답안 #99494 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
99494	2019-03-04T11:07:23 Z	mzhao	Dango Maker (JOI18_dango_maker)	C++11	33 / 100	766 ms	263168 KB

dango_maker

#include <bits/stdc++.h>
using namespace std;

int R, C, G[3100][3100], ans;
bool f[3100][3100][2]; // 0 is horizontal, 1 is vertical
int id[3100][3100][2];

int nn;
vector<int> adj[9100100];

void dfs(int p, int x, int y, int z) {
	if (id[x][y][z]) {
		if (p) adj[p].push_back(id[x][y][z]);
		return;
	}
	int me = ++nn;
	id[x][y][z] = me;
	if (p) adj[p].push_back(id[x][y][z]);
	if (z) {
		if (f[x][y][0]) dfs(me, x, y, 0);
		if (y > 0 && f[x+1][y-1][0]) dfs(me, x+1, y-1, 0);
		if (y > 1 && f[x+2][y-2][0]) dfs(me, x+2, y-2, 0);
	} else {
		if (f[x][y][1]) dfs(me, x, y, 1);
		if (x > 0 && f[x-1][y+1][1]) dfs(me, x-1, y+1, 1);
		if (x > 1 && f[x-2][y+2][1]) dfs(me, x-2, y+2, 1);
	}
}

int dp[9999][4]; // left is first bit   right is second bit
bool vis[9100100];

void comp(int d, int l, int r) {
	vis[l] = vis[r] = 1;
	vector<int> ladj, radj;
	for (int i : adj[l]) if (!vis[i]) ladj.push_back(i);
	for (int i : adj[r]) if (!vis[i]) radj.push_back(i);
	if (!ladj.size() && !radj.size()) {
		if (l) {
			dp[d][0] = 0;
			dp[d][1] = 1;
		}
		if (r) {
			dp[d][2] = 1;
			dp[d][3] = 2;
		}
		return;
	}
	if (l && r && ladj.size() == 1 && radj.size() == 1) {
		comp(d+1, ladj[0], 0);
		dp[d][0] = max(dp[d+1][0], dp[d+1][1]);
		dp[d][1] = dp[d+1][0]+1;
		dp[d][2] = dp[d+1][0]+1;
		dp[d][3] = dp[d+1][0]+2;
	} else if (l && r && ladj.size() == 2 && radj.size() == 1) {
		if (ladj[0] == radj[0]) swap(ladj[0], ladj[1]);
		comp(d+1, ladj[0], ladj[1]);
		dp[d][0] = max(max(dp[d+1][0], dp[d+1][1]), max(dp[d+1][2], dp[d+1][3]));
		dp[d][1] = dp[d+1][0]+1;
		dp[d][2] = max(dp[d+1][0], dp[d+1][1])+1;
		dp[d][3] = dp[d+1][0]+2;
	} else if (l && r && radj.size() == 2 && ladj.size() == 1) {
		if (radj[1] == ladj[0]) swap(radj[0], radj[1]);
		comp(d+1, radj[0], radj[1]);
		dp[d][0] = max(max(dp[d+1][0], dp[d+1][1]), max(dp[d+1][2], dp[d+1][3]));
		dp[d][1] = max(dp[d+1][0], dp[d+1][2])+1;
		dp[d][2] = dp[d+1][0]+1;
		dp[d][3] = dp[d+1][0]+2;
	} else if (l && r && ladj.size() == 0) {
		comp(d+1, radj[0], 0);
		dp[d][0] = max(dp[d+1][0], dp[d+1][1]);
		dp[d][1] = dp[d][0]+1;
		dp[d][2] = dp[d+1][0]+1;
		dp[d][3] = dp[d+1][0]+2;
	} else if (l && r && radj.size() == 0) {
		comp(d+1, ladj[0], 0);
		dp[d][0] = max(dp[d+1][0], dp[d+1][1]);
		dp[d][1] = dp[d+1][0]+1;
		dp[d][2] = dp[d][0]+1;
		dp[d][3] = dp[d+1][0]+2;
	} else if (l && !r && ladj.size() == 2) {
		comp(d+1, ladj[0], ladj[1]);
		dp[d][0] = max(max(dp[d+1][0], dp[d+1][1]), max(dp[d+1][2], dp[d+1][3]));
		dp[d][1] = dp[d+1][0]+1;
	} else if (l && !r && ladj.size() == 1) {
		comp(d+1, ladj[0], 0);
		dp[d][0] = max(dp[d+1][0], dp[d+1][1]);
		dp[d][1] = dp[d+1][0]+1;
	}
}

int main() {
	scanf("%d%d", &R, &C);
	for (int i = 0; i < R; i++) {
		char A;
		scanf("\n");
		for (int j = 0; j < C; j++) {
			scanf("%c", &A);
			if (A == 'G') G[i][j] = 1;
			if (A == 'W') G[i][j] = 2;
		}
	}
	for (int i = 0; i < R; i++) {
		for (int j = 0; j < C; j++) {
			if (i < R-2 && G[i][j] == 0 && G[i+1][j] == 1 && G[i+2][j] == 2)
				f[i][j][1] = 1;
			if (j < C-2 && G[i][j] == 0 && G[i][j+1] == 1 && G[i][j+2] == 2)
				f[i][j][0] = 1;
		}
	}
	for (int i = 0; i < R; i++) {
		for (int j = 0; j < C; j++) {
			for (int k = 0; k < 2; k++) {
				if (!id[i][j][k] && f[i][j][k]) {
					int cur = nn+1;
					dfs(0, i, j, k);
					assert(nn < 3000000);
					comp(0, cur, 0);
					ans += max(dp[0][0], dp[0][1]);
				}
			}
		}
	}
	printf("%d\n", ans);
}

Compilation message

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:93:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &R, &C);
  ~~~~~^~~~~~~~~~~~~~~~
dango_maker.cpp:96:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("\n");
   ~~~~~^~~~~~
dango_maker.cpp:98:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%c", &A);
    ~~~~~^~~~~~~~~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	187 ms	214068 KB	Output is correct
2	Correct	188 ms	214180 KB	Output is correct
3	Correct	215 ms	213980 KB	Output is correct
4	Correct	230 ms	214012 KB	Output is correct
5	Correct	196 ms	214008 KB	Output is correct
6	Correct	187 ms	214008 KB	Output is correct
7	Correct	192 ms	214148 KB	Output is correct
8	Correct	215 ms	214124 KB	Output is correct
9	Correct	198 ms	214008 KB	Output is correct
10	Correct	206 ms	214136 KB	Output is correct
11	Correct	188 ms	214180 KB	Output is correct
12	Correct	199 ms	214136 KB	Output is correct
13	Correct	195 ms	214136 KB	Output is correct
14	Correct	201 ms	214112 KB	Output is correct
15	Correct	202 ms	214100 KB	Output is correct
16	Correct	209 ms	214136 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	187 ms	214068 KB	Output is correct
2	Correct	188 ms	214180 KB	Output is correct
3	Correct	215 ms	213980 KB	Output is correct
4	Correct	230 ms	214012 KB	Output is correct
5	Correct	196 ms	214008 KB	Output is correct
6	Correct	187 ms	214008 KB	Output is correct
7	Correct	192 ms	214148 KB	Output is correct
8	Correct	215 ms	214124 KB	Output is correct
9	Correct	198 ms	214008 KB	Output is correct
10	Correct	206 ms	214136 KB	Output is correct
11	Correct	188 ms	214180 KB	Output is correct
12	Correct	199 ms	214136 KB	Output is correct
13	Correct	195 ms	214136 KB	Output is correct
14	Correct	201 ms	214112 KB	Output is correct
15	Correct	202 ms	214100 KB	Output is correct
16	Correct	209 ms	214136 KB	Output is correct
17	Correct	198 ms	214148 KB	Output is correct
18	Correct	211 ms	214272 KB	Output is correct
19	Correct	188 ms	214264 KB	Output is correct
20	Correct	195 ms	214108 KB	Output is correct
21	Correct	194 ms	214164 KB	Output is correct
22	Correct	195 ms	214108 KB	Output is correct
23	Correct	182 ms	214080 KB	Output is correct
24	Correct	196 ms	214224 KB	Output is correct
25	Correct	191 ms	214212 KB	Output is correct
26	Correct	194 ms	214264 KB	Output is correct
27	Correct	196 ms	214264 KB	Output is correct
28	Correct	210 ms	214264 KB	Output is correct
29	Correct	184 ms	214136 KB	Output is correct
30	Correct	201 ms	214108 KB	Output is correct
31	Correct	212 ms	214168 KB	Output is correct
32	Correct	218 ms	214264 KB	Output is correct
33	Correct	189 ms	214136 KB	Output is correct
34	Correct	190 ms	214264 KB	Output is correct
35	Correct	208 ms	214136 KB	Output is correct
36	Correct	204 ms	214136 KB	Output is correct
37	Correct	212 ms	214196 KB	Output is correct
38	Correct	188 ms	214136 KB	Output is correct
39	Correct	187 ms	214112 KB	Output is correct
40	Correct	204 ms	214252 KB	Output is correct
41	Correct	201 ms	214172 KB	Output is correct
42	Correct	196 ms	214136 KB	Output is correct
43	Correct	220 ms	214156 KB	Output is correct
44	Correct	198 ms	214236 KB	Output is correct
45	Correct	196 ms	214136 KB	Output is correct
46	Correct	195 ms	214136 KB	Output is correct
47	Correct	202 ms	214356 KB	Output is correct
48	Correct	192 ms	214120 KB	Output is correct
49	Correct	219 ms	214340 KB	Output is correct
50	Correct	192 ms	214136 KB	Output is correct
51	Correct	195 ms	214108 KB	Output is correct
52	Correct	197 ms	214168 KB	Output is correct
53	Correct	195 ms	214136 KB	Output is correct

Subtask #3
0 / 67.0

#	결과	실행 시간	메모리	Grader output
1	Correct	187 ms	214068 KB	Output is correct
2	Correct	188 ms	214180 KB	Output is correct
3	Correct	215 ms	213980 KB	Output is correct
4	Correct	230 ms	214012 KB	Output is correct
5	Correct	196 ms	214008 KB	Output is correct
6	Correct	187 ms	214008 KB	Output is correct
7	Correct	192 ms	214148 KB	Output is correct
8	Correct	215 ms	214124 KB	Output is correct
9	Correct	198 ms	214008 KB	Output is correct
10	Correct	206 ms	214136 KB	Output is correct
11	Correct	188 ms	214180 KB	Output is correct
12	Correct	199 ms	214136 KB	Output is correct
13	Correct	195 ms	214136 KB	Output is correct
14	Correct	201 ms	214112 KB	Output is correct
15	Correct	202 ms	214100 KB	Output is correct
16	Correct	209 ms	214136 KB	Output is correct
17	Correct	198 ms	214148 KB	Output is correct
18	Correct	211 ms	214272 KB	Output is correct
19	Correct	188 ms	214264 KB	Output is correct
20	Correct	195 ms	214108 KB	Output is correct
21	Correct	194 ms	214164 KB	Output is correct
22	Correct	195 ms	214108 KB	Output is correct
23	Correct	182 ms	214080 KB	Output is correct
24	Correct	196 ms	214224 KB	Output is correct
25	Correct	191 ms	214212 KB	Output is correct
26	Correct	194 ms	214264 KB	Output is correct
27	Correct	196 ms	214264 KB	Output is correct
28	Correct	210 ms	214264 KB	Output is correct
29	Correct	184 ms	214136 KB	Output is correct
30	Correct	201 ms	214108 KB	Output is correct
31	Correct	212 ms	214168 KB	Output is correct
32	Correct	218 ms	214264 KB	Output is correct
33	Correct	189 ms	214136 KB	Output is correct
34	Correct	190 ms	214264 KB	Output is correct
35	Correct	208 ms	214136 KB	Output is correct
36	Correct	204 ms	214136 KB	Output is correct
37	Correct	212 ms	214196 KB	Output is correct
38	Correct	188 ms	214136 KB	Output is correct
39	Correct	187 ms	214112 KB	Output is correct
40	Correct	204 ms	214252 KB	Output is correct
41	Correct	201 ms	214172 KB	Output is correct
42	Correct	196 ms	214136 KB	Output is correct
43	Correct	220 ms	214156 KB	Output is correct
44	Correct	198 ms	214236 KB	Output is correct
45	Correct	196 ms	214136 KB	Output is correct
46	Correct	195 ms	214136 KB	Output is correct
47	Correct	202 ms	214356 KB	Output is correct
48	Correct	192 ms	214120 KB	Output is correct
49	Correct	219 ms	214340 KB	Output is correct
50	Correct	192 ms	214136 KB	Output is correct
51	Correct	195 ms	214108 KB	Output is correct
52	Correct	197 ms	214168 KB	Output is correct
53	Correct	195 ms	214136 KB	Output is correct
54	Correct	189 ms	214112 KB	Output is correct
55	Correct	218 ms	223224 KB	Output is correct
56	Correct	202 ms	214340 KB	Output is correct
57	Correct	223 ms	236332 KB	Output is correct
58	Correct	290 ms	240504 KB	Output is correct
59	Runtime error	766 ms	263168 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
60	Halted	0 ms	0 KB	-

답안 #99494

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 20.0 / 20.0

Subtask #3 0 / 67.0

Subtask #1
13.0 / 13.0

Subtask #2
20.0 / 20.0

Subtask #3
0 / 67.0