correct
6 Correct 137 ms 211948 KB Output is correct
7 Correct 137 ms 211692 KB Output is correct
8 Correct 140 ms 211872 KB Output is correct
9 Correct 140 ms 211692 KB Output is correct
10 Correct 139 ms 211820 KB Output is correct
11 Correct 140 ms 211820 KB Output is correct
12 Correct 138 ms 211692 KB Output is correct
13 Correct 138 ms 211820 KB Output is correct
14 Correct 140 ms 211692 KB Output is correct
15 Correct 137 ms 211692 KB Output is correct
16 Correct 138 ms 211692 KB Output is correct
17 Correct 138 ms 211692 KB Output is correct
18 Correct 139 ms 211820 KB Output is correct
19 Correct 138 ms 211820 KB Output is correct
20 Correct 140 ms 211820 KB Output is correct
21 Correct 138 ms 211820 KB Output is correct
22 Correct 136 ms 211820 KB Output is correct
23 Correct 140 ms 211820 KB Output is correct
24 Correct 138 ms 211820 KB Output is correct
25 Correct 137 ms 211820 KB Output is correct
26 Correct 140 ms 211692 KB Output is correct
27 Correct 141 ms 211820 KB Output is correct
28 Correct 136 ms 211820 KB Output is correct
29 Correct 141 ms 211948 KB Output is correct
30 Correct 137 ms 211820 KB Output is correct
31 Correct 140 ms 211820 KB Output is correct
32 Correct 139 ms 211820 KB Output is correct
33 Correct 137 ms 211820 KB Output is correct
34 Correct 137 ms 211820 KB Output is correct
35 Correct 138 ms 211820 KB Output is correct
36 Correct 138 ms 211820 KB Output is correct
37 Correct 139 ms 211820 KB Output is correct
38 Correct 142 ms 211820 KB Output is correct
39 Correct 138 ms 211820 KB Output is correct
40 Correct 138 ms 211820 KB Output is correct
41 Correct 139 ms 211820 KB Output is correct
42 Correct 138 ms 211948 KB Output is correct
43 Correct 137 ms 211820 KB Output is correct
44 Correct 138 ms 211868 KB Output is correct
45 Correct 138 ms 211840 KB Output is correct
46 Correct 140 ms 211820 KB Output is correct
47 Correct 138 ms 211820 KB Output is correct
48 Correct 136 ms 211820 KB Output is correct
49 Correct 139 ms 211928 KB Output is correct
50 Correct 138 ms 211820 KB Output is correct
51 Correct 137 ms 211820 KB Output is correct
52 Correct 138 ms 211820 KB Output is correct
53 Correct 135 ms 211776 KB Output is correct
54 Correct 137 ms 211692 KB Output is correct
55 Correct 148 ms 232588 KB Output is correct
56 Correct 140 ms 212076 KB Output is correct
57 Correct 144 ms 226028 KB Output is correct
58 Correct 190 ms 229532 KB Output is correct
59 Runtime error 386 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
60 Halted 0 ms 0 KB -