oj.uz

Submission #483947

# Submission time Handle Problem Language Result Execution time Memory
483947 2021-11-01T14:19:13 Z ymm Dango Maker (JOI18_dango_maker) C++17
100 / 100
 1255 ms 137148 KB 
///
///   You fell for it, fool!
///   Thunder Cross Split Attack!
///

#include <bits/stdc++.h>
#define Loop(x,l,r) for(ll x = ll(l); x < ll(r); ++x)
typedef long long ll;
typedef std::pair<int,int> pii;
using namespace std;

const int N = 3009;
int ch, cv;
char a[N][N];
int n, m;
int mch[N*N];
pair<int,int> par[N*N];
bitset<N*N> vis;
vector<int> dard;

bool gdh(int i, int j){return 0 <= i && i < n && 0 <= j && j+3 <= m && a[i][j] == 'R' && a[i][j+1] == 'G' && a[i][j+2] == 'W';}
bool gdv(int i, int j){return 0 <= i && i+2 <= n && 0 <= j && j < m && a[i][j] == 'R' && a[i+1][j] == 'G' && a[i+2][j] == 'W';}

bool bfs(int s)
{
	par[s] = {-1, -1};
	vector<int> q;
	q.push_back(s); vis[s] = 1;
	for(int i = 0; i < q.size(); ++i)
	{
		auto v = q[i];
		Loop(i,0,3)
		{
			if(!gdv(v/N-i,v%N+i)) continue;
			int u = v-i*(N-1);
			if(mch[u] == -1){
				while(v != -1){
					mch[u] = v;
					u = par[v].second;
					v = par[v].first;
				}
				for(int z : q) vis[z] = 0;
				return 1;
			}
			if(vis[mch[u]]) continue;
			q.push_back(mch[u]);
			vis[mch[u]] = 1;
			par[mch[u]] = {v, u};
		}
	}
	return 0;
}

int main()
{
	ios::sync_with_stdio(false); cin.tie(0);
	cin >> n >> m;
	Loop(i,0,n) cin >> a[i];
	int ans = 0;
	Loop(i,0,n) Loop(j,0,m) {
		if(gdh(i,j)) dard.push_back(N*i+j);
		if(gdv(i,j)) ++ans;
	}
	ans += dard.size();
	srand(time(0));
	random_shuffle(dard.begin(), dard.end());
	memset(mch, -1, sizeof mch);
	for(int v : dard)
	{
		ans -= bfs(v);
	}
	cout << ans << '\n';
}

Compilation message

dango_maker.cpp: In function 'bool bfs(int)':
dango_maker.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(int i = 0; i < q.size(); ++i)
      |                 ~~^~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 35660 KB Output is correct
2 Correct 13 ms 35688 KB Output is correct
3 Correct 13 ms 35716 KB Output is correct
4 Correct 14 ms 35672 KB Output is correct
5 Correct 16 ms 35660 KB Output is correct
6 Correct 14 ms 35688 KB Output is correct
7 Correct 13 ms 35660 KB Output is correct
8 Correct 14 ms 35660 KB Output is correct
9 Correct 13 ms 35704 KB Output is correct
10 Correct 14 ms 35684 KB Output is correct
11 Correct 14 ms 35704 KB Output is correct
12 Correct 14 ms 35736 KB Output is correct
13 Correct 14 ms 35784 KB Output is correct
14 Correct 12 ms 35660 KB Output is correct
15 Correct 14 ms 35664 KB Output is correct
16 Correct 15 ms 35660 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 35660 KB Output is correct
2 Correct 13 ms 35688 KB Output is correct
3 Correct 13 ms 35716 KB Output is correct
4 Correct 14 ms 35672 KB Output is correct
5 Correct 16 ms 35660 KB Output is correct
6 Correct 14 ms 35688 KB Output is correct
7 Correct 13 ms 35660 KB Output is correct
8 Correct 14 ms 35660 KB Output is correct
9 Correct 13 ms 35704 KB Output is correct
10 Correct 14 ms 35684 KB Output is correct
11 Correct 14 ms 35704 KB Output is correct
12 Correct 14 ms 35736 KB Output is correct
13 Correct 14 ms 35784 KB Output is correct
14 Correct 12 ms 35660 KB Output is correct
15 Correct 14 ms 35664 KB Output is correct
16 Correct 15 ms 35660 KB Output is correct
17 Correct 13 ms 35788 KB Output is correct
18 Correct 14 ms 35788 KB Output is correct
19 Correct 14 ms 35756 KB Output is correct
20 Correct 18 ms 35788 KB Output is correct
21 Correct 14 ms 35788 KB Output is correct
22 Correct 16 ms 35708 KB Output is correct
23 Correct 13 ms 35692 KB Output is correct
24 Correct 13 ms 35788 KB Output is correct
25 Correct 13 ms 35788 KB Output is correct
26 Correct 14 ms 35644 KB Output is correct
27 Correct 13 ms 35748 KB Output is correct
28 Correct 14 ms 35744 KB Output is correct
29 Correct 14 ms 35840 KB Output is correct
30 Correct 14 ms 35696 KB Output is correct
31 Correct 14 ms 35788 KB Output is correct
32 Correct 17 ms 35788 KB Output is correct
33 Correct 16 ms 35840 KB Output is correct
34 Correct 14 ms 35780 KB Output is correct
35 Correct 15 ms 35788 KB Output is correct
36 Correct 13 ms 35788 KB Output is correct
37 Correct 13 ms 35808 KB Output is correct
38 Correct 15 ms 35788 KB Output is correct
39 Correct 14 ms 35756 KB Output is correct
40 Correct 13 ms 35788 KB Output is correct
41 Correct 13 ms 35788 KB Output is correct
42 Correct 13 ms 35788 KB Output is correct
43 Correct 14 ms 35788 KB Output is correct
44 Correct 13 ms 35788 KB Output is correct
45 Correct 13 ms 35736 KB Output is correct
46 Correct 14 ms 35788 KB Output is correct
47 Correct 14 ms 35788 KB Output is correct
48 Correct 15 ms 35792 KB Output is correct
49 Correct 14 ms 35788 KB Output is correct
50 Correct 13 ms 35788 KB Output is correct
51 Correct 14 ms 35700 KB Output is correct
52 Correct 13 ms 35724 KB Output is correct
53 Correct 14 ms 35788 KB Output is correct

Subtask #3
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 35660 KB Output is correct
2 Correct 13 ms 35688 KB Output is correct
3 Correct 13 ms 35716 KB Output is correct
4 Correct 14 ms 35672 KB Output is correct
5 Correct 16 ms 35660 KB Output is correct
6 Correct 14 ms 35688 KB Output is correct
7 Correct 13 ms 35660 KB Output is correct
8 Correct 14 ms 35660 KB Output is correct
9 Correct 13 ms 35704 KB Output is correct
10 Correct 14 ms 35684 KB Output is correct
11 Correct 14 ms 35704 KB Output is correct
12 Correct 14 ms 35736 KB Output is correct
13 Correct 14 ms 35784 KB Output is correct
14 Correct 12 ms 35660 KB Output is correct
15 Correct 14 ms 35664 KB Output is correct
16 Correct 15 ms 35660 KB Output is correct
17 Correct 13 ms 35788 KB Output is correct
18 Correct 14 ms 35788 KB Output is correct
19 Correct 14 ms 35756 KB Output is correct
20 Correct 18 ms 35788 KB Output is correct
21 Correct 14 ms 35788 KB Output is correct
22 Correct 16 ms 35708 KB Output is correct
23 Correct 13 ms 35692 KB Output is correct
24 Correct 13 ms 35788 KB Output is correct
25 Correct 13 ms 35788 KB Output is correct
26 Correct 14 ms 35644 KB Output is correct
27 Correct 13 ms 35748 KB Output is correct
28 Correct 14 ms 35744 KB Output is correct
29 Correct 14 ms 35840 KB Output is correct
30 Correct 14 ms 35696 KB Output is correct
31 Correct 14 ms 35788 KB Output is correct
32 Correct 17 ms 35788 KB Output is correct
33 Correct 16 ms 35840 KB Output is correct
34 Correct 14 ms 35780 KB Output is correct
35 Correct 15 ms 35788 KB Output is correct
36 Correct 13 ms 35788 KB Output is correct
37 Correct 13 ms 35808 KB Output is correct
38 Correct 15 ms 35788 KB Output is correct
39 Correct 14 ms 35756 KB Output is correct
40 Correct 13 ms 35788 KB Output is correct
41 Correct 13 ms 35788 KB Output is correct
42 Correct 13 ms 35788 KB Output is correct
43 Correct 14 ms 35788 KB Output is correct
44 Correct 13 ms 35788 KB Output is correct
45 Correct 13 ms 35736 KB Output is correct
46 Correct 14 ms 35788 KB Output is correct
47 Correct 14 ms 35788 KB Output is correct
48 Correct 15 ms 35792 KB Output is correct
49 Correct 14 ms 35788 KB Output is correct
50 Correct 13 ms 35788 KB Output is correct
51 Correct 14 ms 35700 KB Output is correct
52 Correct 13 ms 35724 KB Output is correct
53 Correct 14 ms 35788 KB Output is correct
54 Correct 14 ms 35708 KB Output is correct
55 Correct 17 ms 44488 KB Output is correct
56 Correct 14 ms 35844 KB Output is correct
57 Correct 18 ms 47396 KB Output is correct
58 Correct 38 ms 50840 KB Output is correct
59 Correct 246 ms 117752 KB Output is correct
60 Correct 233 ms 117860 KB Output is correct
61 Correct 228 ms 117736 KB Output is correct
62 Correct 13 ms 35740 KB Output is correct
63 Correct 220 ms 117768 KB Output is correct
64 Correct 1149 ms 137148 KB Output is correct
65 Correct 1184 ms 136952 KB Output is correct
66 Correct 1255 ms 136976 KB Output is correct
67 Correct 74 ms 53316 KB Output is correct
68 Correct 75 ms 53648 KB Output is correct
69 Correct 82 ms 65220 KB Output is correct
70 Correct 97 ms 53176 KB Output is correct
71 Correct 102 ms 53304 KB Output is correct
72 Correct 96 ms 53232 KB Output is correct
73 Correct 96 ms 53176 KB Output is correct
74 Correct 104 ms 53184 KB Output is correct
75 Correct 104 ms 53244 KB Output is correct
76 Correct 121 ms 53252 KB Output is correct
77 Correct 97 ms 53208 KB Output is correct
78 Correct 104 ms 53236 KB Output is correct
79 Correct 98 ms 53220 KB Output is correct
80 Correct 100 ms 53184 KB Output is correct
81 Correct 100 ms 53248 KB Output is correct
82 Correct 102 ms 53184 KB Output is correct
83 Correct 133 ms 53300 KB Output is correct
84 Correct 102 ms 53196 KB Output is correct
85 Correct 100 ms 53180 KB Output is correct
86 Correct 106 ms 53176 KB Output is correct
87 Correct 103 ms 53188 KB Output is correct
88 Correct 105 ms 53176 KB Output is correct
89 Correct 101 ms 53180 KB Output is correct
90 Correct 102 ms 53176 KB Output is correct