oj.uz

Submission #404382

# Submission time Handle Problem Language Result Execution time Memory
404382 2021-05-14T10:00:16 Z fvogel499 Bootfall (IZhO17_bootfall) C++14
100 / 100
 634 ms 31772 KB 
#include <iostream>
#include <bitset>

using namespace std;


const int siz = 250001;

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

    int n;
    cin >> n;

    int raw [n];
    for (int i = 0; i < n; i++) cin >> raw[i];

    bitset<siz> check(0);
    check[0] = 1;
    int checkSum = 0;
    for (int i = 0; i < n; i++) {
        check |= check<<raw[i];
        checkSum += raw[i];
    }
    if (checkSum%2 == 1 or check[checkSum/2] == 0) {
        cout << 0;
        return 0;
    }

    bitset<siz> startToEnd [n];
    startToEnd[0] = bitset<siz>(0);
    startToEnd[0][0] = 1;
    for (int i = 1; i < n; i++) {
        startToEnd[i] = startToEnd[i-1]|(startToEnd[i-1]<<raw[i-1]);
    }

    bitset<siz> endToStart [n];
    endToStart[n-1] = bitset<siz>(0);
    endToStart[n-1][0] = 1;
    for (int i = n-2; i >= 0; i--) {
        endToStart[i] = endToStart[i+1]|(endToStart[i+1]<<raw[i+1]);
    }

    bitset<siz> even;
    bitset<siz> uneven;
    even.set();
    uneven.set();
    even[0] = 0;
    bool evenKilled = false;
    bool unevenKilled = false;
    bitset<siz> cur;
    int locSum;
    for (int i = 0; i < n; i++) {
        if (i > n/2) {
            cur = startToEnd[i];
            for (int j = i+1; j < n; j++) cur |= cur<<raw[j];
        }
        else {
            cur = endToStart[i];
            for (int j = i-1; j >= 0; j--) cur |= cur<<raw[j];
        }
        locSum = checkSum-raw[i];
        if (locSum%2 == 0) {
            even &= cur>>(locSum/2);
            if (!unevenKilled) {
                uneven &= 0;
                unevenKilled = true;
            }
        }
        else {
            uneven &= cur>>(locSum/2+1);
            if (!evenKilled) {
                even &= 0;
                evenKilled = true;
            }
        }
    }

    cout << even.count()+uneven.count() << endl;
    for (int i = 0; i < siz; i++) {
        if (even[i]) cout << i*2 << " ";
        if (uneven[i]) cout << i*2+1 << " ";
    }
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 2 ms 844 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 2 ms 1100 KB Output is correct
6 Correct 2 ms 972 KB Output is correct
7 Correct 2 ms 844 KB Output is correct
8 Correct 3 ms 1228 KB Output is correct
9 Correct 3 ms 1100 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 2 ms 844 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 2 ms 1100 KB Output is correct
6 Correct 2 ms 972 KB Output is correct
7 Correct 2 ms 844 KB Output is correct
8 Correct 3 ms 1228 KB Output is correct
9 Correct 3 ms 1100 KB Output is correct
10 Correct 5 ms 2320 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 5 ms 2252 KB Output is correct
13 Correct 4 ms 1996 KB Output is correct
14 Correct 5 ms 2200 KB Output is correct
15 Correct 5 ms 2124 KB Output is correct
16 Correct 6 ms 2380 KB Output is correct
17 Correct 3 ms 1484 KB Output is correct
18 Correct 4 ms 1868 KB Output is correct
19 Correct 4 ms 1996 KB Output is correct
20 Correct 5 ms 2252 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 2 ms 844 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 2 ms 1100 KB Output is correct
6 Correct 2 ms 972 KB Output is correct
7 Correct 2 ms 844 KB Output is correct
8 Correct 3 ms 1228 KB Output is correct
9 Correct 3 ms 1100 KB Output is correct
10 Correct 5 ms 2320 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 5 ms 2252 KB Output is correct
13 Correct 4 ms 1996 KB Output is correct
14 Correct 5 ms 2200 KB Output is correct
15 Correct 5 ms 2124 KB Output is correct
16 Correct 6 ms 2380 KB Output is correct
17 Correct 3 ms 1484 KB Output is correct
18 Correct 4 ms 1868 KB Output is correct
19 Correct 4 ms 1996 KB Output is correct
20 Correct 5 ms 2252 KB Output is correct
21 Correct 15 ms 4400 KB Output is correct
22 Correct 20 ms 5024 KB Output is correct
23 Correct 10 ms 3504 KB Output is correct
24 Correct 29 ms 6232 KB Output is correct
25 Correct 27 ms 6228 KB Output is correct
26 Correct 31 ms 6596 KB Output is correct
27 Correct 36 ms 6596 KB Output is correct
28 Correct 30 ms 6596 KB Output is correct
29 Correct 34 ms 6476 KB Output is correct
30 Correct 29 ms 6476 KB Output is correct
31 Correct 30 ms 6604 KB Output is correct
32 Correct 33 ms 6584 KB Output is correct
33 Correct 30 ms 6604 KB Output is correct
34 Correct 30 ms 6504 KB Output is correct
35 Correct 31 ms 6476 KB Output is correct
36 Correct 30 ms 6596 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 2 ms 844 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 2 ms 1100 KB Output is correct
6 Correct 2 ms 972 KB Output is correct
7 Correct 2 ms 844 KB Output is correct
8 Correct 3 ms 1228 KB Output is correct
9 Correct 3 ms 1100 KB Output is correct
10 Correct 5 ms 2320 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 5 ms 2252 KB Output is correct
13 Correct 4 ms 1996 KB Output is correct
14 Correct 5 ms 2200 KB Output is correct
15 Correct 5 ms 2124 KB Output is correct
16 Correct 6 ms 2380 KB Output is correct
17 Correct 3 ms 1484 KB Output is correct
18 Correct 4 ms 1868 KB Output is correct
19 Correct 4 ms 1996 KB Output is correct
20 Correct 5 ms 2252 KB Output is correct
21 Correct 15 ms 4400 KB Output is correct
22 Correct 20 ms 5024 KB Output is correct
23 Correct 10 ms 3504 KB Output is correct
24 Correct 29 ms 6232 KB Output is correct
25 Correct 27 ms 6228 KB Output is correct
26 Correct 31 ms 6596 KB Output is correct
27 Correct 36 ms 6596 KB Output is correct
28 Correct 30 ms 6596 KB Output is correct
29 Correct 34 ms 6476 KB Output is correct
30 Correct 29 ms 6476 KB Output is correct
31 Correct 30 ms 6604 KB Output is correct
32 Correct 33 ms 6584 KB Output is correct
33 Correct 30 ms 6604 KB Output is correct
34 Correct 30 ms 6504 KB Output is correct
35 Correct 31 ms 6476 KB Output is correct
36 Correct 30 ms 6596 KB Output is correct
37 Correct 103 ms 12700 KB Output is correct
38 Correct 107 ms 12716 KB Output is correct
39 Correct 167 ms 15640 KB Output is correct
40 Correct 178 ms 16996 KB Output is correct
41 Correct 179 ms 16980 KB Output is correct
42 Correct 156 ms 15812 KB Output is correct
43 Correct 150 ms 15520 KB Output is correct
44 Correct 152 ms 15684 KB Output is correct
45 Correct 158 ms 15904 KB Output is correct
46 Correct 177 ms 16984 KB Output is correct
47 Correct 155 ms 15764 KB Output is correct
48 Correct 160 ms 15812 KB Output is correct
49 Correct 157 ms 15760 KB Output is correct
50 Correct 163 ms 15756 KB Output is correct
51 Correct 4 ms 460 KB Output is correct
52 Correct 180 ms 17124 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 2 ms 844 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 2 ms 1100 KB Output is correct
6 Correct 2 ms 972 KB Output is correct
7 Correct 2 ms 844 KB Output is correct
8 Correct 3 ms 1228 KB Output is correct
9 Correct 3 ms 1100 KB Output is correct
10 Correct 5 ms 2320 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 5 ms 2252 KB Output is correct
13 Correct 4 ms 1996 KB Output is correct
14 Correct 5 ms 2200 KB Output is correct
15 Correct 5 ms 2124 KB Output is correct
16 Correct 6 ms 2380 KB Output is correct
17 Correct 3 ms 1484 KB Output is correct
18 Correct 4 ms 1868 KB Output is correct
19 Correct 4 ms 1996 KB Output is correct
20 Correct 5 ms 2252 KB Output is correct
21 Correct 15 ms 4400 KB Output is correct
22 Correct 20 ms 5024 KB Output is correct
23 Correct 10 ms 3504 KB Output is correct
24 Correct 29 ms 6232 KB Output is correct
25 Correct 27 ms 6228 KB Output is correct
26 Correct 31 ms 6596 KB Output is correct
27 Correct 36 ms 6596 KB Output is correct
28 Correct 30 ms 6596 KB Output is correct
29 Correct 34 ms 6476 KB Output is correct
30 Correct 29 ms 6476 KB Output is correct
31 Correct 30 ms 6604 KB Output is correct
32 Correct 33 ms 6584 KB Output is correct
33 Correct 30 ms 6604 KB Output is correct
34 Correct 30 ms 6504 KB Output is correct
35 Correct 31 ms 6476 KB Output is correct
36 Correct 30 ms 6596 KB Output is correct
37 Correct 103 ms 12700 KB Output is correct
38 Correct 107 ms 12716 KB Output is correct
39 Correct 167 ms 15640 KB Output is correct
40 Correct 178 ms 16996 KB Output is correct
41 Correct 179 ms 16980 KB Output is correct
42 Correct 156 ms 15812 KB Output is correct
43 Correct 150 ms 15520 KB Output is correct
44 Correct 152 ms 15684 KB Output is correct
45 Correct 158 ms 15904 KB Output is correct
46 Correct 177 ms 16984 KB Output is correct
47 Correct 155 ms 15764 KB Output is correct
48 Correct 160 ms 15812 KB Output is correct
49 Correct 157 ms 15760 KB Output is correct
50 Correct 163 ms 15756 KB Output is correct
51 Correct 4 ms 460 KB Output is correct
52 Correct 180 ms 17124 KB Output is correct
53 Correct 217 ms 18960 KB Output is correct
54 Correct 308 ms 22084 KB Output is correct
55 Correct 311 ms 22136 KB Output is correct
56 Correct 253 ms 19268 KB Output is correct
57 Correct 295 ms 22084 KB Output is correct
58 Correct 292 ms 22020 KB Output is correct
59 Correct 312 ms 22004 KB Output is correct
60 Correct 4 ms 460 KB Output is correct
61 Correct 299 ms 22004 KB Output is correct
62 Correct 262 ms 20296 KB Output is correct
63 Correct 270 ms 20392 KB Output is correct
64 Correct 244 ms 19924 KB Output is correct
65 Correct 271 ms 19796 KB Output is correct
66 Correct 235 ms 19432 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 2 ms 844 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 2 ms 1100 KB Output is correct
6 Correct 2 ms 972 KB Output is correct
7 Correct 2 ms 844 KB Output is correct
8 Correct 3 ms 1228 KB Output is correct
9 Correct 3 ms 1100 KB Output is correct
10 Correct 5 ms 2320 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 5 ms 2252 KB Output is correct
13 Correct 4 ms 1996 KB Output is correct
14 Correct 5 ms 2200 KB Output is correct
15 Correct 5 ms 2124 KB Output is correct
16 Correct 6 ms 2380 KB Output is correct
17 Correct 3 ms 1484 KB Output is correct
18 Correct 4 ms 1868 KB Output is correct
19 Correct 4 ms 1996 KB Output is correct
20 Correct 5 ms 2252 KB Output is correct
21 Correct 15 ms 4400 KB Output is correct
22 Correct 20 ms 5024 KB Output is correct
23 Correct 10 ms 3504 KB Output is correct
24 Correct 29 ms 6232 KB Output is correct
25 Correct 27 ms 6228 KB Output is correct
26 Correct 31 ms 6596 KB Output is correct
27 Correct 36 ms 6596 KB Output is correct
28 Correct 30 ms 6596 KB Output is correct
29 Correct 34 ms 6476 KB Output is correct
30 Correct 29 ms 6476 KB Output is correct
31 Correct 30 ms 6604 KB Output is correct
32 Correct 33 ms 6584 KB Output is correct
33 Correct 30 ms 6604 KB Output is correct
34 Correct 30 ms 6504 KB Output is correct
35 Correct 31 ms 6476 KB Output is correct
36 Correct 30 ms 6596 KB Output is correct
37 Correct 103 ms 12700 KB Output is correct
38 Correct 107 ms 12716 KB Output is correct
39 Correct 167 ms 15640 KB Output is correct
40 Correct 178 ms 16996 KB Output is correct
41 Correct 179 ms 16980 KB Output is correct
42 Correct 156 ms 15812 KB Output is correct
43 Correct 150 ms 15520 KB Output is correct
44 Correct 152 ms 15684 KB Output is correct
45 Correct 158 ms 15904 KB Output is correct
46 Correct 177 ms 16984 KB Output is correct
47 Correct 155 ms 15764 KB Output is correct
48 Correct 160 ms 15812 KB Output is correct
49 Correct 157 ms 15760 KB Output is correct
50 Correct 163 ms 15756 KB Output is correct
51 Correct 4 ms 460 KB Output is correct
52 Correct 180 ms 17124 KB Output is correct
53 Correct 217 ms 18960 KB Output is correct
54 Correct 308 ms 22084 KB Output is correct
55 Correct 311 ms 22136 KB Output is correct
56 Correct 253 ms 19268 KB Output is correct
57 Correct 295 ms 22084 KB Output is correct
58 Correct 292 ms 22020 KB Output is correct
59 Correct 312 ms 22004 KB Output is correct
60 Correct 4 ms 460 KB Output is correct
61 Correct 299 ms 22004 KB Output is correct
62 Correct 262 ms 20296 KB Output is correct
63 Correct 270 ms 20392 KB Output is correct
64 Correct 244 ms 19924 KB Output is correct
65 Correct 271 ms 19796 KB Output is correct
66 Correct 235 ms 19432 KB Output is correct
67 Correct 391 ms 25064 KB Output is correct
68 Correct 5 ms 460 KB Output is correct
69 Correct 586 ms 31692 KB Output is correct
70 Correct 634 ms 31556 KB Output is correct
71 Correct 627 ms 31312 KB Output is correct
72 Correct 568 ms 31072 KB Output is correct
73 Correct 570 ms 30992 KB Output is correct
74 Correct 583 ms 31568 KB Output is correct
75 Correct 575 ms 31432 KB Output is correct
76 Correct 606 ms 31772 KB Output is correct
77 Correct 593 ms 31692 KB Output is correct