Submission #229887

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
229887	2020-05-07T03:29:59 Z	pedroslrey	Bootfall (IZhO17_bootfall)	C++14	65 / 100	794 ms	3244 KB

bootfall

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")

#include <bits/stdc++.h>

using namespace std;

using pii = pair<int, int>;
using lli = long long int;

#define debug(args...) fprintf(stderr, args)
#define pb push_back
#define fi first
#define se second
#define all(xs) xs.begin(), xs.end()

const int INF = 1e9;

int dp[510*510];
int xs[510];
int marc[510*510];

inline void add(int i, int s) {
	for (int k = s; k >= 0; --k) {
		lli tmp = 1LL*dp[k + xs[i]] + dp[k];
		dp[k + xs[i]] = tmp%INF;
	}
}

inline void sub(int i, int s) {
	for (int k = 0; k <= s; ++k) {
		lli tmp = 1LL*dp[k + xs[i]] - dp[k];
		dp[k + xs[i]] = tmp%INF;
	}
}

void init_dp(int n, int s) {
	dp[0] = 1;
	
	for (int i = 1; i <= n; ++i)
		add(i, s);
}

void solve(int n) {
	int s = 0;
	for (int i = 1; i <= n; ++i) 
		s += xs[i];

	init_dp(n, s);
	if (dp[s/2] == 0 || s%2 == 1) {
		printf("0\n");
		return;
	}

	for (int i = 1; i <= n; ++i) {
		sub(i, s);
		for (int k = 1; k <= s; ++k) {
			if ((s - xs[i] + k)%2 == 1) marc[k] = 0;
			if (dp[(s - xs[i] - k)/2]) ++marc[k];
		} 
		add(i, s);
	}

	vector<int> ans;
	for (int k = 1; k <= s; ++k) 
		if (marc[k] == n) ans.pb(k);

	printf("%d\n", (int) ans.size());
	for (int a: ans) 
		printf("%d ", a);
	printf("\n");
}

int main() {
	int n;
	scanf("%d", &n);

	for (int i = 1; i <= n; ++i)
		scanf("%d", &xs[i]);

	solve(n);
}

Compilation message

bootfall.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("O3")
 
bootfall.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("unroll-loops")
 
bootfall.cpp: In function 'int main()':
bootfall.cpp:77:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
bootfall.cpp:80:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &xs[i]);
   ~~~~~^~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	256 KB	Output is correct
8	Correct	5 ms	308 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	256 KB	Output is correct
8	Correct	5 ms	308 KB	Output is correct
9	Correct	5 ms	384 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	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	4 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct

Subtask #3
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	256 KB	Output is correct
8	Correct	5 ms	308 KB	Output is correct
9	Correct	5 ms	384 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	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	4 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	6 ms	384 KB	Output is correct
22	Correct	6 ms	384 KB	Output is correct
23	Correct	6 ms	384 KB	Output is correct
24	Correct	8 ms	384 KB	Output is correct
25	Correct	11 ms	384 KB	Output is correct
26	Correct	12 ms	512 KB	Output is correct
27	Correct	14 ms	384 KB	Output is correct
28	Correct	12 ms	512 KB	Output is correct
29	Correct	12 ms	384 KB	Output is correct
30	Correct	9 ms	384 KB	Output is correct
31	Correct	12 ms	512 KB	Output is correct
32	Correct	8 ms	384 KB	Output is correct
33	Correct	12 ms	384 KB	Output is correct
34	Correct	14 ms	384 KB	Output is correct
35	Correct	12 ms	384 KB	Output is correct
36	Correct	8 ms	384 KB	Output is correct

Subtask #4
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	256 KB	Output is correct
8	Correct	5 ms	308 KB	Output is correct
9	Correct	5 ms	384 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	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	4 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	6 ms	384 KB	Output is correct
22	Correct	6 ms	384 KB	Output is correct
23	Correct	6 ms	384 KB	Output is correct
24	Correct	8 ms	384 KB	Output is correct
25	Correct	11 ms	384 KB	Output is correct
26	Correct	12 ms	512 KB	Output is correct
27	Correct	14 ms	384 KB	Output is correct
28	Correct	12 ms	512 KB	Output is correct
29	Correct	12 ms	384 KB	Output is correct
30	Correct	9 ms	384 KB	Output is correct
31	Correct	12 ms	512 KB	Output is correct
32	Correct	8 ms	384 KB	Output is correct
33	Correct	12 ms	384 KB	Output is correct
34	Correct	14 ms	384 KB	Output is correct
35	Correct	12 ms	384 KB	Output is correct
36	Correct	8 ms	384 KB	Output is correct
37	Correct	34 ms	632 KB	Output is correct
38	Correct	35 ms	640 KB	Output is correct
39	Correct	122 ms	1016 KB	Output is correct
40	Correct	72 ms	760 KB	Output is correct
41	Correct	147 ms	944 KB	Output is correct
42	Correct	60 ms	760 KB	Output is correct
43	Correct	106 ms	1272 KB	Output is correct
44	Correct	108 ms	1144 KB	Output is correct
45	Correct	109 ms	1120 KB	Output is correct
46	Correct	67 ms	624 KB	Output is correct
47	Correct	66 ms	760 KB	Output is correct
48	Correct	119 ms	1128 KB	Output is correct
49	Correct	120 ms	888 KB	Output is correct
50	Correct	67 ms	760 KB	Output is correct
51	Correct	19 ms	384 KB	Output is correct
52	Correct	149 ms	1272 KB	Output is correct

Subtask #5
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	256 KB	Output is correct
8	Correct	5 ms	308 KB	Output is correct
9	Correct	5 ms	384 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	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	4 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	6 ms	384 KB	Output is correct
22	Correct	6 ms	384 KB	Output is correct
23	Correct	6 ms	384 KB	Output is correct
24	Correct	8 ms	384 KB	Output is correct
25	Correct	11 ms	384 KB	Output is correct
26	Correct	12 ms	512 KB	Output is correct
27	Correct	14 ms	384 KB	Output is correct
28	Correct	12 ms	512 KB	Output is correct
29	Correct	12 ms	384 KB	Output is correct
30	Correct	9 ms	384 KB	Output is correct
31	Correct	12 ms	512 KB	Output is correct
32	Correct	8 ms	384 KB	Output is correct
33	Correct	12 ms	384 KB	Output is correct
34	Correct	14 ms	384 KB	Output is correct
35	Correct	12 ms	384 KB	Output is correct
36	Correct	8 ms	384 KB	Output is correct
37	Correct	34 ms	632 KB	Output is correct
38	Correct	35 ms	640 KB	Output is correct
39	Correct	122 ms	1016 KB	Output is correct
40	Correct	72 ms	760 KB	Output is correct
41	Correct	147 ms	944 KB	Output is correct
42	Correct	60 ms	760 KB	Output is correct
43	Correct	106 ms	1272 KB	Output is correct
44	Correct	108 ms	1144 KB	Output is correct
45	Correct	109 ms	1120 KB	Output is correct
46	Correct	67 ms	624 KB	Output is correct
47	Correct	66 ms	760 KB	Output is correct
48	Correct	119 ms	1128 KB	Output is correct
49	Correct	120 ms	888 KB	Output is correct
50	Correct	67 ms	760 KB	Output is correct
51	Correct	19 ms	384 KB	Output is correct
52	Correct	149 ms	1272 KB	Output is correct
53	Correct	109 ms	1016 KB	Output is correct
54	Correct	150 ms	1148 KB	Output is correct
55	Correct	295 ms	1880 KB	Output is correct
56	Correct	135 ms	1272 KB	Output is correct
57	Correct	315 ms	1908 KB	Output is correct
58	Correct	168 ms	1272 KB	Output is correct
59	Correct	207 ms	1652 KB	Output is correct
60	Correct	44 ms	632 KB	Output is correct
61	Correct	232 ms	1524 KB	Output is correct
62	Correct	243 ms	1644 KB	Output is correct
63	Correct	260 ms	1908 KB	Output is correct
64	Correct	240 ms	1780 KB	Output is correct
65	Correct	118 ms	760 KB	Output is correct
66	Correct	129 ms	888 KB	Output is correct

Subtask #6
0 / 35.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	256 KB	Output is correct
8	Correct	5 ms	308 KB	Output is correct
9	Correct	5 ms	384 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	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	4 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	6 ms	384 KB	Output is correct
22	Correct	6 ms	384 KB	Output is correct
23	Correct	6 ms	384 KB	Output is correct
24	Correct	8 ms	384 KB	Output is correct
25	Correct	11 ms	384 KB	Output is correct
26	Correct	12 ms	512 KB	Output is correct
27	Correct	14 ms	384 KB	Output is correct
28	Correct	12 ms	512 KB	Output is correct
29	Correct	12 ms	384 KB	Output is correct
30	Correct	9 ms	384 KB	Output is correct
31	Correct	12 ms	512 KB	Output is correct
32	Correct	8 ms	384 KB	Output is correct
33	Correct	12 ms	384 KB	Output is correct
34	Correct	14 ms	384 KB	Output is correct
35	Correct	12 ms	384 KB	Output is correct
36	Correct	8 ms	384 KB	Output is correct
37	Correct	34 ms	632 KB	Output is correct
38	Correct	35 ms	640 KB	Output is correct
39	Correct	122 ms	1016 KB	Output is correct
40	Correct	72 ms	760 KB	Output is correct
41	Correct	147 ms	944 KB	Output is correct
42	Correct	60 ms	760 KB	Output is correct
43	Correct	106 ms	1272 KB	Output is correct
44	Correct	108 ms	1144 KB	Output is correct
45	Correct	109 ms	1120 KB	Output is correct
46	Correct	67 ms	624 KB	Output is correct
47	Correct	66 ms	760 KB	Output is correct
48	Correct	119 ms	1128 KB	Output is correct
49	Correct	120 ms	888 KB	Output is correct
50	Correct	67 ms	760 KB	Output is correct
51	Correct	19 ms	384 KB	Output is correct
52	Correct	149 ms	1272 KB	Output is correct
53	Correct	109 ms	1016 KB	Output is correct
54	Correct	150 ms	1148 KB	Output is correct
55	Correct	295 ms	1880 KB	Output is correct
56	Correct	135 ms	1272 KB	Output is correct
57	Correct	315 ms	1908 KB	Output is correct
58	Correct	168 ms	1272 KB	Output is correct
59	Correct	207 ms	1652 KB	Output is correct
60	Correct	44 ms	632 KB	Output is correct
61	Correct	232 ms	1524 KB	Output is correct
62	Correct	243 ms	1644 KB	Output is correct
63	Correct	260 ms	1908 KB	Output is correct
64	Correct	240 ms	1780 KB	Output is correct
65	Correct	118 ms	760 KB	Output is correct
66	Correct	129 ms	888 KB	Output is correct
67	Correct	248 ms	1524 KB	Output is correct
68	Correct	121 ms	888 KB	Output is correct
69	Incorrect	794 ms	3244 KB	Output isn't correct
70	Halted	0 ms	0 KB	-

Submission #229887

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 7.0 / 7.0

Subtask #3 15.0 / 15.0

Subtask #4 16.0 / 16.0

Subtask #5 21.0 / 21.0

Subtask #6 0 / 35.0

Subtask #1
6.0 / 6.0

Subtask #2
7.0 / 7.0

Subtask #3
15.0 / 15.0

Subtask #4
16.0 / 16.0

Subtask #5
21.0 / 21.0

Subtask #6
0 / 35.0