oj.uz

Submission #923027

# Submission time Handle Problem Language Result Execution time Memory
923027 2024-02-06T12:55:08 Z penguin133 Bootfall (IZhO17_bootfall) C++17
28 / 100
 1000 ms 38996 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

bitset <501*501*2>dp[505], dp2[505];
int n, A[505];
const int os = 500 * 500;

bool chk(int a, int b){
	if(os - a - b >= 0 && dp[n & 1][os - a - b])return 1;
	if(os - a + b >= 0 && os - a + b <= 2 * os && dp[n & 1][os - a + b])return 1;
	if(os + a - b >= 0 && os + a - b <= 2 * os && dp[n & 1][os + a - b])return 1;
	if(os + a + b <= 2 * os && dp[n & 1][os + a + b])return 1;
	return 0;
}

void solve(){
	cin >> n;
	for(int i = 1; i <= n; i++)cin >> A[i];
	//for(int i = 0; i <= 2 * os; i++)dp[0][i] = 0
	dp[0][os] = dp2[n + 1][os] = 1;
	for(int i = 1; i <= n; i++){
		dp[i] |= (dp[i - 1] >> A[i]);
		dp[i] |= (dp[i - 1] << A[i]);
	}
	for(int i = n; i >= 1; i--){
		dp2[i] |= (dp2[i + 1] >> A[i]);
		dp2[i] |= (dp2[i + 1] << A[i]);
	}
	if(!dp[n][os]){
		cout << 0;
		return;
	}
	set <int> s;
	for(int i = 1; i <= os; i++)s.insert(i);
	for(int i = 1; i <= n; i++){
		/*
		bitset <501*501*2> tmp = dp[i - 1], tmp2;
		for(int j = 0; j <= os; j++){
			if(dp2[i + 1][os - j] || dp2[i + 1][os + j]){
				if(1)tmp2 |= (tmp >> j), tmp2 |= (tmp << j);
			}
		}
		*/
		bitset <501 * 501 * 2> tmp;
		tmp[os] = 1;
		for(int j = 1; j <= n; j++){
			if(j == i)continue;
			tmp = (tmp >> A[j]) | (tmp << A[j]);
		}
		for(int j = 0; j <= os; j++)if(!tmp[os - j] && !tmp[os + j])s.erase(j);
	}
	cout << (int)s.size() << '\n';
	for(auto i : s)cout << i << ' ';
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

bootfall.cpp:66:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   66 | main(){
      | ^~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 16468 KB Output is correct
2 Correct 59 ms 16464 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 58 ms 16648 KB Output is correct
5 Correct 81 ms 16652 KB Output is correct
6 Correct 62 ms 16532 KB Output is correct
7 Correct 58 ms 16648 KB Output is correct
8 Correct 72 ms 16468 KB Output is correct
9 Correct 67 ms 16464 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 16468 KB Output is correct
2 Correct 59 ms 16464 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 58 ms 16648 KB Output is correct
5 Correct 81 ms 16652 KB Output is correct
6 Correct 62 ms 16532 KB Output is correct
7 Correct 58 ms 16648 KB Output is correct
8 Correct 72 ms 16468 KB Output is correct
9 Correct 67 ms 16464 KB Output is correct
10 Correct 110 ms 16720 KB Output is correct
11 Correct 112 ms 16468 KB Output is correct
12 Correct 109 ms 16476 KB Output is correct
13 Correct 100 ms 16468 KB Output is correct
14 Correct 113 ms 16468 KB Output is correct
15 Correct 116 ms 16648 KB Output is correct
16 Correct 118 ms 16412 KB Output is correct
17 Correct 84 ms 16468 KB Output is correct
18 Correct 97 ms 16644 KB Output is correct
19 Correct 110 ms 16648 KB Output is correct
20 Correct 105 ms 16648 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 16468 KB Output is correct
2 Correct 59 ms 16464 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 58 ms 16648 KB Output is correct
5 Correct 81 ms 16652 KB Output is correct
6 Correct 62 ms 16532 KB Output is correct
7 Correct 58 ms 16648 KB Output is correct
8 Correct 72 ms 16468 KB Output is correct
9 Correct 67 ms 16464 KB Output is correct
10 Correct 110 ms 16720 KB Output is correct
11 Correct 112 ms 16468 KB Output is correct
12 Correct 109 ms 16476 KB Output is correct
13 Correct 100 ms 16468 KB Output is correct
14 Correct 113 ms 16468 KB Output is correct
15 Correct 116 ms 16648 KB Output is correct
16 Correct 118 ms 16412 KB Output is correct
17 Correct 84 ms 16468 KB Output is correct
18 Correct 97 ms 16644 KB Output is correct
19 Correct 110 ms 16648 KB Output is correct
20 Correct 105 ms 16648 KB Output is correct
21 Correct 279 ms 20748 KB Output is correct
22 Correct 338 ms 24852 KB Output is correct
23 Correct 213 ms 20564 KB Output is correct
24 Correct 500 ms 24860 KB Output is correct
25 Correct 495 ms 24660 KB Output is correct
26 Correct 527 ms 26916 KB Output is correct
27 Correct 494 ms 26960 KB Output is correct
28 Correct 484 ms 26904 KB Output is correct
29 Correct 468 ms 26892 KB Output is correct
30 Correct 402 ms 26704 KB Output is correct
31 Correct 503 ms 26708 KB Output is correct
32 Correct 522 ms 26912 KB Output is correct
33 Correct 433 ms 27160 KB Output is correct
34 Correct 429 ms 26704 KB Output is correct
35 Correct 434 ms 26908 KB Output is correct
36 Correct 498 ms 26908 KB Output is correct

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 16468 KB Output is correct
2 Correct 59 ms 16464 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 58 ms 16648 KB Output is correct
5 Correct 81 ms 16652 KB Output is correct
6 Correct 62 ms 16532 KB Output is correct
7 Correct 58 ms 16648 KB Output is correct
8 Correct 72 ms 16468 KB Output is correct
9 Correct 67 ms 16464 KB Output is correct
10 Correct 110 ms 16720 KB Output is correct
11 Correct 112 ms 16468 KB Output is correct
12 Correct 109 ms 16476 KB Output is correct
13 Correct 100 ms 16468 KB Output is correct
14 Correct 113 ms 16468 KB Output is correct
15 Correct 116 ms 16648 KB Output is correct
16 Correct 118 ms 16412 KB Output is correct
17 Correct 84 ms 16468 KB Output is correct
18 Correct 97 ms 16644 KB Output is correct
19 Correct 110 ms 16648 KB Output is correct
20 Correct 105 ms 16648 KB Output is correct
21 Correct 279 ms 20748 KB Output is correct
22 Correct 338 ms 24852 KB Output is correct
23 Correct 213 ms 20564 KB Output is correct
24 Correct 500 ms 24860 KB Output is correct
25 Correct 495 ms 24660 KB Output is correct
26 Correct 527 ms 26916 KB Output is correct
27 Correct 494 ms 26960 KB Output is correct
28 Correct 484 ms 26904 KB Output is correct
29 Correct 468 ms 26892 KB Output is correct
30 Correct 402 ms 26704 KB Output is correct
31 Correct 503 ms 26708 KB Output is correct
32 Correct 522 ms 26912 KB Output is correct
33 Correct 433 ms 27160 KB Output is correct
34 Correct 429 ms 26704 KB Output is correct
35 Correct 434 ms 26908 KB Output is correct
36 Correct 498 ms 26908 KB Output is correct
37 Execution timed out 1075 ms 38996 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 16468 KB Output is correct
2 Correct 59 ms 16464 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 58 ms 16648 KB Output is correct
5 Correct 81 ms 16652 KB Output is correct
6 Correct 62 ms 16532 KB Output is correct
7 Correct 58 ms 16648 KB Output is correct
8 Correct 72 ms 16468 KB Output is correct
9 Correct 67 ms 16464 KB Output is correct
10 Correct 110 ms 16720 KB Output is correct
11 Correct 112 ms 16468 KB Output is correct
12 Correct 109 ms 16476 KB Output is correct
13 Correct 100 ms 16468 KB Output is correct
14 Correct 113 ms 16468 KB Output is correct
15 Correct 116 ms 16648 KB Output is correct
16 Correct 118 ms 16412 KB Output is correct
17 Correct 84 ms 16468 KB Output is correct
18 Correct 97 ms 16644 KB Output is correct
19 Correct 110 ms 16648 KB Output is correct
20 Correct 105 ms 16648 KB Output is correct
21 Correct 279 ms 20748 KB Output is correct
22 Correct 338 ms 24852 KB Output is correct
23 Correct 213 ms 20564 KB Output is correct
24 Correct 500 ms 24860 KB Output is correct
25 Correct 495 ms 24660 KB Output is correct
26 Correct 527 ms 26916 KB Output is correct
27 Correct 494 ms 26960 KB Output is correct
28 Correct 484 ms 26904 KB Output is correct
29 Correct 468 ms 26892 KB Output is correct
30 Correct 402 ms 26704 KB Output is correct
31 Correct 503 ms 26708 KB Output is correct
32 Correct 522 ms 26912 KB Output is correct
33 Correct 433 ms 27160 KB Output is correct
34 Correct 429 ms 26704 KB Output is correct
35 Correct 434 ms 26908 KB Output is correct
36 Correct 498 ms 26908 KB Output is correct
37 Execution timed out 1075 ms 38996 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 16468 KB Output is correct
2 Correct 59 ms 16464 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 58 ms 16648 KB Output is correct
5 Correct 81 ms 16652 KB Output is correct
6 Correct 62 ms 16532 KB Output is correct
7 Correct 58 ms 16648 KB Output is correct
8 Correct 72 ms 16468 KB Output is correct
9 Correct 67 ms 16464 KB Output is correct
10 Correct 110 ms 16720 KB Output is correct
11 Correct 112 ms 16468 KB Output is correct
12 Correct 109 ms 16476 KB Output is correct
13 Correct 100 ms 16468 KB Output is correct
14 Correct 113 ms 16468 KB Output is correct
15 Correct 116 ms 16648 KB Output is correct
16 Correct 118 ms 16412 KB Output is correct
17 Correct 84 ms 16468 KB Output is correct
18 Correct 97 ms 16644 KB Output is correct
19 Correct 110 ms 16648 KB Output is correct
20 Correct 105 ms 16648 KB Output is correct
21 Correct 279 ms 20748 KB Output is correct
22 Correct 338 ms 24852 KB Output is correct
23 Correct 213 ms 20564 KB Output is correct
24 Correct 500 ms 24860 KB Output is correct
25 Correct 495 ms 24660 KB Output is correct
26 Correct 527 ms 26916 KB Output is correct
27 Correct 494 ms 26960 KB Output is correct
28 Correct 484 ms 26904 KB Output is correct
29 Correct 468 ms 26892 KB Output is correct
30 Correct 402 ms 26704 KB Output is correct
31 Correct 503 ms 26708 KB Output is correct
32 Correct 522 ms 26912 KB Output is correct
33 Correct 433 ms 27160 KB Output is correct
34 Correct 429 ms 26704 KB Output is correct
35 Correct 434 ms 26908 KB Output is correct
36 Correct 498 ms 26908 KB Output is correct
37 Execution timed out 1075 ms 38996 KB Time limit exceeded
38 Halted 0 ms 0 KB -