oj.uz

Submission #922894

# Submission time Handle Problem Language Result Execution time Memory
922894 2024-02-06T09:03:13 Z penguin133 Bootfall (IZhO17_bootfall) C++17
13 / 100
 1000 ms 20788 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);
			}
		}
		if(i == 2){
			//for(int j = 0; j <= os * 2; j++)if(tmp2[j])cout << j - os << ' ';
			//cout << '\n';
		}
		for(int j = 0; j <= os; j++)if(!tmp2[os - j] && !tmp2[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:62:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   62 | main(){
      | ^~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 16468 KB Output is correct
2 Correct 62 ms 16648 KB Output is correct
3 Correct 1 ms 4952 KB Output is correct
4 Correct 59 ms 16716 KB Output is correct
5 Correct 111 ms 16712 KB Output is correct
6 Correct 69 ms 16576 KB Output is correct
7 Correct 61 ms 16668 KB Output is correct
8 Correct 99 ms 16648 KB Output is correct
9 Correct 79 ms 16568 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 16468 KB Output is correct
2 Correct 62 ms 16648 KB Output is correct
3 Correct 1 ms 4952 KB Output is correct
4 Correct 59 ms 16716 KB Output is correct
5 Correct 111 ms 16712 KB Output is correct
6 Correct 69 ms 16576 KB Output is correct
7 Correct 61 ms 16668 KB Output is correct
8 Correct 99 ms 16648 KB Output is correct
9 Correct 79 ms 16568 KB Output is correct
10 Correct 106 ms 16596 KB Output is correct
11 Correct 149 ms 16492 KB Output is correct
12 Correct 130 ms 16468 KB Output is correct
13 Correct 129 ms 16496 KB Output is correct
14 Correct 155 ms 16464 KB Output is correct
15 Correct 144 ms 16708 KB Output is correct
16 Correct 153 ms 16704 KB Output is correct
17 Correct 107 ms 16712 KB Output is correct
18 Correct 129 ms 16716 KB Output is correct
19 Correct 128 ms 16712 KB Output is correct
20 Correct 109 ms 16464 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 16468 KB Output is correct
2 Correct 62 ms 16648 KB Output is correct
3 Correct 1 ms 4952 KB Output is correct
4 Correct 59 ms 16716 KB Output is correct
5 Correct 111 ms 16712 KB Output is correct
6 Correct 69 ms 16576 KB Output is correct
7 Correct 61 ms 16668 KB Output is correct
8 Correct 99 ms 16648 KB Output is correct
9 Correct 79 ms 16568 KB Output is correct
10 Correct 106 ms 16596 KB Output is correct
11 Correct 149 ms 16492 KB Output is correct
12 Correct 130 ms 16468 KB Output is correct
13 Correct 129 ms 16496 KB Output is correct
14 Correct 155 ms 16464 KB Output is correct
15 Correct 144 ms 16708 KB Output is correct
16 Correct 153 ms 16704 KB Output is correct
17 Correct 107 ms 16712 KB Output is correct
18 Correct 129 ms 16716 KB Output is correct
19 Correct 128 ms 16712 KB Output is correct
20 Correct 109 ms 16464 KB Output is correct
21 Execution timed out 1052 ms 20788 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 16468 KB Output is correct
2 Correct 62 ms 16648 KB Output is correct
3 Correct 1 ms 4952 KB Output is correct
4 Correct 59 ms 16716 KB Output is correct
5 Correct 111 ms 16712 KB Output is correct
6 Correct 69 ms 16576 KB Output is correct
7 Correct 61 ms 16668 KB Output is correct
8 Correct 99 ms 16648 KB Output is correct
9 Correct 79 ms 16568 KB Output is correct
10 Correct 106 ms 16596 KB Output is correct
11 Correct 149 ms 16492 KB Output is correct
12 Correct 130 ms 16468 KB Output is correct
13 Correct 129 ms 16496 KB Output is correct
14 Correct 155 ms 16464 KB Output is correct
15 Correct 144 ms 16708 KB Output is correct
16 Correct 153 ms 16704 KB Output is correct
17 Correct 107 ms 16712 KB Output is correct
18 Correct 129 ms 16716 KB Output is correct
19 Correct 128 ms 16712 KB Output is correct
20 Correct 109 ms 16464 KB Output is correct
21 Execution timed out 1052 ms 20788 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 16468 KB Output is correct
2 Correct 62 ms 16648 KB Output is correct
3 Correct 1 ms 4952 KB Output is correct
4 Correct 59 ms 16716 KB Output is correct
5 Correct 111 ms 16712 KB Output is correct
6 Correct 69 ms 16576 KB Output is correct
7 Correct 61 ms 16668 KB Output is correct
8 Correct 99 ms 16648 KB Output is correct
9 Correct 79 ms 16568 KB Output is correct
10 Correct 106 ms 16596 KB Output is correct
11 Correct 149 ms 16492 KB Output is correct
12 Correct 130 ms 16468 KB Output is correct
13 Correct 129 ms 16496 KB Output is correct
14 Correct 155 ms 16464 KB Output is correct
15 Correct 144 ms 16708 KB Output is correct
16 Correct 153 ms 16704 KB Output is correct
17 Correct 107 ms 16712 KB Output is correct
18 Correct 129 ms 16716 KB Output is correct
19 Correct 128 ms 16712 KB Output is correct
20 Correct 109 ms 16464 KB Output is correct
21 Execution timed out 1052 ms 20788 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 16468 KB Output is correct
2 Correct 62 ms 16648 KB Output is correct
3 Correct 1 ms 4952 KB Output is correct
4 Correct 59 ms 16716 KB Output is correct
5 Correct 111 ms 16712 KB Output is correct
6 Correct 69 ms 16576 KB Output is correct
7 Correct 61 ms 16668 KB Output is correct
8 Correct 99 ms 16648 KB Output is correct
9 Correct 79 ms 16568 KB Output is correct
10 Correct 106 ms 16596 KB Output is correct
11 Correct 149 ms 16492 KB Output is correct
12 Correct 130 ms 16468 KB Output is correct
13 Correct 129 ms 16496 KB Output is correct
14 Correct 155 ms 16464 KB Output is correct
15 Correct 144 ms 16708 KB Output is correct
16 Correct 153 ms 16704 KB Output is correct
17 Correct 107 ms 16712 KB Output is correct
18 Correct 129 ms 16716 KB Output is correct
19 Correct 128 ms 16712 KB Output is correct
20 Correct 109 ms 16464 KB Output is correct
21 Execution timed out 1052 ms 20788 KB Time limit exceeded
22 Halted 0 ms 0 KB -