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답안 #174672

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
174672 2020-01-06T16:05:18 Z srvlt Bootfall (IZhO17_bootfall) C++14
100 / 100
 839 ms 4088 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ordered_set tree <pair <int, int>, null_type, less <pair <int, int> >, rb_tree_tag, tree_order_statistics_node_update>
using namespace __gnu_pbds;

#define ll long long
#define db double
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define mp make_pair
#define size(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

#define endl "\n"
//#define int long long

using namespace std;

void dout() {
    cerr << endl;
}
template <typename Head, typename... Tail>
void dout(Head H, Tail... T) {
    cerr << H << ' ';
    dout(T...);
}

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair <int, int> pii;

const int N = 503, K = 250001;
const pii MOD = {1e9 + 7, 1e9 + 9};
int n, a[N], ans[K];
pii dp[K];

void add(pii & x, pii y) {
    x.fi += y.fi;
    if (x.fi >= MOD.fi) {
        x.fi -= MOD.fi;
    }
    x.se += y.se;
    if (x.se >= MOD.se) {
        x.se -= MOD.se;
    }
}

void sub(pii & x, pii y) {
    x.fi -= y.fi;
    if (x.fi < 0) {
        x.fi += MOD.fi;
    }
    x.se -= y.se;
    if (x.se < 0) {
        x.se += MOD.se;
    }
}

bool exist(int x) {
    return dp[x].fi > 0 || dp[x].se > 0;
}

void solve(int tc) {
    // check for (int i = 0; i < n; j++)
    cin >> n;
    dp[0] = {1, 1};
    int total = 0;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        total += a[i];
        for (int j = K - 1; j >= a[i]; j--) {
            add(dp[j], dp[j - a[i]]);
        }
    }
    if ((total & 1) || !exist(total >> 1)) {
        cout << 0;
        return;
    }
    fill(ans, ans + K, 1);
    int least = 1e9;
    for (int i = 1; i <= n; i++) {
        for (int j = a[i]; j < K; j++) {
            sub(dp[j], dp[j - a[i]]);
        }
        total -= a[i];
        least = min(least, total);

        for (int j = 0; j <= total; j++) {
            if ((j & 1) != (total & 1) || (!exist(total + j >> 1) && !exist(total - j >> 1))) {
                ans[j] = 0;
            }
        }

        total += a[i];
        for (int j = K - 1; j >= a[i]; j--) {
            add(dp[j], dp[j - a[i]]);
        }
    }
    int cnt = 0;
    for (int i = 0; i <= least; i++) {
        if (ans[i]) {
            cnt++;
        }
    }
    cout << cnt << endl;
    for (int i = 0; i <= least; i++) {
        if (ans[i]) {
            cout << i << " ";
        }
    }
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
    int tc = 1;
//    cin >> tc;
    for (int i = 0; i < tc; i++) {
        solve(i);
//        cleanup();
    }
}

Compilation message

bootfall.cpp: In function 'void solve(int)':
bootfall.cpp:94:57: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
             if ((j & 1) != (total & 1) || (!exist(total + j >> 1) && !exist(total - j >> 1))) {
                                                   ~~~~~~^~~
bootfall.cpp:94:83: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
             if ((j & 1) != (total & 1) || (!exist(total + j >> 1) && !exist(total - j >> 1))) {
                                                                             ~~~~~~^~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 3320 KB Output is correct
2 Correct 14 ms 3320 KB Output is correct
3 Correct 6 ms 2296 KB Output is correct
4 Correct 11 ms 3320 KB Output is correct
5 Correct 22 ms 3320 KB Output is correct
6 Correct 16 ms 3324 KB Output is correct
7 Correct 14 ms 3320 KB Output is correct
8 Correct 22 ms 3320 KB Output is correct
9 Correct 19 ms 3320 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 3320 KB Output is correct
2 Correct 14 ms 3320 KB Output is correct
3 Correct 6 ms 2296 KB Output is correct
4 Correct 11 ms 3320 KB Output is correct
5 Correct 22 ms 3320 KB Output is correct
6 Correct 16 ms 3324 KB Output is correct
7 Correct 14 ms 3320 KB Output is correct
8 Correct 22 ms 3320 KB Output is correct
9 Correct 19 ms 3320 KB Output is correct
10 Correct 47 ms 3324 KB Output is correct
11 Correct 49 ms 3320 KB Output is correct
12 Correct 47 ms 3296 KB Output is correct
13 Correct 42 ms 3448 KB Output is correct
14 Correct 44 ms 3276 KB Output is correct
15 Correct 45 ms 3196 KB Output is correct
16 Correct 48 ms 3320 KB Output is correct
17 Correct 30 ms 3320 KB Output is correct
18 Correct 39 ms 3216 KB Output is correct
19 Correct 42 ms 3320 KB Output is correct
20 Correct 47 ms 3320 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 3320 KB Output is correct
2 Correct 14 ms 3320 KB Output is correct
3 Correct 6 ms 2296 KB Output is correct
4 Correct 11 ms 3320 KB Output is correct
5 Correct 22 ms 3320 KB Output is correct
6 Correct 16 ms 3324 KB Output is correct
7 Correct 14 ms 3320 KB Output is correct
8 Correct 22 ms 3320 KB Output is correct
9 Correct 19 ms 3320 KB Output is correct
10 Correct 47 ms 3324 KB Output is correct
11 Correct 49 ms 3320 KB Output is correct
12 Correct 47 ms 3296 KB Output is correct
13 Correct 42 ms 3448 KB Output is correct
14 Correct 44 ms 3276 KB Output is correct
15 Correct 45 ms 3196 KB Output is correct
16 Correct 48 ms 3320 KB Output is correct
17 Correct 30 ms 3320 KB Output is correct
18 Correct 39 ms 3216 KB Output is correct
19 Correct 42 ms 3320 KB Output is correct
20 Correct 47 ms 3320 KB Output is correct
21 Correct 96 ms 3360 KB Output is correct
22 Correct 110 ms 3280 KB Output is correct
23 Correct 75 ms 3356 KB Output is correct
24 Correct 137 ms 3320 KB Output is correct
25 Correct 136 ms 3320 KB Output is correct
26 Correct 146 ms 3316 KB Output is correct
27 Correct 145 ms 3320 KB Output is correct
28 Correct 145 ms 3324 KB Output is correct
29 Correct 145 ms 3320 KB Output is correct
30 Correct 143 ms 3320 KB Output is correct
31 Correct 144 ms 3396 KB Output is correct
32 Correct 144 ms 3320 KB Output is correct
33 Correct 145 ms 3360 KB Output is correct
34 Correct 145 ms 3320 KB Output is correct
35 Correct 145 ms 3320 KB Output is correct
36 Correct 145 ms 3320 KB Output is correct

Subtask #4
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 3320 KB Output is correct
2 Correct 14 ms 3320 KB Output is correct
3 Correct 6 ms 2296 KB Output is correct
4 Correct 11 ms 3320 KB Output is correct
5 Correct 22 ms 3320 KB Output is correct
6 Correct 16 ms 3324 KB Output is correct
7 Correct 14 ms 3320 KB Output is correct
8 Correct 22 ms 3320 KB Output is correct
9 Correct 19 ms 3320 KB Output is correct
10 Correct 47 ms 3324 KB Output is correct
11 Correct 49 ms 3320 KB Output is correct
12 Correct 47 ms 3296 KB Output is correct
13 Correct 42 ms 3448 KB Output is correct
14 Correct 44 ms 3276 KB Output is correct
15 Correct 45 ms 3196 KB Output is correct
16 Correct 48 ms 3320 KB Output is correct
17 Correct 30 ms 3320 KB Output is correct
18 Correct 39 ms 3216 KB Output is correct
19 Correct 42 ms 3320 KB Output is correct
20 Correct 47 ms 3320 KB Output is correct
21 Correct 96 ms 3360 KB Output is correct
22 Correct 110 ms 3280 KB Output is correct
23 Correct 75 ms 3356 KB Output is correct
24 Correct 137 ms 3320 KB Output is correct
25 Correct 136 ms 3320 KB Output is correct
26 Correct 146 ms 3316 KB Output is correct
27 Correct 145 ms 3320 KB Output is correct
28 Correct 145 ms 3324 KB Output is correct
29 Correct 145 ms 3320 KB Output is correct
30 Correct 143 ms 3320 KB Output is correct
31 Correct 144 ms 3396 KB Output is correct
32 Correct 144 ms 3320 KB Output is correct
33 Correct 145 ms 3360 KB Output is correct
34 Correct 145 ms 3320 KB Output is correct
35 Correct 145 ms 3320 KB Output is correct
36 Correct 145 ms 3320 KB Output is correct
37 Correct 281 ms 3424 KB Output is correct
38 Correct 285 ms 3396 KB Output is correct
39 Correct 370 ms 3380 KB Output is correct
40 Correct 386 ms 3448 KB Output is correct
41 Correct 420 ms 3372 KB Output is correct
42 Correct 361 ms 3320 KB Output is correct
43 Correct 355 ms 3524 KB Output is correct
44 Correct 365 ms 3444 KB Output is correct
45 Correct 365 ms 3448 KB Output is correct
46 Correct 393 ms 3244 KB Output is correct
47 Correct 359 ms 3320 KB Output is correct
48 Correct 369 ms 3448 KB Output is correct
49 Correct 375 ms 3320 KB Output is correct
50 Correct 360 ms 3420 KB Output is correct
51 Correct 111 ms 2424 KB Output is correct
52 Correct 429 ms 3576 KB Output is correct

Subtask #5
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 3320 KB Output is correct
2 Correct 14 ms 3320 KB Output is correct
3 Correct 6 ms 2296 KB Output is correct
4 Correct 11 ms 3320 KB Output is correct
5 Correct 22 ms 3320 KB Output is correct
6 Correct 16 ms 3324 KB Output is correct
7 Correct 14 ms 3320 KB Output is correct
8 Correct 22 ms 3320 KB Output is correct
9 Correct 19 ms 3320 KB Output is correct
10 Correct 47 ms 3324 KB Output is correct
11 Correct 49 ms 3320 KB Output is correct
12 Correct 47 ms 3296 KB Output is correct
13 Correct 42 ms 3448 KB Output is correct
14 Correct 44 ms 3276 KB Output is correct
15 Correct 45 ms 3196 KB Output is correct
16 Correct 48 ms 3320 KB Output is correct
17 Correct 30 ms 3320 KB Output is correct
18 Correct 39 ms 3216 KB Output is correct
19 Correct 42 ms 3320 KB Output is correct
20 Correct 47 ms 3320 KB Output is correct
21 Correct 96 ms 3360 KB Output is correct
22 Correct 110 ms 3280 KB Output is correct
23 Correct 75 ms 3356 KB Output is correct
24 Correct 137 ms 3320 KB Output is correct
25 Correct 136 ms 3320 KB Output is correct
26 Correct 146 ms 3316 KB Output is correct
27 Correct 145 ms 3320 KB Output is correct
28 Correct 145 ms 3324 KB Output is correct
29 Correct 145 ms 3320 KB Output is correct
30 Correct 143 ms 3320 KB Output is correct
31 Correct 144 ms 3396 KB Output is correct
32 Correct 144 ms 3320 KB Output is correct
33 Correct 145 ms 3360 KB Output is correct
34 Correct 145 ms 3320 KB Output is correct
35 Correct 145 ms 3320 KB Output is correct
36 Correct 145 ms 3320 KB Output is correct
37 Correct 281 ms 3424 KB Output is correct
38 Correct 285 ms 3396 KB Output is correct
39 Correct 370 ms 3380 KB Output is correct
40 Correct 386 ms 3448 KB Output is correct
41 Correct 420 ms 3372 KB Output is correct
42 Correct 361 ms 3320 KB Output is correct
43 Correct 355 ms 3524 KB Output is correct
44 Correct 365 ms 3444 KB Output is correct
45 Correct 365 ms 3448 KB Output is correct
46 Correct 393 ms 3244 KB Output is correct
47 Correct 359 ms 3320 KB Output is correct
48 Correct 369 ms 3448 KB Output is correct
49 Correct 375 ms 3320 KB Output is correct
50 Correct 360 ms 3420 KB Output is correct
51 Correct 111 ms 2424 KB Output is correct
52 Correct 429 ms 3576 KB Output is correct
53 Correct 443 ms 3372 KB Output is correct
54 Correct 507 ms 3576 KB Output is correct
55 Correct 531 ms 3652 KB Output is correct
56 Correct 443 ms 3500 KB Output is correct
57 Correct 538 ms 3576 KB Output is correct
58 Correct 514 ms 3576 KB Output is correct
59 Correct 516 ms 3524 KB Output is correct
60 Correct 154 ms 2424 KB Output is correct
61 Correct 517 ms 3448 KB Output is correct
62 Correct 477 ms 3576 KB Output is correct
63 Correct 485 ms 3652 KB Output is correct
64 Correct 474 ms 3704 KB Output is correct
65 Correct 474 ms 3372 KB Output is correct
66 Correct 467 ms 3320 KB Output is correct

Subtask #6
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 3320 KB Output is correct
2 Correct 14 ms 3320 KB Output is correct
3 Correct 6 ms 2296 KB Output is correct
4 Correct 11 ms 3320 KB Output is correct
5 Correct 22 ms 3320 KB Output is correct
6 Correct 16 ms 3324 KB Output is correct
7 Correct 14 ms 3320 KB Output is correct
8 Correct 22 ms 3320 KB Output is correct
9 Correct 19 ms 3320 KB Output is correct
10 Correct 47 ms 3324 KB Output is correct
11 Correct 49 ms 3320 KB Output is correct
12 Correct 47 ms 3296 KB Output is correct
13 Correct 42 ms 3448 KB Output is correct
14 Correct 44 ms 3276 KB Output is correct
15 Correct 45 ms 3196 KB Output is correct
16 Correct 48 ms 3320 KB Output is correct
17 Correct 30 ms 3320 KB Output is correct
18 Correct 39 ms 3216 KB Output is correct
19 Correct 42 ms 3320 KB Output is correct
20 Correct 47 ms 3320 KB Output is correct
21 Correct 96 ms 3360 KB Output is correct
22 Correct 110 ms 3280 KB Output is correct
23 Correct 75 ms 3356 KB Output is correct
24 Correct 137 ms 3320 KB Output is correct
25 Correct 136 ms 3320 KB Output is correct
26 Correct 146 ms 3316 KB Output is correct
27 Correct 145 ms 3320 KB Output is correct
28 Correct 145 ms 3324 KB Output is correct
29 Correct 145 ms 3320 KB Output is correct
30 Correct 143 ms 3320 KB Output is correct
31 Correct 144 ms 3396 KB Output is correct
32 Correct 144 ms 3320 KB Output is correct
33 Correct 145 ms 3360 KB Output is correct
34 Correct 145 ms 3320 KB Output is correct
35 Correct 145 ms 3320 KB Output is correct
36 Correct 145 ms 3320 KB Output is correct
37 Correct 281 ms 3424 KB Output is correct
38 Correct 285 ms 3396 KB Output is correct
39 Correct 370 ms 3380 KB Output is correct
40 Correct 386 ms 3448 KB Output is correct
41 Correct 420 ms 3372 KB Output is correct
42 Correct 361 ms 3320 KB Output is correct
43 Correct 355 ms 3524 KB Output is correct
44 Correct 365 ms 3444 KB Output is correct
45 Correct 365 ms 3448 KB Output is correct
46 Correct 393 ms 3244 KB Output is correct
47 Correct 359 ms 3320 KB Output is correct
48 Correct 369 ms 3448 KB Output is correct
49 Correct 375 ms 3320 KB Output is correct
50 Correct 360 ms 3420 KB Output is correct
51 Correct 111 ms 2424 KB Output is correct
52 Correct 429 ms 3576 KB Output is correct
53 Correct 443 ms 3372 KB Output is correct
54 Correct 507 ms 3576 KB Output is correct
55 Correct 531 ms 3652 KB Output is correct
56 Correct 443 ms 3500 KB Output is correct
57 Correct 538 ms 3576 KB Output is correct
58 Correct 514 ms 3576 KB Output is correct
59 Correct 516 ms 3524 KB Output is correct
60 Correct 154 ms 2424 KB Output is correct
61 Correct 517 ms 3448 KB Output is correct
62 Correct 477 ms 3576 KB Output is correct
63 Correct 485 ms 3652 KB Output is correct
64 Correct 474 ms 3704 KB Output is correct
65 Correct 474 ms 3372 KB Output is correct
66 Correct 467 ms 3320 KB Output is correct
67 Correct 592 ms 3496 KB Output is correct
68 Correct 219 ms 2296 KB Output is correct
69 Correct 799 ms 3960 KB Output is correct
70 Correct 757 ms 3832 KB Output is correct
71 Correct 756 ms 3756 KB Output is correct
72 Correct 752 ms 3320 KB Output is correct
73 Correct 755 ms 3244 KB Output is correct
74 Correct 805 ms 4088 KB Output is correct
75 Correct 776 ms 3888 KB Output is correct
76 Correct 839 ms 3960 KB Output is correct
77 Correct 815 ms 4088 KB Output is correct