Submission #246333

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
246333	2020-07-08T17:36:17 Z	tonowak	Toys (CEOI18_toy)	C++14	59 / 100	5000 ms	3452 KB

#include <bits/stdc++.h> // Tomasz Nowak
using namespace std;     // XIII LO Szczecin
using LL = long long;    // Poland
#define FOR(i, l, r) for(int i = (l); i <= (r); ++i)
#define REP(i, n) FOR(i, 0, (n) - 1)
template<class T> int size(T &&x) {
	return int(x.size());
}
template<class A, class B> ostream& operator<<(ostream &out, const pair<A, B> &p) {
	return out << '(' << p.first << ", " << p.second << ')';
}
template<class T> auto operator<<(ostream &out, T &&x) -> decltype(x.begin(), out) {
	out << '{';
	for(auto it = x.begin(); it != x.end(); ++it)
		out << *it << (it == prev(x.end()) ? "" : ", ");
	return out << '}';
}
void dump() {}
template<class T, class... Args> void dump(T &&x, Args... args) {
	cerr << x << ";  ";
	dump(args...);
}
#ifdef DEBUG
  struct Nl{~Nl(){cerr << '\n';}};
# define debug(x...) cerr << (strcmp(#x, "") ? #x ":  " : ""), dump(x), Nl(), cerr << ""
#else
# define debug(...) 0 && cerr
#endif
mt19937_64 rng(0);
int rd(int l, int r) {
	return uniform_int_distribution<int>(l, r)(rng);
}
// end of templates

int n;
vector<int> curr_vec;
int curr_mul = 1;

set<int> answers;

bool can_mul(int a, int b) {
	return a <= n / b and a * b <= n;
}

void backtrack() {
	debug(curr_mul, curr_vec);
	if(curr_mul == n) {
		answers.emplace(accumulate(curr_vec.begin(), curr_vec.end(), 0));
		return;
	}
	// add new
	if(can_mul(curr_mul, 2)) {
		curr_mul *= 2;
		curr_vec.emplace_back(1);
		backtrack();
		curr_mul /= 2;
		curr_vec.pop_back();
	}

	// increase last number
	if(size(curr_vec) == 1 or (size(curr_vec) >= 2 and curr_vec.back() + 1 <= curr_vec.end()[-2])) 
		if(can_mul(curr_mul / (curr_vec.back() + 1), curr_vec.back() + 2)) {
			curr_mul /= curr_vec.back() + 1;
			++curr_vec.back();
			curr_mul *= curr_vec.back() + 1;
			backtrack();
			curr_mul /= curr_vec.back() + 1;
			--curr_vec.back();
			curr_mul *= curr_vec.back() + 1;
		}
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	cin >> n;
	backtrack();
	cout << size(answers) << '\n';
	for(int a : answers)
		cout << a << ' ';
	cout << '\n';
}

Subtask #1
19.0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	4 ms	384 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	4 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	4 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	6 ms	384 KB	Output is correct
19	Correct	6 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct

Subtask #2
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	4 ms	384 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	4 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	4 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	6 ms	384 KB	Output is correct
19	Correct	6 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	7 ms	640 KB	Output is correct
27	Correct	6 ms	512 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	5 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	8 ms	640 KB	Output is correct
32	Correct	7 ms	640 KB	Output is correct
33	Correct	6 ms	640 KB	Output is correct
34	Correct	9 ms	640 KB	Output is correct
35	Correct	7 ms	640 KB	Output is correct
36	Correct	7 ms	640 KB	Output is correct
37	Correct	7 ms	512 KB	Output is correct
38	Correct	9 ms	640 KB	Output is correct
39	Correct	7 ms	640 KB	Output is correct
40	Correct	7 ms	640 KB	Output is correct
41	Correct	7 ms	640 KB	Output is correct
42	Correct	7 ms	640 KB	Output is correct
43	Correct	7 ms	640 KB	Output is correct
44	Correct	7 ms	640 KB	Output is correct
45	Correct	7 ms	640 KB	Output is correct
46	Correct	7 ms	640 KB	Output is correct
47	Correct	7 ms	640 KB	Output is correct
48	Correct	7 ms	640 KB	Output is correct
49	Correct	8 ms	640 KB	Output is correct

Subtask #3
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	4 ms	384 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	4 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	4 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	6 ms	384 KB	Output is correct
19	Correct	6 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	7 ms	640 KB	Output is correct
27	Correct	6 ms	512 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	5 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	8 ms	640 KB	Output is correct
32	Correct	7 ms	640 KB	Output is correct
33	Correct	6 ms	640 KB	Output is correct
34	Correct	9 ms	640 KB	Output is correct
35	Correct	7 ms	640 KB	Output is correct
36	Correct	7 ms	640 KB	Output is correct
37	Correct	7 ms	512 KB	Output is correct
38	Correct	9 ms	640 KB	Output is correct
39	Correct	7 ms	640 KB	Output is correct
40	Correct	7 ms	640 KB	Output is correct
41	Correct	7 ms	640 KB	Output is correct
42	Correct	7 ms	640 KB	Output is correct
43	Correct	7 ms	640 KB	Output is correct
44	Correct	7 ms	640 KB	Output is correct
45	Correct	7 ms	640 KB	Output is correct
46	Correct	7 ms	640 KB	Output is correct
47	Correct	7 ms	640 KB	Output is correct
48	Correct	7 ms	640 KB	Output is correct
49	Correct	8 ms	640 KB	Output is correct
50	Correct	47 ms	2936 KB	Output is correct
51	Correct	30 ms	2040 KB	Output is correct
52	Correct	27 ms	1912 KB	Output is correct
53	Correct	24 ms	1792 KB	Output is correct
54	Correct	15 ms	1280 KB	Output is correct
55	Correct	53 ms	3192 KB	Output is correct
56	Correct	45 ms	2936 KB	Output is correct
57	Correct	42 ms	2808 KB	Output is correct
58	Correct	57 ms	3452 KB	Output is correct
59	Correct	55 ms	3320 KB	Output is correct
60	Correct	36 ms	2552 KB	Output is correct
61	Correct	52 ms	3320 KB	Output is correct
62	Correct	15 ms	1280 KB	Output is correct
63	Correct	58 ms	3448 KB	Output is correct
64	Correct	57 ms	3448 KB	Output is correct
65	Correct	51 ms	3192 KB	Output is correct
66	Correct	57 ms	3448 KB	Output is correct
67	Correct	58 ms	3448 KB	Output is correct
68	Correct	59 ms	3448 KB	Output is correct
69	Correct	57 ms	3448 KB	Output is correct
70	Correct	50 ms	3224 KB	Output is correct

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	4 ms	384 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	4 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	4 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	6 ms	384 KB	Output is correct
19	Correct	6 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	7 ms	640 KB	Output is correct
27	Correct	6 ms	512 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	5 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	8 ms	640 KB	Output is correct
32	Correct	7 ms	640 KB	Output is correct
33	Correct	6 ms	640 KB	Output is correct
34	Correct	9 ms	640 KB	Output is correct
35	Correct	7 ms	640 KB	Output is correct
36	Correct	7 ms	640 KB	Output is correct
37	Correct	7 ms	512 KB	Output is correct
38	Correct	9 ms	640 KB	Output is correct
39	Correct	7 ms	640 KB	Output is correct
40	Correct	7 ms	640 KB	Output is correct
41	Correct	7 ms	640 KB	Output is correct
42	Correct	7 ms	640 KB	Output is correct
43	Correct	7 ms	640 KB	Output is correct
44	Correct	7 ms	640 KB	Output is correct
45	Correct	7 ms	640 KB	Output is correct
46	Correct	7 ms	640 KB	Output is correct
47	Correct	7 ms	640 KB	Output is correct
48	Correct	7 ms	640 KB	Output is correct
49	Correct	8 ms	640 KB	Output is correct
50	Correct	47 ms	2936 KB	Output is correct
51	Correct	30 ms	2040 KB	Output is correct
52	Correct	27 ms	1912 KB	Output is correct
53	Correct	24 ms	1792 KB	Output is correct
54	Correct	15 ms	1280 KB	Output is correct
55	Correct	53 ms	3192 KB	Output is correct
56	Correct	45 ms	2936 KB	Output is correct
57	Correct	42 ms	2808 KB	Output is correct
58	Correct	57 ms	3452 KB	Output is correct
59	Correct	55 ms	3320 KB	Output is correct
60	Correct	36 ms	2552 KB	Output is correct
61	Correct	52 ms	3320 KB	Output is correct
62	Correct	15 ms	1280 KB	Output is correct
63	Correct	58 ms	3448 KB	Output is correct
64	Correct	57 ms	3448 KB	Output is correct
65	Correct	51 ms	3192 KB	Output is correct
66	Correct	57 ms	3448 KB	Output is correct
67	Correct	58 ms	3448 KB	Output is correct
68	Correct	59 ms	3448 KB	Output is correct
69	Correct	57 ms	3448 KB	Output is correct
70	Correct	50 ms	3224 KB	Output is correct
71	Execution timed out	5066 ms	764 KB	Time limit exceeded
72	Halted	0 ms	0 KB	-

Subtask #5
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	4 ms	384 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	4 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	4 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	6 ms	384 KB	Output is correct
19	Correct	6 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	7 ms	640 KB	Output is correct
27	Correct	6 ms	512 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	5 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	8 ms	640 KB	Output is correct
32	Correct	7 ms	640 KB	Output is correct
33	Correct	6 ms	640 KB	Output is correct
34	Correct	9 ms	640 KB	Output is correct
35	Correct	7 ms	640 KB	Output is correct
36	Correct	7 ms	640 KB	Output is correct
37	Correct	7 ms	512 KB	Output is correct
38	Correct	9 ms	640 KB	Output is correct
39	Correct	7 ms	640 KB	Output is correct
40	Correct	7 ms	640 KB	Output is correct
41	Correct	7 ms	640 KB	Output is correct
42	Correct	7 ms	640 KB	Output is correct
43	Correct	7 ms	640 KB	Output is correct
44	Correct	7 ms	640 KB	Output is correct
45	Correct	7 ms	640 KB	Output is correct
46	Correct	7 ms	640 KB	Output is correct
47	Correct	7 ms	640 KB	Output is correct
48	Correct	7 ms	640 KB	Output is correct
49	Correct	8 ms	640 KB	Output is correct
50	Correct	47 ms	2936 KB	Output is correct
51	Correct	30 ms	2040 KB	Output is correct
52	Correct	27 ms	1912 KB	Output is correct
53	Correct	24 ms	1792 KB	Output is correct
54	Correct	15 ms	1280 KB	Output is correct
55	Correct	53 ms	3192 KB	Output is correct
56	Correct	45 ms	2936 KB	Output is correct
57	Correct	42 ms	2808 KB	Output is correct
58	Correct	57 ms	3452 KB	Output is correct
59	Correct	55 ms	3320 KB	Output is correct
60	Correct	36 ms	2552 KB	Output is correct
61	Correct	52 ms	3320 KB	Output is correct
62	Correct	15 ms	1280 KB	Output is correct
63	Correct	58 ms	3448 KB	Output is correct
64	Correct	57 ms	3448 KB	Output is correct
65	Correct	51 ms	3192 KB	Output is correct
66	Correct	57 ms	3448 KB	Output is correct
67	Correct	58 ms	3448 KB	Output is correct
68	Correct	59 ms	3448 KB	Output is correct
69	Correct	57 ms	3448 KB	Output is correct
70	Correct	50 ms	3224 KB	Output is correct
71	Execution timed out	5066 ms	764 KB	Time limit exceeded
72	Halted	0 ms	0 KB	-

Submission #246333

Compilation message

Subtask #1 19.0 / 19.0

Subtask #2 20.0 / 20.0

Subtask #3 20.0 / 20.0

Subtask #4 0 / 20.0

Subtask #5 0 / 21.0

Subtask #1
19.0 / 19.0

Subtask #2
20.0 / 20.0

Subtask #3
20.0 / 20.0

Subtask #4
0 / 20.0

Subtask #5
0 / 21.0