Submission #37413

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
37413	2017-12-25T08:59:07 Z	HardNut	Bootfall (IZhO17_bootfall)	C++14	13 / 100	169 ms	15524 KB

bootfall

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<vector>

using namespace std;

const int N = 1e5 + 5;

typedef long long ll;

int n, a[505], dp1[105][10005], dp2[105][10005], sum;
vector<int> ans, vec;
int dp[105][10005];
bool us[105][10005];
bool used[10005];

bool is(int s, int v) {
    if (us[v][s])
        return dp[v][s];
    us[v][s] = 1;
    for (int i = 0; i <= s; i++) {
        if ((dp1[v - 1][i] && dp2[v + 1][s - i]) || (dp2[v + 1][i] && dp1[v - 1][s - i])) {
            dp[v][s] = 1;
            return 1;
        }
    }
    dp[v][s] = 0;
    return 0;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        dp[i][0] = 1;
        cin >> a[i];
        sum += a[i];
    }
    if (sum % 2 == 1) {
        cout << 0;
        return 0;
    }
    bool u = 0;
    dp1[0][0] = 1;
    for (int i = 1; i <= n; i++) {
        for (int j = 0; j <= sum; j++) {
            if (dp1[i - 1][j]) {
                if (j + a[i] == sum / 2)
                    u = 1;
                dp1[i][j + a[i]] = 1;
                dp1[i][j] = 1;
                dp[i][j + a[i]] = 1;
            }
        }
    }
    if (u == 0) {
        cout << 0;
        return 0;
    }
    dp2[n + 1][0] = 1;
    for (int i = n; i >= 1; i--) {
        for (int j = 0; j <= sum; j++) {
            if (dp2[i + 1][j]) {
                dp2[i][j + a[i]] = 1;
                dp2[i][j] = 1;
                dp[i][j + a[i]] = 1;
            }
        }
    }
    for (int i = 0; i <= sum; i++) {
        if (dp1[n - 1][i])
            vec.push_back(i);
    }
    for (int i : vec) {
        int x = abs(i - (sum - a[n] - i));
        bool u = 0;
        for (int j = 1; j <= n; j++) {
            if ((sum - a[j] + x) % 2) {
                u = 1;
                break;
            }
            if (!is((sum - a[j] + x) / 2, j)) {
                u = 1;
                break;
            }
        }
        if (!u) {
            if (!used[x]) {
                ans.push_back(x);
                used[x] = 1;
            }
        }
    }
    cout << ans.size() << "\n";
    for (int i = ans.size() - 1; i >= 0; i--)
        cout << ans[i] << " ";
}

Subtask #1
6.0 / 6.0

#	Verdict	Memory	Grader output
1	Correct	15524 KB	Output is correct
2	Correct	15524 KB	Output is correct
3	Correct	15524 KB	Output is correct
4	Correct	15524 KB	Output is correct
5	Correct	15524 KB	Output is correct
6	Correct	15524 KB	Output is correct
7	Correct	15524 KB	Output is correct
8	Correct	15524 KB	Output is correct
9	Correct	15524 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Memory	Grader output
1	Correct	15524 KB	Output is correct
2	Correct	15524 KB	Output is correct
3	Correct	15524 KB	Output is correct
4	Correct	15524 KB	Output is correct
5	Correct	15524 KB	Output is correct
6	Correct	15524 KB	Output is correct
7	Correct	15524 KB	Output is correct
8	Correct	15524 KB	Output is correct
9	Correct	15524 KB	Output is correct
10	Correct	15524 KB	Output is correct
11	Correct	15524 KB	Output is correct
12	Correct	15524 KB	Output is correct
13	Correct	15524 KB	Output is correct
14	Correct	15524 KB	Output is correct
15	Correct	15524 KB	Output is correct
16	Correct	15524 KB	Output is correct
17	Correct	15524 KB	Output is correct
18	Correct	15524 KB	Output is correct
19	Correct	15524 KB	Output is correct
20	Correct	15524 KB	Output is correct

Subtask #3
0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	15524 KB	Output is correct
2	Correct	0 ms	15524 KB	Output is correct
3	Correct	0 ms	15524 KB	Output is correct
4	Correct	0 ms	15524 KB	Output is correct
5	Correct	0 ms	15524 KB	Output is correct
6	Correct	0 ms	15524 KB	Output is correct
7	Correct	0 ms	15524 KB	Output is correct
8	Correct	0 ms	15524 KB	Output is correct
9	Correct	0 ms	15524 KB	Output is correct
10	Correct	0 ms	15524 KB	Output is correct
11	Correct	0 ms	15524 KB	Output is correct
12	Correct	0 ms	15524 KB	Output is correct
13	Correct	0 ms	15524 KB	Output is correct
14	Correct	0 ms	15524 KB	Output is correct
15	Correct	0 ms	15524 KB	Output is correct
16	Correct	0 ms	15524 KB	Output is correct
17	Correct	0 ms	15524 KB	Output is correct
18	Correct	0 ms	15524 KB	Output is correct
19	Correct	0 ms	15524 KB	Output is correct
20	Correct	0 ms	15524 KB	Output is correct
21	Correct	46 ms	15524 KB	Output is correct
22	Correct	66 ms	15524 KB	Output is correct
23	Correct	19 ms	15524 KB	Output is correct
24	Runtime error	169 ms	15524 KB	Execution killed because of forbidden syscall writev (20)
25	Halted	0 ms	0 KB	-

Subtask #4
0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	15524 KB	Output is correct
2	Correct	0 ms	15524 KB	Output is correct
3	Correct	0 ms	15524 KB	Output is correct
4	Correct	0 ms	15524 KB	Output is correct
5	Correct	0 ms	15524 KB	Output is correct
6	Correct	0 ms	15524 KB	Output is correct
7	Correct	0 ms	15524 KB	Output is correct
8	Correct	0 ms	15524 KB	Output is correct
9	Correct	0 ms	15524 KB	Output is correct
10	Correct	0 ms	15524 KB	Output is correct
11	Correct	0 ms	15524 KB	Output is correct
12	Correct	0 ms	15524 KB	Output is correct
13	Correct	0 ms	15524 KB	Output is correct
14	Correct	0 ms	15524 KB	Output is correct
15	Correct	0 ms	15524 KB	Output is correct
16	Correct	0 ms	15524 KB	Output is correct
17	Correct	0 ms	15524 KB	Output is correct
18	Correct	0 ms	15524 KB	Output is correct
19	Correct	0 ms	15524 KB	Output is correct
20	Correct	0 ms	15524 KB	Output is correct
21	Correct	46 ms	15524 KB	Output is correct
22	Correct	66 ms	15524 KB	Output is correct
23	Correct	19 ms	15524 KB	Output is correct
24	Runtime error	169 ms	15524 KB	Execution killed because of forbidden syscall writev (20)
25	Halted	0 ms	0 KB	-

Subtask #5
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	15524 KB	Output is correct
2	Correct	0 ms	15524 KB	Output is correct
3	Correct	0 ms	15524 KB	Output is correct
4	Correct	0 ms	15524 KB	Output is correct
5	Correct	0 ms	15524 KB	Output is correct
6	Correct	0 ms	15524 KB	Output is correct
7	Correct	0 ms	15524 KB	Output is correct
8	Correct	0 ms	15524 KB	Output is correct
9	Correct	0 ms	15524 KB	Output is correct
10	Correct	0 ms	15524 KB	Output is correct
11	Correct	0 ms	15524 KB	Output is correct
12	Correct	0 ms	15524 KB	Output is correct
13	Correct	0 ms	15524 KB	Output is correct
14	Correct	0 ms	15524 KB	Output is correct
15	Correct	0 ms	15524 KB	Output is correct
16	Correct	0 ms	15524 KB	Output is correct
17	Correct	0 ms	15524 KB	Output is correct
18	Correct	0 ms	15524 KB	Output is correct
19	Correct	0 ms	15524 KB	Output is correct
20	Correct	0 ms	15524 KB	Output is correct
21	Correct	46 ms	15524 KB	Output is correct
22	Correct	66 ms	15524 KB	Output is correct
23	Correct	19 ms	15524 KB	Output is correct
24	Runtime error	169 ms	15524 KB	Execution killed because of forbidden syscall writev (20)
25	Halted	0 ms	0 KB	-

Subtask #6
0 / 35.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	15524 KB	Output is correct
2	Correct	0 ms	15524 KB	Output is correct
3	Correct	0 ms	15524 KB	Output is correct
4	Correct	0 ms	15524 KB	Output is correct
5	Correct	0 ms	15524 KB	Output is correct
6	Correct	0 ms	15524 KB	Output is correct
7	Correct	0 ms	15524 KB	Output is correct
8	Correct	0 ms	15524 KB	Output is correct
9	Correct	0 ms	15524 KB	Output is correct
10	Correct	0 ms	15524 KB	Output is correct
11	Correct	0 ms	15524 KB	Output is correct
12	Correct	0 ms	15524 KB	Output is correct
13	Correct	0 ms	15524 KB	Output is correct
14	Correct	0 ms	15524 KB	Output is correct
15	Correct	0 ms	15524 KB	Output is correct
16	Correct	0 ms	15524 KB	Output is correct
17	Correct	0 ms	15524 KB	Output is correct
18	Correct	0 ms	15524 KB	Output is correct
19	Correct	0 ms	15524 KB	Output is correct
20	Correct	0 ms	15524 KB	Output is correct
21	Correct	46 ms	15524 KB	Output is correct
22	Correct	66 ms	15524 KB	Output is correct
23	Correct	19 ms	15524 KB	Output is correct
24	Runtime error	169 ms	15524 KB	Execution killed because of forbidden syscall writev (20)
25	Halted	0 ms	0 KB	-

Submission #37413

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 7.0 / 7.0

Subtask #3 0 / 15.0

Subtask #4 0 / 16.0

Subtask #5 0 / 21.0

Subtask #6 0 / 35.0

Subtask #1
6.0 / 6.0

Subtask #2
7.0 / 7.0

Subtask #3
0 / 15.0

Subtask #4
0 / 16.0

Subtask #5
0 / 21.0

Subtask #6
0 / 35.0