oj.uz

Submission #536196

# Submission time Handle Problem Language Result Execution time Memory
536196 2022-03-12T15:05:18 Z akhan42 Bootfall (IZhO17_bootfall) C++17
44 / 100
 1000 ms 2632 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

#define F first
#define S second
#define forn(i, n) for(int i = 0; i < n; ++i)
#define forbn(i, b, n) for(int i = b; i < n; ++i)
#define sz(v) (int)v.size()
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define all(v) v.begin(), v.end()
#define min3(a, b, c) min(a, min(b, c))
#define lc v << 1
#define rc (v << 1) + 1

typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef long long ll;
typedef complex<double> cd;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

template <class T> inline void mineq(T &a, T b) { a = min(a, b); }
template <class T> inline void maxeq(T &a, T b) { a = max(a, b); }


const int BASE = 500;
const int MX = BASE * BASE + 1;
using bts = bitset<MX>;


int last_bit(bts& a) {
	int i = a._Find_first();
	while(a._Find_next(i) != sz(a))
		i = a._Find_next(i);
	return i;
}


int pr2 = 479001599;


int add(int a, int b, int mod) {
	return ((a + b) % mod + mod) % mod;
}



bts divide(vi pol2, int d) {
	bts res;

	for(int i = 0; i + d < MX; i++) {
		if(pol2[i] != 0) {
			pol2[i + d] = add(pol2[i + d], -pol2[i], pr2);
			res[i] = 1;
		}
	}

	return res;
}


void solve() {
	int n;
	cin >> n;
	vi arr(n);
	forn(i, n)
	cin >> arr[i];
	sort(all(arr));

	vi pol2(MX, 0);
	pol2[0] = 1;
	for(int a: arr) {
		for(int i = MX - a - 1; i >= 0; i--) {
			pol2[i + a] = add(pol2[i + a], pol2[i], pr2);
		}
	}


	bts s;
	s[0] = 1;
	int total = 0;
	bool odd = true, even = true;
	for(int a: arr) {
		s |= s << a;
		total += a;
		if(a % 2)
			even = false;
		else
			odd = false;
	}

	if(total % 2 || s[total / 2] == 0 || (!even && !odd))
	{
		cout << 0;
		return;
	}

	bts ans;
	ans.flip();
	forn(i, n) {
		bts c = divide(pol2, arr[i]);

		int d = (total - arr[i] - (odd ? 1 : 0)) / 2;

		ans &= c >> d;
	}

	vi vans;
	forbn(i, 1, MX) {
		if(ans[i]) {
			vans.pb(2 * i - (odd ? 1 : 0));
		}
	}

	cout << sz(vans) << '\n';
	for(int el: vans)
		cout << el << ' ';
}


int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);

//	freopen("triangles.in", "r", stdin);
//	freopen("triangles.out", "w", stdout);

	int t = 1;
//	cin >> t;
	while(t--) {
		solve();
	}
}

Compilation message

bootfall.cpp: In function 'int last_bit(bts&)':
bootfall.cpp:40:24: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   40 |  while(a._Find_next(i) != sz(a))
      |                        ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2432 KB Output is correct
2 Correct 16 ms 2400 KB Output is correct
3 Correct 8 ms 1364 KB Output is correct
4 Correct 12 ms 2396 KB Output is correct
5 Correct 32 ms 2348 KB Output is correct
6 Correct 22 ms 2400 KB Output is correct
7 Correct 18 ms 2396 KB Output is correct
8 Correct 37 ms 2376 KB Output is correct
9 Correct 28 ms 1364 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2432 KB Output is correct
2 Correct 16 ms 2400 KB Output is correct
3 Correct 8 ms 1364 KB Output is correct
4 Correct 12 ms 2396 KB Output is correct
5 Correct 32 ms 2348 KB Output is correct
6 Correct 22 ms 2400 KB Output is correct
7 Correct 18 ms 2396 KB Output is correct
8 Correct 37 ms 2376 KB Output is correct
9 Correct 28 ms 1364 KB Output is correct
10 Correct 79 ms 2380 KB Output is correct
11 Correct 80 ms 2392 KB Output is correct
12 Correct 76 ms 2388 KB Output is correct
13 Correct 62 ms 1364 KB Output is correct
14 Correct 75 ms 2376 KB Output is correct
15 Correct 79 ms 2388 KB Output is correct
16 Correct 87 ms 2388 KB Output is correct
17 Correct 48 ms 2380 KB Output is correct
18 Correct 64 ms 2384 KB Output is correct
19 Correct 71 ms 2376 KB Output is correct
20 Correct 81 ms 2392 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2432 KB Output is correct
2 Correct 16 ms 2400 KB Output is correct
3 Correct 8 ms 1364 KB Output is correct
4 Correct 12 ms 2396 KB Output is correct
5 Correct 32 ms 2348 KB Output is correct
6 Correct 22 ms 2400 KB Output is correct
7 Correct 18 ms 2396 KB Output is correct
8 Correct 37 ms 2376 KB Output is correct
9 Correct 28 ms 1364 KB Output is correct
10 Correct 79 ms 2380 KB Output is correct
11 Correct 80 ms 2392 KB Output is correct
12 Correct 76 ms 2388 KB Output is correct
13 Correct 62 ms 1364 KB Output is correct
14 Correct 75 ms 2376 KB Output is correct
15 Correct 79 ms 2388 KB Output is correct
16 Correct 87 ms 2388 KB Output is correct
17 Correct 48 ms 2380 KB Output is correct
18 Correct 64 ms 2384 KB Output is correct
19 Correct 71 ms 2376 KB Output is correct
20 Correct 81 ms 2392 KB Output is correct
21 Correct 186 ms 2420 KB Output is correct
22 Correct 202 ms 2380 KB Output is correct
23 Correct 129 ms 2396 KB Output is correct
24 Correct 265 ms 2552 KB Output is correct
25 Correct 272 ms 2420 KB Output is correct
26 Correct 306 ms 2376 KB Output is correct
27 Correct 268 ms 2508 KB Output is correct
28 Correct 284 ms 2380 KB Output is correct
29 Correct 287 ms 2416 KB Output is correct
30 Correct 263 ms 1364 KB Output is correct
31 Correct 284 ms 2424 KB Output is correct
32 Correct 263 ms 2396 KB Output is correct
33 Correct 278 ms 2380 KB Output is correct
34 Correct 257 ms 2376 KB Output is correct
35 Correct 291 ms 2340 KB Output is correct
36 Correct 257 ms 2384 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2432 KB Output is correct
2 Correct 16 ms 2400 KB Output is correct
3 Correct 8 ms 1364 KB Output is correct
4 Correct 12 ms 2396 KB Output is correct
5 Correct 32 ms 2348 KB Output is correct
6 Correct 22 ms 2400 KB Output is correct
7 Correct 18 ms 2396 KB Output is correct
8 Correct 37 ms 2376 KB Output is correct
9 Correct 28 ms 1364 KB Output is correct
10 Correct 79 ms 2380 KB Output is correct
11 Correct 80 ms 2392 KB Output is correct
12 Correct 76 ms 2388 KB Output is correct
13 Correct 62 ms 1364 KB Output is correct
14 Correct 75 ms 2376 KB Output is correct
15 Correct 79 ms 2388 KB Output is correct
16 Correct 87 ms 2388 KB Output is correct
17 Correct 48 ms 2380 KB Output is correct
18 Correct 64 ms 2384 KB Output is correct
19 Correct 71 ms 2376 KB Output is correct
20 Correct 81 ms 2392 KB Output is correct
21 Correct 186 ms 2420 KB Output is correct
22 Correct 202 ms 2380 KB Output is correct
23 Correct 129 ms 2396 KB Output is correct
24 Correct 265 ms 2552 KB Output is correct
25 Correct 272 ms 2420 KB Output is correct
26 Correct 306 ms 2376 KB Output is correct
27 Correct 268 ms 2508 KB Output is correct
28 Correct 284 ms 2380 KB Output is correct
29 Correct 287 ms 2416 KB Output is correct
30 Correct 263 ms 1364 KB Output is correct
31 Correct 284 ms 2424 KB Output is correct
32 Correct 263 ms 2396 KB Output is correct
33 Correct 278 ms 2380 KB Output is correct
34 Correct 257 ms 2376 KB Output is correct
35 Correct 291 ms 2340 KB Output is correct
36 Correct 257 ms 2384 KB Output is correct
37 Correct 575 ms 2384 KB Output is correct
38 Correct 592 ms 2376 KB Output is correct
39 Correct 631 ms 2376 KB Output is correct
40 Correct 761 ms 2512 KB Output is correct
41 Correct 714 ms 2380 KB Output is correct
42 Correct 728 ms 2504 KB Output is correct
43 Correct 755 ms 2548 KB Output is correct
44 Correct 768 ms 2508 KB Output is correct
45 Correct 777 ms 2504 KB Output is correct
46 Correct 756 ms 2376 KB Output is correct
47 Correct 742 ms 2416 KB Output is correct
48 Correct 757 ms 2508 KB Output is correct
49 Correct 720 ms 2424 KB Output is correct
50 Correct 732 ms 2500 KB Output is correct
51 Correct 622 ms 1364 KB Output is correct
52 Correct 858 ms 2504 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2432 KB Output is correct
2 Correct 16 ms 2400 KB Output is correct
3 Correct 8 ms 1364 KB Output is correct
4 Correct 12 ms 2396 KB Output is correct
5 Correct 32 ms 2348 KB Output is correct
6 Correct 22 ms 2400 KB Output is correct
7 Correct 18 ms 2396 KB Output is correct
8 Correct 37 ms 2376 KB Output is correct
9 Correct 28 ms 1364 KB Output is correct
10 Correct 79 ms 2380 KB Output is correct
11 Correct 80 ms 2392 KB Output is correct
12 Correct 76 ms 2388 KB Output is correct
13 Correct 62 ms 1364 KB Output is correct
14 Correct 75 ms 2376 KB Output is correct
15 Correct 79 ms 2388 KB Output is correct
16 Correct 87 ms 2388 KB Output is correct
17 Correct 48 ms 2380 KB Output is correct
18 Correct 64 ms 2384 KB Output is correct
19 Correct 71 ms 2376 KB Output is correct
20 Correct 81 ms 2392 KB Output is correct
21 Correct 186 ms 2420 KB Output is correct
22 Correct 202 ms 2380 KB Output is correct
23 Correct 129 ms 2396 KB Output is correct
24 Correct 265 ms 2552 KB Output is correct
25 Correct 272 ms 2420 KB Output is correct
26 Correct 306 ms 2376 KB Output is correct
27 Correct 268 ms 2508 KB Output is correct
28 Correct 284 ms 2380 KB Output is correct
29 Correct 287 ms 2416 KB Output is correct
30 Correct 263 ms 1364 KB Output is correct
31 Correct 284 ms 2424 KB Output is correct
32 Correct 263 ms 2396 KB Output is correct
33 Correct 278 ms 2380 KB Output is correct
34 Correct 257 ms 2376 KB Output is correct
35 Correct 291 ms 2340 KB Output is correct
36 Correct 257 ms 2384 KB Output is correct
37 Correct 575 ms 2384 KB Output is correct
38 Correct 592 ms 2376 KB Output is correct
39 Correct 631 ms 2376 KB Output is correct
40 Correct 761 ms 2512 KB Output is correct
41 Correct 714 ms 2380 KB Output is correct
42 Correct 728 ms 2504 KB Output is correct
43 Correct 755 ms 2548 KB Output is correct
44 Correct 768 ms 2508 KB Output is correct
45 Correct 777 ms 2504 KB Output is correct
46 Correct 756 ms 2376 KB Output is correct
47 Correct 742 ms 2416 KB Output is correct
48 Correct 757 ms 2508 KB Output is correct
49 Correct 720 ms 2424 KB Output is correct
50 Correct 732 ms 2500 KB Output is correct
51 Correct 622 ms 1364 KB Output is correct
52 Correct 858 ms 2504 KB Output is correct
53 Correct 931 ms 2628 KB Output is correct
54 Execution timed out 1091 ms 2632 KB Time limit exceeded
55 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2432 KB Output is correct
2 Correct 16 ms 2400 KB Output is correct
3 Correct 8 ms 1364 KB Output is correct
4 Correct 12 ms 2396 KB Output is correct
5 Correct 32 ms 2348 KB Output is correct
6 Correct 22 ms 2400 KB Output is correct
7 Correct 18 ms 2396 KB Output is correct
8 Correct 37 ms 2376 KB Output is correct
9 Correct 28 ms 1364 KB Output is correct
10 Correct 79 ms 2380 KB Output is correct
11 Correct 80 ms 2392 KB Output is correct
12 Correct 76 ms 2388 KB Output is correct
13 Correct 62 ms 1364 KB Output is correct
14 Correct 75 ms 2376 KB Output is correct
15 Correct 79 ms 2388 KB Output is correct
16 Correct 87 ms 2388 KB Output is correct
17 Correct 48 ms 2380 KB Output is correct
18 Correct 64 ms 2384 KB Output is correct
19 Correct 71 ms 2376 KB Output is correct
20 Correct 81 ms 2392 KB Output is correct
21 Correct 186 ms 2420 KB Output is correct
22 Correct 202 ms 2380 KB Output is correct
23 Correct 129 ms 2396 KB Output is correct
24 Correct 265 ms 2552 KB Output is correct
25 Correct 272 ms 2420 KB Output is correct
26 Correct 306 ms 2376 KB Output is correct
27 Correct 268 ms 2508 KB Output is correct
28 Correct 284 ms 2380 KB Output is correct
29 Correct 287 ms 2416 KB Output is correct
30 Correct 263 ms 1364 KB Output is correct
31 Correct 284 ms 2424 KB Output is correct
32 Correct 263 ms 2396 KB Output is correct
33 Correct 278 ms 2380 KB Output is correct
34 Correct 257 ms 2376 KB Output is correct
35 Correct 291 ms 2340 KB Output is correct
36 Correct 257 ms 2384 KB Output is correct
37 Correct 575 ms 2384 KB Output is correct
38 Correct 592 ms 2376 KB Output is correct
39 Correct 631 ms 2376 KB Output is correct
40 Correct 761 ms 2512 KB Output is correct
41 Correct 714 ms 2380 KB Output is correct
42 Correct 728 ms 2504 KB Output is correct
43 Correct 755 ms 2548 KB Output is correct
44 Correct 768 ms 2508 KB Output is correct
45 Correct 777 ms 2504 KB Output is correct
46 Correct 756 ms 2376 KB Output is correct
47 Correct 742 ms 2416 KB Output is correct
48 Correct 757 ms 2508 KB Output is correct
49 Correct 720 ms 2424 KB Output is correct
50 Correct 732 ms 2500 KB Output is correct
51 Correct 622 ms 1364 KB Output is correct
52 Correct 858 ms 2504 KB Output is correct
53 Correct 931 ms 2628 KB Output is correct
54 Execution timed out 1091 ms 2632 KB Time limit exceeded
55 Halted 0 ms 0 KB -