Submission #486778

# Submission time Handle Problem Language Result Execution time Memory
486778 2021-11-12T18:29:43 Z socho Dango Maker (JOI18_dango_maker) C++14
100 / 100
422 ms 79812 KB
/*
	Going for full
*/
#include <bits/stdc++.h>
using namespace std;
void fast() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
}
void ran() {
	srand(chrono::steady_clock::now().time_since_epoch().count());
}
long long get_rand() {
	long long a = rand();
	long long b = rand();
	return a * (RAND_MAX + 1ll) + b;
}
void usaco() {
	freopen("problem.in", "r", stdin); 
	freopen("problem.out", "w", stdout);
}
template<typename T>
using min_pq = priority_queue<T, vector<T>, greater<T>>;
#define endl '\n'
// #define double long double
// #define int long long
// const int MOD = 1000 * 1000 * 1000 + 7;
// const int MOD = 998244353;
// #define cerr if(0) cerr
#define debug(x) cerr << #x << ": " << x << endl;

const int MXN = 3005;
int n, m;
int grid[MXN][MXN];
int can[MXN][MXN];
int dp[MXN][3];
 
signed main() {
 
	cin >> n >> m;
	for (int i=1; i<=n; i++) {
		string s;
		cin >> s;
		for (int j=1; j<=m; j++) {
			if (s[j-1] == 'R') grid[i][j] = 1;
			if (s[j-1] == 'G') grid[i][j] = 2;
			if (s[j-1] == 'W') grid[i][j] = 3;
		}
	}
	
	
	for (int i=1; i<=n; i++) {
		for (int j=1; j<=m; j++) {
			if (grid[i][j] == 2) {
				if (grid[i-1][j] == 1 && grid[i+1][j] == 3) {
					can[i][j] += 1;
				}
				if (grid[i][j-1] == 1 && grid[i][j+1] == 3) {
					can[i][j] += 2;
				}
			}
		}
	}
	
	int ans = 0;
	
	for (int diag=2; diag<=n+m; diag++) {
		dp[0][0] = dp[0][1] = dp[0][2] = 0;
		int here = 0;
		vector<int> vc;
		vc.push_back(-1);
		for (int i=1; i<=n; i++) {
			int j = diag - i;
			if (j >= 1 && j <= m) {
				vc.push_back(can[i][j]);
			}
		}
		for (int i=1; i<vc.size(); i++) {
			dp[i][0] = dp[i][1] = dp[i][2] = 0;
			dp[i][0] = max(max(dp[i-1][0], dp[i-1][1]), dp[i-1][2]);
			if (vc[i] & 1) {
				dp[i][1] = max(dp[i][1], 1 + max(dp[i-1][0], dp[i-1][1]));
			}
			if (vc[i] & 2) {
				dp[i][2] = max(dp[i][2], 1 + max(dp[i-1][0], dp[i-1][2]));
			}
			here = max(here, max(max(dp[i][0], dp[i][1]), dp[i][2]));
		}
		ans += here;
	}
	
	cout << ans << endl;
	
}

Compilation message

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:77:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |   for (int i=1; i<vc.size(); i++) {
      |                 ~^~~~~~~~~~
dango_maker.cpp: In function 'void usaco()':
dango_maker.cpp:18:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  freopen("problem.in", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:19:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  freopen("problem.out", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 0 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 0 ms 296 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 0 ms 332 KB Output is correct
41 Correct 0 ms 332 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 0 ms 332 KB Output is correct
44 Correct 0 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 0 ms 332 KB Output is correct
49 Correct 1 ms 304 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Correct 0 ms 332 KB Output is correct
52 Correct 0 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 0 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 0 ms 296 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 0 ms 332 KB Output is correct
41 Correct 0 ms 332 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 0 ms 332 KB Output is correct
44 Correct 0 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 0 ms 332 KB Output is correct
49 Correct 1 ms 304 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Correct 0 ms 332 KB Output is correct
52 Correct 0 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 12 ms 12748 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 10 ms 15448 KB Output is correct
58 Correct 49 ms 16956 KB Output is correct
59 Correct 419 ms 79676 KB Output is correct
60 Correct 422 ms 79752 KB Output is correct
61 Correct 389 ms 79708 KB Output is correct
62 Correct 1 ms 332 KB Output is correct
63 Correct 380 ms 79336 KB Output is correct
64 Correct 322 ms 79792 KB Output is correct
65 Correct 317 ms 79812 KB Output is correct
66 Correct 285 ms 79616 KB Output is correct
67 Correct 307 ms 60192 KB Output is correct
68 Correct 303 ms 60272 KB Output is correct
69 Correct 322 ms 65856 KB Output is correct
70 Correct 37 ms 17092 KB Output is correct
71 Correct 39 ms 17224 KB Output is correct
72 Correct 39 ms 17172 KB Output is correct
73 Correct 37 ms 16996 KB Output is correct
74 Correct 37 ms 17044 KB Output is correct
75 Correct 37 ms 17120 KB Output is correct
76 Correct 39 ms 16992 KB Output is correct
77 Correct 36 ms 17092 KB Output is correct
78 Correct 37 ms 17020 KB Output is correct
79 Correct 39 ms 17096 KB Output is correct
80 Correct 38 ms 17172 KB Output is correct
81 Correct 49 ms 17040 KB Output is correct
82 Correct 37 ms 17092 KB Output is correct
83 Correct 36 ms 17040 KB Output is correct
84 Correct 36 ms 17080 KB Output is correct
85 Correct 37 ms 17100 KB Output is correct
86 Correct 37 ms 17008 KB Output is correct
87 Correct 36 ms 17100 KB Output is correct
88 Correct 36 ms 17100 KB Output is correct
89 Correct 37 ms 17076 KB Output is correct
90 Correct 40 ms 17004 KB Output is correct