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Submission #37474

# Submission time Handle Problem Language Result Execution time Memory
37474 2017-12-25T16:14:52 Z HardNut Bootfall (IZhO17_bootfall) C++14
100 / 100
 973 ms 4824 KB 
#include<bits/stdc++.h>

using namespace std;

const int N = 250005;
const int mod = 1e9 + 7;

typedef long long ll;

int n, a[505], sum;
vector<int> vec;
int ans[N];
int dp[N];
bool used[505];

void add(int v) {
    for (int i = sum; i >= 0; i--) {
        dp[i + v] += dp[i];
        if (dp[i + v] >= mod)
            dp[i + v] -= mod;
    }
    sum += v;
}

void del(int v) {
    sum -= v;
    for (int i = 0; i <= sum; i++) {
        dp[i + v] = (dp[i + v] - dp[i] + mod);
        if (dp[i + v] >= mod)
            dp[i + v] -= mod;
    }
}

int main() {
//    freopen("bootfall.in", "r", stdin);
//    freopen("bootfall.out", "w", stdout);
    scanf("%d", &n);
    dp[0] = 1;
    for (int i = 1; i <= n; i++) {
        scanf("%d", &a[i]);
        add(a[i]);
    }
    if (sum % 2 == 1) {
        cout << 0;
        return 0;
    }
    for (int i = 1; i <= sum; i++) {
        ans[i] = 1;
    }
    if (!dp[sum / 2]) {
        cout << 0;
        return 0;
    }
    for (int i = 1; i <= n; i++) {
        if (used[a[i]])
            continue;
        used[a[i]] = 1;
        del(a[i]);
        for (int j = 1; j <= N; j++) {
            if ((sum + j) % 2) {
                ans[j] = 0;
                continue;
            }
            if (!dp[(sum + j) / 2]) {
                ans[j] = 0;
            }
        }
        add(a[i]);
    }
    int cnt = 0;
    for (int i = 1; i <= sum; i++) {
        if (ans[i])
            vec.push_back(i);
    }
    printf("%d\n", vec.size());
    for (int i = 0; i < vec.size(); i++)
        printf("%d ", vec[i]);
}

Compilation message

bootfall.cpp: In function 'int main()':
bootfall.cpp:75:30: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
     printf("%d\n", vec.size());
                              ^
bootfall.cpp:76:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < vec.size(); i++)
                       ^
bootfall.cpp:70:9: warning: unused variable 'cnt' [-Wunused-variable]
     int cnt = 0;
         ^
bootfall.cpp:37:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
                    ^
bootfall.cpp:40:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a[i]);
                           ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3972 KB Output is correct
2 Correct 3 ms 3972 KB Output is correct
3 Correct 0 ms 3972 KB Output is correct
4 Correct 0 ms 3972 KB Output is correct
5 Correct 3 ms 3972 KB Output is correct
6 Correct 3 ms 3972 KB Output is correct
7 Correct 0 ms 3972 KB Output is correct
8 Correct 3 ms 3972 KB Output is correct
9 Correct 3 ms 3972 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3972 KB Output is correct
2 Correct 3 ms 3972 KB Output is correct
3 Correct 0 ms 3972 KB Output is correct
4 Correct 0 ms 3972 KB Output is correct
5 Correct 3 ms 3972 KB Output is correct
6 Correct 3 ms 3972 KB Output is correct
7 Correct 0 ms 3972 KB Output is correct
8 Correct 3 ms 3972 KB Output is correct
9 Correct 3 ms 3972 KB Output is correct
10 Correct 0 ms 3972 KB Output is correct
11 Correct 3 ms 3972 KB Output is correct
12 Correct 3 ms 3972 KB Output is correct
13 Correct 6 ms 3972 KB Output is correct
14 Correct 0 ms 3972 KB Output is correct
15 Correct 3 ms 3972 KB Output is correct
16 Correct 3 ms 3972 KB Output is correct
17 Correct 3 ms 3972 KB Output is correct
18 Correct 3 ms 3972 KB Output is correct
19 Correct 3 ms 3972 KB Output is correct
20 Correct 0 ms 3972 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3972 KB Output is correct
2 Correct 3 ms 3972 KB Output is correct
3 Correct 0 ms 3972 KB Output is correct
4 Correct 0 ms 3972 KB Output is correct
5 Correct 3 ms 3972 KB Output is correct
6 Correct 3 ms 3972 KB Output is correct
7 Correct 0 ms 3972 KB Output is correct
8 Correct 3 ms 3972 KB Output is correct
9 Correct 3 ms 3972 KB Output is correct
10 Correct 0 ms 3972 KB Output is correct
11 Correct 3 ms 3972 KB Output is correct
12 Correct 3 ms 3972 KB Output is correct
13 Correct 6 ms 3972 KB Output is correct
14 Correct 0 ms 3972 KB Output is correct
15 Correct 3 ms 3972 KB Output is correct
16 Correct 3 ms 3972 KB Output is correct
17 Correct 3 ms 3972 KB Output is correct
18 Correct 3 ms 3972 KB Output is correct
19 Correct 3 ms 3972 KB Output is correct
20 Correct 0 ms 3972 KB Output is correct
21 Correct 13 ms 3972 KB Output is correct
22 Correct 13 ms 3972 KB Output is correct
23 Correct 13 ms 3972 KB Output is correct
24 Correct 19 ms 3972 KB Output is correct
25 Correct 3 ms 3972 KB Output is correct
26 Correct 6 ms 3972 KB Output is correct
27 Correct 3 ms 3972 KB Output is correct
28 Correct 3 ms 3972 KB Output is correct
29 Correct 3 ms 3972 KB Output is correct
30 Correct 19 ms 3972 KB Output is correct
31 Correct 6 ms 3972 KB Output is correct
32 Correct 16 ms 3972 KB Output is correct
33 Correct 0 ms 3972 KB Output is correct
34 Correct 0 ms 3972 KB Output is correct
35 Correct 3 ms 3972 KB Output is correct
36 Correct 13 ms 3972 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3972 KB Output is correct
2 Correct 3 ms 3972 KB Output is correct
3 Correct 0 ms 3972 KB Output is correct
4 Correct 0 ms 3972 KB Output is correct
5 Correct 3 ms 3972 KB Output is correct
6 Correct 3 ms 3972 KB Output is correct
7 Correct 0 ms 3972 KB Output is correct
8 Correct 3 ms 3972 KB Output is correct
9 Correct 3 ms 3972 KB Output is correct
10 Correct 0 ms 3972 KB Output is correct
11 Correct 3 ms 3972 KB Output is correct
12 Correct 3 ms 3972 KB Output is correct
13 Correct 6 ms 3972 KB Output is correct
14 Correct 0 ms 3972 KB Output is correct
15 Correct 3 ms 3972 KB Output is correct
16 Correct 3 ms 3972 KB Output is correct
17 Correct 3 ms 3972 KB Output is correct
18 Correct 3 ms 3972 KB Output is correct
19 Correct 3 ms 3972 KB Output is correct
20 Correct 0 ms 3972 KB Output is correct
21 Correct 13 ms 3972 KB Output is correct
22 Correct 13 ms 3972 KB Output is correct
23 Correct 13 ms 3972 KB Output is correct
24 Correct 19 ms 3972 KB Output is correct
25 Correct 3 ms 3972 KB Output is correct
26 Correct 6 ms 3972 KB Output is correct
27 Correct 3 ms 3972 KB Output is correct
28 Correct 3 ms 3972 KB Output is correct
29 Correct 3 ms 3972 KB Output is correct
30 Correct 19 ms 3972 KB Output is correct
31 Correct 6 ms 3972 KB Output is correct
32 Correct 16 ms 3972 KB Output is correct
33 Correct 0 ms 3972 KB Output is correct
34 Correct 0 ms 3972 KB Output is correct
35 Correct 3 ms 3972 KB Output is correct
36 Correct 13 ms 3972 KB Output is correct
37 Correct 29 ms 4112 KB Output is correct
38 Correct 36 ms 4112 KB Output is correct
39 Correct 9 ms 3972 KB Output is correct
40 Correct 116 ms 4112 KB Output is correct
41 Correct 13 ms 3972 KB Output is correct
42 Correct 83 ms 4112 KB Output is correct
43 Correct 63 ms 4244 KB Output is correct
44 Correct 59 ms 4244 KB Output is correct
45 Correct 59 ms 4244 KB Output is correct
46 Correct 83 ms 3972 KB Output is correct
47 Correct 93 ms 4112 KB Output is correct
48 Correct 39 ms 4244 KB Output is correct
49 Correct 26 ms 4112 KB Output is correct
50 Correct 103 ms 4112 KB Output is correct
51 Correct 23 ms 3972 KB Output is correct
52 Correct 59 ms 4244 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3972 KB Output is correct
2 Correct 3 ms 3972 KB Output is correct
3 Correct 0 ms 3972 KB Output is correct
4 Correct 0 ms 3972 KB Output is correct
5 Correct 3 ms 3972 KB Output is correct
6 Correct 3 ms 3972 KB Output is correct
7 Correct 0 ms 3972 KB Output is correct
8 Correct 3 ms 3972 KB Output is correct
9 Correct 3 ms 3972 KB Output is correct
10 Correct 0 ms 3972 KB Output is correct
11 Correct 3 ms 3972 KB Output is correct
12 Correct 3 ms 3972 KB Output is correct
13 Correct 6 ms 3972 KB Output is correct
14 Correct 0 ms 3972 KB Output is correct
15 Correct 3 ms 3972 KB Output is correct
16 Correct 3 ms 3972 KB Output is correct
17 Correct 3 ms 3972 KB Output is correct
18 Correct 3 ms 3972 KB Output is correct
19 Correct 3 ms 3972 KB Output is correct
20 Correct 0 ms 3972 KB Output is correct
21 Correct 13 ms 3972 KB Output is correct
22 Correct 13 ms 3972 KB Output is correct
23 Correct 13 ms 3972 KB Output is correct
24 Correct 19 ms 3972 KB Output is correct
25 Correct 3 ms 3972 KB Output is correct
26 Correct 6 ms 3972 KB Output is correct
27 Correct 3 ms 3972 KB Output is correct
28 Correct 3 ms 3972 KB Output is correct
29 Correct 3 ms 3972 KB Output is correct
30 Correct 19 ms 3972 KB Output is correct
31 Correct 6 ms 3972 KB Output is correct
32 Correct 16 ms 3972 KB Output is correct
33 Correct 0 ms 3972 KB Output is correct
34 Correct 0 ms 3972 KB Output is correct
35 Correct 3 ms 3972 KB Output is correct
36 Correct 13 ms 3972 KB Output is correct
37 Correct 29 ms 4112 KB Output is correct
38 Correct 36 ms 4112 KB Output is correct
39 Correct 9 ms 3972 KB Output is correct
40 Correct 116 ms 4112 KB Output is correct
41 Correct 13 ms 3972 KB Output is correct
42 Correct 83 ms 4112 KB Output is correct
43 Correct 63 ms 4244 KB Output is correct
44 Correct 59 ms 4244 KB Output is correct
45 Correct 59 ms 4244 KB Output is correct
46 Correct 83 ms 3972 KB Output is correct
47 Correct 93 ms 4112 KB Output is correct
48 Correct 39 ms 4244 KB Output is correct
49 Correct 26 ms 4112 KB Output is correct
50 Correct 103 ms 4112 KB Output is correct
51 Correct 23 ms 3972 KB Output is correct
52 Correct 59 ms 4244 KB Output is correct
53 Correct 136 ms 4244 KB Output is correct
54 Correct 176 ms 4244 KB Output is correct
55 Correct 136 ms 4440 KB Output is correct
56 Correct 159 ms 4244 KB Output is correct
57 Correct 139 ms 4440 KB Output is correct
58 Correct 213 ms 4244 KB Output is correct
59 Correct 183 ms 4440 KB Output is correct
60 Correct 69 ms 3972 KB Output is correct
61 Correct 203 ms 4440 KB Output is correct
62 Correct 153 ms 4440 KB Output is correct
63 Correct 139 ms 4440 KB Output is correct
64 Correct 126 ms 4440 KB Output is correct
65 Correct 16 ms 3972 KB Output is correct
66 Correct 39 ms 4112 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3972 KB Output is correct
2 Correct 3 ms 3972 KB Output is correct
3 Correct 0 ms 3972 KB Output is correct
4 Correct 0 ms 3972 KB Output is correct
5 Correct 3 ms 3972 KB Output is correct
6 Correct 3 ms 3972 KB Output is correct
7 Correct 0 ms 3972 KB Output is correct
8 Correct 3 ms 3972 KB Output is correct
9 Correct 3 ms 3972 KB Output is correct
10 Correct 0 ms 3972 KB Output is correct
11 Correct 3 ms 3972 KB Output is correct
12 Correct 3 ms 3972 KB Output is correct
13 Correct 6 ms 3972 KB Output is correct
14 Correct 0 ms 3972 KB Output is correct
15 Correct 3 ms 3972 KB Output is correct
16 Correct 3 ms 3972 KB Output is correct
17 Correct 3 ms 3972 KB Output is correct
18 Correct 3 ms 3972 KB Output is correct
19 Correct 3 ms 3972 KB Output is correct
20 Correct 0 ms 3972 KB Output is correct
21 Correct 13 ms 3972 KB Output is correct
22 Correct 13 ms 3972 KB Output is correct
23 Correct 13 ms 3972 KB Output is correct
24 Correct 19 ms 3972 KB Output is correct
25 Correct 3 ms 3972 KB Output is correct
26 Correct 6 ms 3972 KB Output is correct
27 Correct 3 ms 3972 KB Output is correct
28 Correct 3 ms 3972 KB Output is correct
29 Correct 3 ms 3972 KB Output is correct
30 Correct 19 ms 3972 KB Output is correct
31 Correct 6 ms 3972 KB Output is correct
32 Correct 16 ms 3972 KB Output is correct
33 Correct 0 ms 3972 KB Output is correct
34 Correct 0 ms 3972 KB Output is correct
35 Correct 3 ms 3972 KB Output is correct
36 Correct 13 ms 3972 KB Output is correct
37 Correct 29 ms 4112 KB Output is correct
38 Correct 36 ms 4112 KB Output is correct
39 Correct 9 ms 3972 KB Output is correct
40 Correct 116 ms 4112 KB Output is correct
41 Correct 13 ms 3972 KB Output is correct
42 Correct 83 ms 4112 KB Output is correct
43 Correct 63 ms 4244 KB Output is correct
44 Correct 59 ms 4244 KB Output is correct
45 Correct 59 ms 4244 KB Output is correct
46 Correct 83 ms 3972 KB Output is correct
47 Correct 93 ms 4112 KB Output is correct
48 Correct 39 ms 4244 KB Output is correct
49 Correct 26 ms 4112 KB Output is correct
50 Correct 103 ms 4112 KB Output is correct
51 Correct 23 ms 3972 KB Output is correct
52 Correct 59 ms 4244 KB Output is correct
53 Correct 136 ms 4244 KB Output is correct
54 Correct 176 ms 4244 KB Output is correct
55 Correct 136 ms 4440 KB Output is correct
56 Correct 159 ms 4244 KB Output is correct
57 Correct 139 ms 4440 KB Output is correct
58 Correct 213 ms 4244 KB Output is correct
59 Correct 183 ms 4440 KB Output is correct
60 Correct 69 ms 3972 KB Output is correct
61 Correct 203 ms 4440 KB Output is correct
62 Correct 153 ms 4440 KB Output is correct
63 Correct 139 ms 4440 KB Output is correct
64 Correct 126 ms 4440 KB Output is correct
65 Correct 16 ms 3972 KB Output is correct
66 Correct 39 ms 4112 KB Output is correct
67 Correct 276 ms 4440 KB Output is correct
68 Correct 143 ms 3972 KB Output is correct
69 Correct 489 ms 4824 KB Output is correct
70 Correct 686 ms 4440 KB Output is correct
71 Correct 593 ms 4440 KB Output is correct
72 Correct 973 ms 3972 KB Output is correct
73 Correct 923 ms 3972 KB Output is correct
74 Correct 516 ms 4824 KB Output is correct
75 Correct 553 ms 4824 KB Output is correct
76 Correct 376 ms 4824 KB Output is correct
77 Correct 446 ms 4824 KB Output is correct