답안 #58459 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
58459	2018-07-17T23:19:27 Z	Benq	Bootfall (IZhO17_bootfall)	C++14	100 / 100	604 ms	3220 KB

bootfall

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;

template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define FOR(i, a, b) for (int i=a; i<(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)

#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()

const int MOD = 1000000007;
const ll INF = 1e18;
const int MX = 500*500+1;

typedef array<int,MX> B;

int N, a[500];
bitset<MX> all;
B b;
int sum = 0;

void ad(B& b, int x) {
    sum += x;
    FORd(i,x,MX) {
        b[i] += b[i-x];
        if (b[i] >= MOD) b[i] -= MOD;
    }
}

void del(B& b, int x) { // b[i]+b[i-x] = b2[i], b[i] = b2[i]-b[i-x]
    sum -= x;
    FOR(i,x,MX) {
        b[i] -= b[i-x];
        if (b[i] < 0) b[i] += MOD;
    }
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    all.flip();
    cin >> N;
    b[0] = 1;
    F0R(i,N) {
        cin >> a[i];
        ad(b,a[i]);
    }
    if (sum % 2 != 0 || !b[sum/2]) {
        cout << 0;
        exit(0);
    }
    F0R(i,N) {
        del(b,a[i]);
        bitset<MX> cur;
        for (int j = 0; 2*j < sum; ++j) if (b[j]) cur[sum-2*j] = 1;
        ad(b,a[i]);
        all &= cur;
    }
    vi v;
    FOR(i,1,MX) if (all[i]) v.pb(i);
    cout << sz(v) << "\n";
    for (int i: v) cout << i << " ";
}

/* Look for:
* the exact constraints (multiple sets are too slow for n=10^6 :( ) 
* special cases (n=1?)
* overflow (ll vs int?)
* array bounds
*/

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	1400 KB	Output is correct
2	Correct	9 ms	1400 KB	Output is correct
3	Correct	4 ms	1452 KB	Output is correct
4	Correct	7 ms	1452 KB	Output is correct
5	Correct	16 ms	1620 KB	Output is correct
6	Correct	11 ms	1620 KB	Output is correct
7	Correct	9 ms	1620 KB	Output is correct
8	Correct	15 ms	1728 KB	Output is correct
9	Correct	12 ms	1728 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	1400 KB	Output is correct
2	Correct	9 ms	1400 KB	Output is correct
3	Correct	4 ms	1452 KB	Output is correct
4	Correct	7 ms	1452 KB	Output is correct
5	Correct	16 ms	1620 KB	Output is correct
6	Correct	11 ms	1620 KB	Output is correct
7	Correct	9 ms	1620 KB	Output is correct
8	Correct	15 ms	1728 KB	Output is correct
9	Correct	12 ms	1728 KB	Output is correct
10	Correct	32 ms	1744 KB	Output is correct
11	Correct	42 ms	1744 KB	Output is correct
12	Correct	36 ms	1744 KB	Output is correct
13	Correct	45 ms	1744 KB	Output is correct
14	Correct	38 ms	1744 KB	Output is correct
15	Correct	33 ms	1744 KB	Output is correct
16	Correct	34 ms	1744 KB	Output is correct
17	Correct	21 ms	1744 KB	Output is correct
18	Correct	27 ms	1744 KB	Output is correct
19	Correct	29 ms	1744 KB	Output is correct
20	Correct	30 ms	1744 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	1400 KB	Output is correct
2	Correct	9 ms	1400 KB	Output is correct
3	Correct	4 ms	1452 KB	Output is correct
4	Correct	7 ms	1452 KB	Output is correct
5	Correct	16 ms	1620 KB	Output is correct
6	Correct	11 ms	1620 KB	Output is correct
7	Correct	9 ms	1620 KB	Output is correct
8	Correct	15 ms	1728 KB	Output is correct
9	Correct	12 ms	1728 KB	Output is correct
10	Correct	32 ms	1744 KB	Output is correct
11	Correct	42 ms	1744 KB	Output is correct
12	Correct	36 ms	1744 KB	Output is correct
13	Correct	45 ms	1744 KB	Output is correct
14	Correct	38 ms	1744 KB	Output is correct
15	Correct	33 ms	1744 KB	Output is correct
16	Correct	34 ms	1744 KB	Output is correct
17	Correct	21 ms	1744 KB	Output is correct
18	Correct	27 ms	1744 KB	Output is correct
19	Correct	29 ms	1744 KB	Output is correct
20	Correct	30 ms	1744 KB	Output is correct
21	Correct	81 ms	1744 KB	Output is correct
22	Correct	71 ms	1744 KB	Output is correct
23	Correct	48 ms	1744 KB	Output is correct
24	Correct	172 ms	1744 KB	Output is correct
25	Correct	171 ms	1744 KB	Output is correct
26	Correct	96 ms	1744 KB	Output is correct
27	Correct	91 ms	1744 KB	Output is correct
28	Correct	97 ms	1744 KB	Output is correct
29	Correct	90 ms	1744 KB	Output is correct
30	Correct	92 ms	1784 KB	Output is correct
31	Correct	94 ms	1820 KB	Output is correct
32	Correct	93 ms	1820 KB	Output is correct
33	Correct	96 ms	1820 KB	Output is correct
34	Correct	93 ms	1944 KB	Output is correct
35	Correct	104 ms	1944 KB	Output is correct
36	Correct	103 ms	1944 KB	Output is correct

Subtask #4
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	1400 KB	Output is correct
2	Correct	9 ms	1400 KB	Output is correct
3	Correct	4 ms	1452 KB	Output is correct
4	Correct	7 ms	1452 KB	Output is correct
5	Correct	16 ms	1620 KB	Output is correct
6	Correct	11 ms	1620 KB	Output is correct
7	Correct	9 ms	1620 KB	Output is correct
8	Correct	15 ms	1728 KB	Output is correct
9	Correct	12 ms	1728 KB	Output is correct
10	Correct	32 ms	1744 KB	Output is correct
11	Correct	42 ms	1744 KB	Output is correct
12	Correct	36 ms	1744 KB	Output is correct
13	Correct	45 ms	1744 KB	Output is correct
14	Correct	38 ms	1744 KB	Output is correct
15	Correct	33 ms	1744 KB	Output is correct
16	Correct	34 ms	1744 KB	Output is correct
17	Correct	21 ms	1744 KB	Output is correct
18	Correct	27 ms	1744 KB	Output is correct
19	Correct	29 ms	1744 KB	Output is correct
20	Correct	30 ms	1744 KB	Output is correct
21	Correct	81 ms	1744 KB	Output is correct
22	Correct	71 ms	1744 KB	Output is correct
23	Correct	48 ms	1744 KB	Output is correct
24	Correct	172 ms	1744 KB	Output is correct
25	Correct	171 ms	1744 KB	Output is correct
26	Correct	96 ms	1744 KB	Output is correct
27	Correct	91 ms	1744 KB	Output is correct
28	Correct	97 ms	1744 KB	Output is correct
29	Correct	90 ms	1744 KB	Output is correct
30	Correct	92 ms	1784 KB	Output is correct
31	Correct	94 ms	1820 KB	Output is correct
32	Correct	93 ms	1820 KB	Output is correct
33	Correct	96 ms	1820 KB	Output is correct
34	Correct	93 ms	1944 KB	Output is correct
35	Correct	104 ms	1944 KB	Output is correct
36	Correct	103 ms	1944 KB	Output is correct
37	Correct	194 ms	1944 KB	Output is correct
38	Correct	185 ms	1944 KB	Output is correct
39	Correct	247 ms	1944 KB	Output is correct
40	Correct	314 ms	1944 KB	Output is correct
41	Correct	281 ms	1944 KB	Output is correct
42	Correct	246 ms	1944 KB	Output is correct
43	Correct	254 ms	2128 KB	Output is correct
44	Correct	286 ms	2128 KB	Output is correct
45	Correct	249 ms	2128 KB	Output is correct
46	Correct	246 ms	2128 KB	Output is correct
47	Correct	258 ms	2128 KB	Output is correct
48	Correct	266 ms	2220 KB	Output is correct
49	Correct	283 ms	2220 KB	Output is correct
50	Correct	269 ms	2220 KB	Output is correct
51	Correct	76 ms	2220 KB	Output is correct
52	Correct	304 ms	2220 KB	Output is correct

Subtask #5
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	1400 KB	Output is correct
2	Correct	9 ms	1400 KB	Output is correct
3	Correct	4 ms	1452 KB	Output is correct
4	Correct	7 ms	1452 KB	Output is correct
5	Correct	16 ms	1620 KB	Output is correct
6	Correct	11 ms	1620 KB	Output is correct
7	Correct	9 ms	1620 KB	Output is correct
8	Correct	15 ms	1728 KB	Output is correct
9	Correct	12 ms	1728 KB	Output is correct
10	Correct	32 ms	1744 KB	Output is correct
11	Correct	42 ms	1744 KB	Output is correct
12	Correct	36 ms	1744 KB	Output is correct
13	Correct	45 ms	1744 KB	Output is correct
14	Correct	38 ms	1744 KB	Output is correct
15	Correct	33 ms	1744 KB	Output is correct
16	Correct	34 ms	1744 KB	Output is correct
17	Correct	21 ms	1744 KB	Output is correct
18	Correct	27 ms	1744 KB	Output is correct
19	Correct	29 ms	1744 KB	Output is correct
20	Correct	30 ms	1744 KB	Output is correct
21	Correct	81 ms	1744 KB	Output is correct
22	Correct	71 ms	1744 KB	Output is correct
23	Correct	48 ms	1744 KB	Output is correct
24	Correct	172 ms	1744 KB	Output is correct
25	Correct	171 ms	1744 KB	Output is correct
26	Correct	96 ms	1744 KB	Output is correct
27	Correct	91 ms	1744 KB	Output is correct
28	Correct	97 ms	1744 KB	Output is correct
29	Correct	90 ms	1744 KB	Output is correct
30	Correct	92 ms	1784 KB	Output is correct
31	Correct	94 ms	1820 KB	Output is correct
32	Correct	93 ms	1820 KB	Output is correct
33	Correct	96 ms	1820 KB	Output is correct
34	Correct	93 ms	1944 KB	Output is correct
35	Correct	104 ms	1944 KB	Output is correct
36	Correct	103 ms	1944 KB	Output is correct
37	Correct	194 ms	1944 KB	Output is correct
38	Correct	185 ms	1944 KB	Output is correct
39	Correct	247 ms	1944 KB	Output is correct
40	Correct	314 ms	1944 KB	Output is correct
41	Correct	281 ms	1944 KB	Output is correct
42	Correct	246 ms	1944 KB	Output is correct
43	Correct	254 ms	2128 KB	Output is correct
44	Correct	286 ms	2128 KB	Output is correct
45	Correct	249 ms	2128 KB	Output is correct
46	Correct	246 ms	2128 KB	Output is correct
47	Correct	258 ms	2128 KB	Output is correct
48	Correct	266 ms	2220 KB	Output is correct
49	Correct	283 ms	2220 KB	Output is correct
50	Correct	269 ms	2220 KB	Output is correct
51	Correct	76 ms	2220 KB	Output is correct
52	Correct	304 ms	2220 KB	Output is correct
53	Correct	319 ms	2220 KB	Output is correct
54	Correct	389 ms	2228 KB	Output is correct
55	Correct	408 ms	2252 KB	Output is correct
56	Correct	293 ms	2252 KB	Output is correct
57	Correct	397 ms	2364 KB	Output is correct
58	Correct	395 ms	2364 KB	Output is correct
59	Correct	451 ms	2364 KB	Output is correct
60	Correct	113 ms	2364 KB	Output is correct
61	Correct	381 ms	2376 KB	Output is correct
62	Correct	316 ms	2376 KB	Output is correct
63	Correct	349 ms	2376 KB	Output is correct
64	Correct	328 ms	2376 KB	Output is correct
65	Correct	328 ms	2376 KB	Output is correct
66	Correct	425 ms	2376 KB	Output is correct

Subtask #6
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	9 ms	1400 KB	Output is correct
2	Correct	9 ms	1400 KB	Output is correct
3	Correct	4 ms	1452 KB	Output is correct
4	Correct	7 ms	1452 KB	Output is correct
5	Correct	16 ms	1620 KB	Output is correct
6	Correct	11 ms	1620 KB	Output is correct
7	Correct	9 ms	1620 KB	Output is correct
8	Correct	15 ms	1728 KB	Output is correct
9	Correct	12 ms	1728 KB	Output is correct
10	Correct	32 ms	1744 KB	Output is correct
11	Correct	42 ms	1744 KB	Output is correct
12	Correct	36 ms	1744 KB	Output is correct
13	Correct	45 ms	1744 KB	Output is correct
14	Correct	38 ms	1744 KB	Output is correct
15	Correct	33 ms	1744 KB	Output is correct
16	Correct	34 ms	1744 KB	Output is correct
17	Correct	21 ms	1744 KB	Output is correct
18	Correct	27 ms	1744 KB	Output is correct
19	Correct	29 ms	1744 KB	Output is correct
20	Correct	30 ms	1744 KB	Output is correct
21	Correct	81 ms	1744 KB	Output is correct
22	Correct	71 ms	1744 KB	Output is correct
23	Correct	48 ms	1744 KB	Output is correct
24	Correct	172 ms	1744 KB	Output is correct
25	Correct	171 ms	1744 KB	Output is correct
26	Correct	96 ms	1744 KB	Output is correct
27	Correct	91 ms	1744 KB	Output is correct
28	Correct	97 ms	1744 KB	Output is correct
29	Correct	90 ms	1744 KB	Output is correct
30	Correct	92 ms	1784 KB	Output is correct
31	Correct	94 ms	1820 KB	Output is correct
32	Correct	93 ms	1820 KB	Output is correct
33	Correct	96 ms	1820 KB	Output is correct
34	Correct	93 ms	1944 KB	Output is correct
35	Correct	104 ms	1944 KB	Output is correct
36	Correct	103 ms	1944 KB	Output is correct
37	Correct	194 ms	1944 KB	Output is correct
38	Correct	185 ms	1944 KB	Output is correct
39	Correct	247 ms	1944 KB	Output is correct
40	Correct	314 ms	1944 KB	Output is correct
41	Correct	281 ms	1944 KB	Output is correct
42	Correct	246 ms	1944 KB	Output is correct
43	Correct	254 ms	2128 KB	Output is correct
44	Correct	286 ms	2128 KB	Output is correct
45	Correct	249 ms	2128 KB	Output is correct
46	Correct	246 ms	2128 KB	Output is correct
47	Correct	258 ms	2128 KB	Output is correct
48	Correct	266 ms	2220 KB	Output is correct
49	Correct	283 ms	2220 KB	Output is correct
50	Correct	269 ms	2220 KB	Output is correct
51	Correct	76 ms	2220 KB	Output is correct
52	Correct	304 ms	2220 KB	Output is correct
53	Correct	319 ms	2220 KB	Output is correct
54	Correct	389 ms	2228 KB	Output is correct
55	Correct	408 ms	2252 KB	Output is correct
56	Correct	293 ms	2252 KB	Output is correct
57	Correct	397 ms	2364 KB	Output is correct
58	Correct	395 ms	2364 KB	Output is correct
59	Correct	451 ms	2364 KB	Output is correct
60	Correct	113 ms	2364 KB	Output is correct
61	Correct	381 ms	2376 KB	Output is correct
62	Correct	316 ms	2376 KB	Output is correct
63	Correct	349 ms	2376 KB	Output is correct
64	Correct	328 ms	2376 KB	Output is correct
65	Correct	328 ms	2376 KB	Output is correct
66	Correct	425 ms	2376 KB	Output is correct
67	Correct	422 ms	2376 KB	Output is correct
68	Correct	138 ms	2376 KB	Output is correct
69	Correct	604 ms	3000 KB	Output is correct
70	Correct	568 ms	3000 KB	Output is correct
71	Correct	564 ms	3000 KB	Output is correct
72	Correct	563 ms	3000 KB	Output is correct
73	Correct	542 ms	3000 KB	Output is correct
74	Correct	597 ms	3044 KB	Output is correct
75	Correct	555 ms	3076 KB	Output is correct
76	Correct	587 ms	3084 KB	Output is correct
77	Correct	581 ms	3220 KB	Output is correct

답안 #58459

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 7.0 / 7.0

Subtask #3 15.0 / 15.0

Subtask #4 16.0 / 16.0

Subtask #5 21.0 / 21.0

Subtask #6 35.0 / 35.0

Subtask #1
6.0 / 6.0

Subtask #2
7.0 / 7.0

Subtask #3
15.0 / 15.0

Subtask #4
16.0 / 16.0

Subtask #5
21.0 / 21.0

Subtask #6
35.0 / 35.0