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답안 #216868

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
216868 2020-03-28T08:33:41 Z oolimry Collecting Stamps 3 (JOI20_ho_t3) C++14
100 / 100
 532 ms 66812 KB 
#include <bits/stdc++.h>
#define x first
#define t second

using namespace std;
typedef pair<long long, long long> ii;
long long inf = (1LL << 48LL);
vector<ii> arr = {ii({0,-2})};

static long long memo[205][205][205];
long long n, L; 


long long dp(int pos, int bound, int taken){
	if(taken < 0) return inf;	
	if(pos == bound) return inf;
	long long ans = inf;
	if(pos == 0 && bound == 0) return inf;
	if(pos == n+1 && bound == n+1) return inf;
	if(pos == 0 && bound == n+1){
		if(taken == 0) return 0;
		else return inf;
	}
	if(pos == n+1 && bound == 0){
		if(taken == 0) return 0;
		else return inf;
	}
	
	if(pos == 0 || pos == n+1) return inf;
	
	if(memo[pos][bound][taken] != -1) return memo[pos][bound][taken];
	int pos2;
	long long dPos, dCross;

	if(pos < bound){
		pos2 = pos-1;
		if(pos2 == -1) pos2 = n+1;
	}
	else{
		pos2 = pos+1;
		if(pos2 == n+2) pos2 = 0;
	}
	
	if(pos > pos2) dPos = arr[pos].x - arr[pos2].x;
	else dPos = arr[pos2].x - arr[pos].x;
	
	

	///move from bound to pos
	if(bound > pos){
		dCross = L - (arr[bound].x - arr[pos].x);
	}
	else{
		dCross = L - (arr[pos].x - arr[bound].x);
	}
	
	assert(dPos >= 0);
	assert(dCross >= 0);
	
	
	if(pos == 1 && bound == 0){
		//cout << pos << " " << bound << " " << pos2 << " " << dPos << " " << dCross << "\n";
	}
	
	ans = min(ans, dp(pos2, bound, taken) + dPos);
	ans = min(ans, dp(bound, pos2, taken) + dCross);
	
	if(dp(pos2, bound, taken - 1) + dPos <= arr[pos].t){
		ans = min(dp(pos2, bound, taken - 1) + dPos, ans);
	}
	
	if(dp(bound, pos2, taken - 1) + dCross <= arr[pos].t){
		ans = min(dp(bound, pos2, taken - 1) + dCross, ans);
	}
	
	//if(pos == 2 && bound == 11 && taken == 0){
	//	cout << pos2 << " "  << dPos << " " << dCross << "\n";
	//}
	//cout << pos << " " << bound << " " << taken << " " << ans << endl;
	memo[pos][bound][taken] = ans;
	return ans;
}
int main(){
	//freopen("i.txt","r",stdin);
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	cin >> n >> L;
	
	for(int i = 0;i < n;i++){
		arr.push_back(ii(0,0));
	}
	
	for(int i = 1;i <= n;i++) cin >> arr[i].x;
	for(int i = 1;i <= n;i++) cin >> arr[i].t;
	arr.push_back(ii(L,-2));
	
	for(int i = 0;i <= n + 1;i++){
		for(int j = 0;j <= n + 1;j++){
			for(int k = 0;k <= n + 1;k++){
				memo[i][j][k] = -1;
			}
		}
	}
	
	
	
	long long ANS = 0;
	for(long long taken = 0;taken <= n;taken++){
		for(int i = 0;i <= n + 1;i++){
			for(int j = 0;j <= n + 1;j++){
				long long DP = dp(i,j,taken);
				if(DP < inf){
					ANS = max(ANS, taken);
					//if(taken == 6) cout << i << " " << j << " " << DP << '\n';
				}
			}
		}
	}
	
	cout << ANS;
	
	
	//cout << dp(10,11,6);
	
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 640 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 640 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 640 KB Output is correct
9 Correct 5 ms 640 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 768 KB Output is correct
13 Correct 5 ms 768 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 6 ms 768 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 640 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 640 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 640 KB Output is correct
9 Correct 5 ms 640 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 768 KB Output is correct
13 Correct 5 ms 768 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 6 ms 768 KB Output is correct
18 Correct 6 ms 768 KB Output is correct
19 Correct 5 ms 640 KB Output is correct
20 Correct 5 ms 768 KB Output is correct
21 Correct 5 ms 768 KB Output is correct
22 Correct 5 ms 512 KB Output is correct
23 Correct 5 ms 896 KB Output is correct
24 Correct 5 ms 768 KB Output is correct
25 Correct 5 ms 768 KB Output is correct
26 Correct 5 ms 744 KB Output is correct
27 Correct 5 ms 512 KB Output is correct
28 Correct 5 ms 512 KB Output is correct
29 Correct 5 ms 896 KB Output is correct
30 Correct 6 ms 1024 KB Output is correct
31 Correct 5 ms 896 KB Output is correct
32 Correct 5 ms 768 KB Output is correct
33 Correct 5 ms 896 KB Output is correct
34 Correct 5 ms 896 KB Output is correct
35 Correct 5 ms 904 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 640 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 640 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 640 KB Output is correct
9 Correct 5 ms 640 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 768 KB Output is correct
13 Correct 5 ms 768 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 6 ms 768 KB Output is correct
18 Correct 477 ms 53632 KB Output is correct
19 Correct 184 ms 32768 KB Output is correct
20 Correct 70 ms 17784 KB Output is correct
21 Correct 162 ms 30976 KB Output is correct
22 Correct 246 ms 40048 KB Output is correct
23 Correct 61 ms 15200 KB Output is correct
24 Correct 40 ms 12024 KB Output is correct
25 Correct 52 ms 14848 KB Output is correct
26 Correct 15 ms 6016 KB Output is correct
27 Correct 57 ms 15480 KB Output is correct
28 Correct 43 ms 11256 KB Output is correct
29 Correct 56 ms 15744 KB Output is correct
30 Correct 39 ms 12544 KB Output is correct
31 Correct 53 ms 14848 KB Output is correct
32 Correct 20 ms 8064 KB Output is correct
33 Correct 49 ms 14840 KB Output is correct
34 Correct 13 ms 5632 KB Output is correct
35 Correct 54 ms 14592 KB Output is correct
36 Correct 20 ms 7168 KB Output is correct
37 Correct 53 ms 15488 KB Output is correct
38 Correct 24 ms 8704 KB Output is correct
39 Correct 59 ms 16128 KB Output is correct
40 Correct 27 ms 9600 KB Output is correct
41 Correct 494 ms 65916 KB Output is correct
42 Correct 247 ms 44672 KB Output is correct
43 Correct 504 ms 66040 KB Output is correct
44 Correct 251 ms 44160 KB Output is correct
45 Correct 532 ms 66172 KB Output is correct
46 Correct 246 ms 44672 KB Output is correct

Subtask #4
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 640 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 640 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 640 KB Output is correct
9 Correct 5 ms 640 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 768 KB Output is correct
13 Correct 5 ms 768 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 6 ms 768 KB Output is correct
18 Correct 6 ms 768 KB Output is correct
19 Correct 5 ms 640 KB Output is correct
20 Correct 5 ms 768 KB Output is correct
21 Correct 5 ms 768 KB Output is correct
22 Correct 5 ms 512 KB Output is correct
23 Correct 5 ms 896 KB Output is correct
24 Correct 5 ms 768 KB Output is correct
25 Correct 5 ms 768 KB Output is correct
26 Correct 5 ms 744 KB Output is correct
27 Correct 5 ms 512 KB Output is correct
28 Correct 5 ms 512 KB Output is correct
29 Correct 5 ms 896 KB Output is correct
30 Correct 6 ms 1024 KB Output is correct
31 Correct 5 ms 896 KB Output is correct
32 Correct 5 ms 768 KB Output is correct
33 Correct 5 ms 896 KB Output is correct
34 Correct 5 ms 896 KB Output is correct
35 Correct 5 ms 904 KB Output is correct
36 Correct 477 ms 53632 KB Output is correct
37 Correct 184 ms 32768 KB Output is correct
38 Correct 70 ms 17784 KB Output is correct
39 Correct 162 ms 30976 KB Output is correct
40 Correct 246 ms 40048 KB Output is correct
41 Correct 61 ms 15200 KB Output is correct
42 Correct 40 ms 12024 KB Output is correct
43 Correct 52 ms 14848 KB Output is correct
44 Correct 15 ms 6016 KB Output is correct
45 Correct 57 ms 15480 KB Output is correct
46 Correct 43 ms 11256 KB Output is correct
47 Correct 56 ms 15744 KB Output is correct
48 Correct 39 ms 12544 KB Output is correct
49 Correct 53 ms 14848 KB Output is correct
50 Correct 20 ms 8064 KB Output is correct
51 Correct 49 ms 14840 KB Output is correct
52 Correct 13 ms 5632 KB Output is correct
53 Correct 54 ms 14592 KB Output is correct
54 Correct 20 ms 7168 KB Output is correct
55 Correct 53 ms 15488 KB Output is correct
56 Correct 24 ms 8704 KB Output is correct
57 Correct 59 ms 16128 KB Output is correct
58 Correct 27 ms 9600 KB Output is correct
59 Correct 494 ms 65916 KB Output is correct
60 Correct 247 ms 44672 KB Output is correct
61 Correct 504 ms 66040 KB Output is correct
62 Correct 251 ms 44160 KB Output is correct
63 Correct 532 ms 66172 KB Output is correct
64 Correct 246 ms 44672 KB Output is correct
65 Correct 439 ms 59768 KB Output is correct
66 Correct 349 ms 54784 KB Output is correct
67 Correct 324 ms 52480 KB Output is correct
68 Correct 295 ms 48512 KB Output is correct
69 Correct 401 ms 59008 KB Output is correct
70 Correct 396 ms 56692 KB Output is correct
71 Correct 361 ms 57344 KB Output is correct
72 Correct 416 ms 57976 KB Output is correct
73 Correct 325 ms 53632 KB Output is correct
74 Correct 340 ms 50232 KB Output is correct
75 Correct 363 ms 55444 KB Output is correct
76 Correct 510 ms 63480 KB Output is correct
77 Correct 435 ms 63356 KB Output is correct
78 Correct 307 ms 49020 KB Output is correct
79 Correct 300 ms 50688 KB Output is correct
80 Correct 497 ms 62200 KB Output is correct
81 Correct 369 ms 51372 KB Output is correct
82 Correct 347 ms 54136 KB Output is correct
83 Correct 482 ms 65920 KB Output is correct
84 Correct 376 ms 56576 KB Output is correct
85 Correct 415 ms 61560 KB Output is correct
86 Correct 397 ms 60288 KB Output is correct
87 Correct 344 ms 55424 KB Output is correct
88 Correct 532 ms 66680 KB Output is correct
89 Correct 518 ms 66808 KB Output is correct
90 Correct 348 ms 55936 KB Output is correct
91 Correct 513 ms 66812 KB Output is correct
92 Correct 511 ms 66680 KB Output is correct
93 Correct 507 ms 65380 KB Output is correct