oj.uz

Submission #1077063

# Submission time Handle Problem Language Result Execution time Memory
1077063 2024-08-26T22:09:38 Z xnqs Bootfall (IZhO17_bootfall) C++17
100 / 100
 141 ms 3040 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>
#include <cstdint>

int x;
int arr[505];
uint32_t knapsack[125005];
int freq[250005];

void knapsack_add(int val) {
	for (int i = 125004; i >= val; i--) {
		knapsack[i] += knapsack[i-val];
	}
}

void knapsack_remove(int val) {
	for (int i = 0; i < 125005-val; i++) {
		knapsack[i+val] -= knapsack[i];
	}
}

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

	std::cin >> x;

	int sum = 0;
	knapsack[0] = 1;
	for (int i = 1; i <= x; i++) {
		std::cin >> arr[i];
		sum += arr[i];
		knapsack_add(arr[i]);
	}

#if 0
	for (int i = 0; i <= sum; i++) {
		std::cout << knapsack[i] << " ";
	}
	std::cout << "\n";
#endif

	if (sum%2==1) {
		std::cout << "0\n";
		return 0;
	}
	if (!knapsack[sum/2]) {
		std::cout << "0\n";
		return 0;
	}

	for (int i = x; i >= 1; i--) {
		sum -= arr[i];
		knapsack_remove(arr[i]);
		if (i+1<=x) {
			sum += arr[i+1];
			knapsack_add(arr[i+1]);
		}

		for (int i = 0; i <= sum/2; i++) {
			freq[sum-i-i] += !!knapsack[i];
		}

#if 0
		for (int i = 0; i <= sum; i++) {
			std::cout << knapsack[i] << " ";
		}
		std::cout << "\n";
#endif
	}

	std::vector<int> ret;
	for (int i = 1; i < 250005; i++) {
#if 0
		if (i<=10) {
			std::cout << i << " " << freq[i] << "\n";
		}
#endif
		if (freq[i]==x) {
			ret.emplace_back(i);
		}
	}

	std::cout << ret.size() << "\n";
	for (const auto& i : ret) {
		std::cout << i << " ";
	}
	std::cout << "\n";
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 2 ms 788 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Correct 3 ms 860 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 2 ms 788 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Correct 3 ms 860 KB Output is correct
10 Correct 6 ms 860 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 7 ms 860 KB Output is correct
13 Correct 6 ms 860 KB Output is correct
14 Correct 7 ms 956 KB Output is correct
15 Correct 7 ms 860 KB Output is correct
16 Correct 7 ms 860 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 6 ms 952 KB Output is correct
19 Correct 6 ms 860 KB Output is correct
20 Correct 6 ms 860 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 2 ms 788 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Correct 3 ms 860 KB Output is correct
10 Correct 6 ms 860 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 7 ms 860 KB Output is correct
13 Correct 6 ms 860 KB Output is correct
14 Correct 7 ms 956 KB Output is correct
15 Correct 7 ms 860 KB Output is correct
16 Correct 7 ms 860 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 6 ms 952 KB Output is correct
19 Correct 6 ms 860 KB Output is correct
20 Correct 6 ms 860 KB Output is correct
21 Correct 20 ms 860 KB Output is correct
22 Correct 15 ms 860 KB Output is correct
23 Correct 12 ms 960 KB Output is correct
24 Correct 19 ms 856 KB Output is correct
25 Correct 19 ms 984 KB Output is correct
26 Correct 20 ms 856 KB Output is correct
27 Correct 20 ms 860 KB Output is correct
28 Correct 20 ms 956 KB Output is correct
29 Correct 20 ms 860 KB Output is correct
30 Correct 19 ms 860 KB Output is correct
31 Correct 20 ms 968 KB Output is correct
32 Correct 20 ms 860 KB Output is correct
33 Correct 19 ms 860 KB Output is correct
34 Correct 20 ms 856 KB Output is correct
35 Correct 19 ms 860 KB Output is correct
36 Correct 20 ms 972 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 2 ms 788 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Correct 3 ms 860 KB Output is correct
10 Correct 6 ms 860 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 7 ms 860 KB Output is correct
13 Correct 6 ms 860 KB Output is correct
14 Correct 7 ms 956 KB Output is correct
15 Correct 7 ms 860 KB Output is correct
16 Correct 7 ms 860 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 6 ms 952 KB Output is correct
19 Correct 6 ms 860 KB Output is correct
20 Correct 6 ms 860 KB Output is correct
21 Correct 20 ms 860 KB Output is correct
22 Correct 15 ms 860 KB Output is correct
23 Correct 12 ms 960 KB Output is correct
24 Correct 19 ms 856 KB Output is correct
25 Correct 19 ms 984 KB Output is correct
26 Correct 20 ms 856 KB Output is correct
27 Correct 20 ms 860 KB Output is correct
28 Correct 20 ms 956 KB Output is correct
29 Correct 20 ms 860 KB Output is correct
30 Correct 19 ms 860 KB Output is correct
31 Correct 20 ms 968 KB Output is correct
32 Correct 20 ms 860 KB Output is correct
33 Correct 19 ms 860 KB Output is correct
34 Correct 20 ms 856 KB Output is correct
35 Correct 19 ms 860 KB Output is correct
36 Correct 20 ms 972 KB Output is correct
37 Correct 40 ms 1116 KB Output is correct
38 Correct 41 ms 1008 KB Output is correct
39 Correct 50 ms 1168 KB Output is correct
40 Correct 54 ms 1104 KB Output is correct
41 Correct 56 ms 1112 KB Output is correct
42 Correct 50 ms 1204 KB Output is correct
43 Correct 51 ms 1360 KB Output is correct
44 Correct 51 ms 1456 KB Output is correct
45 Correct 59 ms 1364 KB Output is correct
46 Correct 53 ms 960 KB Output is correct
47 Correct 51 ms 1108 KB Output is correct
48 Correct 52 ms 1360 KB Output is correct
49 Correct 62 ms 1188 KB Output is correct
50 Correct 60 ms 1116 KB Output is correct
51 Correct 15 ms 860 KB Output is correct
52 Correct 94 ms 1460 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 2 ms 788 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Correct 3 ms 860 KB Output is correct
10 Correct 6 ms 860 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 7 ms 860 KB Output is correct
13 Correct 6 ms 860 KB Output is correct
14 Correct 7 ms 956 KB Output is correct
15 Correct 7 ms 860 KB Output is correct
16 Correct 7 ms 860 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 6 ms 952 KB Output is correct
19 Correct 6 ms 860 KB Output is correct
20 Correct 6 ms 860 KB Output is correct
21 Correct 20 ms 860 KB Output is correct
22 Correct 15 ms 860 KB Output is correct
23 Correct 12 ms 960 KB Output is correct
24 Correct 19 ms 856 KB Output is correct
25 Correct 19 ms 984 KB Output is correct
26 Correct 20 ms 856 KB Output is correct
27 Correct 20 ms 860 KB Output is correct
28 Correct 20 ms 956 KB Output is correct
29 Correct 20 ms 860 KB Output is correct
30 Correct 19 ms 860 KB Output is correct
31 Correct 20 ms 968 KB Output is correct
32 Correct 20 ms 860 KB Output is correct
33 Correct 19 ms 860 KB Output is correct
34 Correct 20 ms 856 KB Output is correct
35 Correct 19 ms 860 KB Output is correct
36 Correct 20 ms 972 KB Output is correct
37 Correct 40 ms 1116 KB Output is correct
38 Correct 41 ms 1008 KB Output is correct
39 Correct 50 ms 1168 KB Output is correct
40 Correct 54 ms 1104 KB Output is correct
41 Correct 56 ms 1112 KB Output is correct
42 Correct 50 ms 1204 KB Output is correct
43 Correct 51 ms 1360 KB Output is correct
44 Correct 51 ms 1456 KB Output is correct
45 Correct 59 ms 1364 KB Output is correct
46 Correct 53 ms 960 KB Output is correct
47 Correct 51 ms 1108 KB Output is correct
48 Correct 52 ms 1360 KB Output is correct
49 Correct 62 ms 1188 KB Output is correct
50 Correct 60 ms 1116 KB Output is correct
51 Correct 15 ms 860 KB Output is correct
52 Correct 94 ms 1460 KB Output is correct
53 Correct 61 ms 1364 KB Output is correct
54 Correct 101 ms 1400 KB Output is correct
55 Correct 113 ms 1748 KB Output is correct
56 Correct 63 ms 1364 KB Output is correct
57 Correct 78 ms 2028 KB Output is correct
58 Correct 73 ms 1460 KB Output is correct
59 Correct 76 ms 1620 KB Output is correct
60 Correct 18 ms 856 KB Output is correct
61 Correct 105 ms 1748 KB Output is correct
62 Correct 78 ms 1748 KB Output is correct
63 Correct 77 ms 1728 KB Output is correct
64 Correct 81 ms 1728 KB Output is correct
65 Correct 71 ms 952 KB Output is correct
66 Correct 64 ms 1140 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 2 ms 788 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 3 ms 860 KB Output is correct
9 Correct 3 ms 860 KB Output is correct
10 Correct 6 ms 860 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 7 ms 860 KB Output is correct
13 Correct 6 ms 860 KB Output is correct
14 Correct 7 ms 956 KB Output is correct
15 Correct 7 ms 860 KB Output is correct
16 Correct 7 ms 860 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 6 ms 952 KB Output is correct
19 Correct 6 ms 860 KB Output is correct
20 Correct 6 ms 860 KB Output is correct
21 Correct 20 ms 860 KB Output is correct
22 Correct 15 ms 860 KB Output is correct
23 Correct 12 ms 960 KB Output is correct
24 Correct 19 ms 856 KB Output is correct
25 Correct 19 ms 984 KB Output is correct
26 Correct 20 ms 856 KB Output is correct
27 Correct 20 ms 860 KB Output is correct
28 Correct 20 ms 956 KB Output is correct
29 Correct 20 ms 860 KB Output is correct
30 Correct 19 ms 860 KB Output is correct
31 Correct 20 ms 968 KB Output is correct
32 Correct 20 ms 860 KB Output is correct
33 Correct 19 ms 860 KB Output is correct
34 Correct 20 ms 856 KB Output is correct
35 Correct 19 ms 860 KB Output is correct
36 Correct 20 ms 972 KB Output is correct
37 Correct 40 ms 1116 KB Output is correct
38 Correct 41 ms 1008 KB Output is correct
39 Correct 50 ms 1168 KB Output is correct
40 Correct 54 ms 1104 KB Output is correct
41 Correct 56 ms 1112 KB Output is correct
42 Correct 50 ms 1204 KB Output is correct
43 Correct 51 ms 1360 KB Output is correct
44 Correct 51 ms 1456 KB Output is correct
45 Correct 59 ms 1364 KB Output is correct
46 Correct 53 ms 960 KB Output is correct
47 Correct 51 ms 1108 KB Output is correct
48 Correct 52 ms 1360 KB Output is correct
49 Correct 62 ms 1188 KB Output is correct
50 Correct 60 ms 1116 KB Output is correct
51 Correct 15 ms 860 KB Output is correct
52 Correct 94 ms 1460 KB Output is correct
53 Correct 61 ms 1364 KB Output is correct
54 Correct 101 ms 1400 KB Output is correct
55 Correct 113 ms 1748 KB Output is correct
56 Correct 63 ms 1364 KB Output is correct
57 Correct 78 ms 2028 KB Output is correct
58 Correct 73 ms 1460 KB Output is correct
59 Correct 76 ms 1620 KB Output is correct
60 Correct 18 ms 856 KB Output is correct
61 Correct 105 ms 1748 KB Output is correct
62 Correct 78 ms 1748 KB Output is correct
63 Correct 77 ms 1728 KB Output is correct
64 Correct 81 ms 1728 KB Output is correct
65 Correct 71 ms 952 KB Output is correct
66 Correct 64 ms 1140 KB Output is correct
67 Correct 87 ms 1632 KB Output is correct
68 Correct 32 ms 936 KB Output is correct
69 Correct 137 ms 2868 KB Output is correct
70 Correct 127 ms 2080 KB Output is correct
71 Correct 121 ms 2104 KB Output is correct
72 Correct 136 ms 1364 KB Output is correct
73 Correct 113 ms 1420 KB Output is correct
74 Correct 137 ms 3028 KB Output is correct
75 Correct 131 ms 2524 KB Output is correct
76 Correct 132 ms 3040 KB Output is correct
77 Correct 141 ms 3004 KB Output is correct