oj.uz

Submission #663565

# Submission time Handle Problem Language Result Execution time Memory
663565 2022-11-27T02:52:23 Z Ninja_Kunai Bootfall (IZhO17_bootfall) C++14
28 / 100
 297 ms 812 KB 
/**
*    Author :  Nguyen Tuan Vu
*    Created : 27.11.2022
**/

#pragma GCC optimize("O3")
#pragma GCC target("avx,avx2,fma")
#include<bits/stdc++.h>
#define MASK(x) ((1)<<(x))
#define BIT(x, i) (((x)>>(i))&(1))
#define ALL(v)  (v).begin(), (v).end()
#define REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define FOR(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define FORD(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i)
#define db(val) "["#val" = "<<(val)<<"] "
#define TIME  (1.0 * clock() / CLOCKS_PER_SEC)

template <class X, class Y> bool minimize(X &a, Y b) {
    if (a > b) return a = b, true;
    return false;
}
template <class X, class Y> bool maximize(X &a, Y b) {
    if (a < b) return a = b, true;
    return false;
}

using namespace std;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int l, int r) {return l + rng() % (r - l + 1);}

void file(){
    #define TASK "TASK"
    if(fopen(TASK".in", "r")) {
        freopen(TASK".in", "r", stdin);
        freopen(TASK".out", "w", stdout);
    }
}

const int N = 5e2 + 5;
const int M = 5e2 * 5e2;
int n, a[N], b[N];
bitset <2 * M + 5> dp[2];

bitset <2 * M + 5> calc(int n) {
	dp[0].reset(); dp[1].reset();
	dp[0][M] = 1;
	REP(i, n) {
		if (dp[i & 1].count() == 0) break; 
		dp[(i + 1) & 1] |= dp[i & 1] << b[i + 1];
		dp[(i + 1) & 1] |= dp[i & 1] >> b[i + 1];

		dp[i & 1].reset();
	}

	return dp[n & 1];
}

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    file();
    cin >> n;
    FOR(i, 1, n) cin >> a[i], b[i] = a[i];
    if (calc(n)[M] == 0) return cout << 0, 0;
    bitset <2 * M + 5> tmp;
    FOR(i, 0, 2 * M) tmp[i] = 1;
    vector <int> ID;
    FOR(i, 1, n) ID.push_back(i);

    if (n <= 100) {
	    FOR(i, 1, n) {
	    	int cnt = 0;
	    	FOR(j, 1, n) if (i != j) b[++cnt] = a[j];
	    	tmp &= calc(n - 1);
	    	if (tmp.count() == 0) break;
	    }    	
    }
    else {
	    FOR(t, 1, sqrt(n)) {
	    	int i = ID[t - 1];
	    	int cnt = 0;
	    	FOR(j, 1, n) if (i != j) b[++cnt] = a[j];
	    	tmp &= calc(n - 1);
	    	if (tmp.count() == 0) break;
	    }
	}

    vector <int> ans;
    FOR(i, 0, 2 * M) if (tmp[i]) ans.push_back(abs(i - M));
    sort (ALL(ans)); ans.erase(unique(ALL(ans)), ans.end());
    cout << ans.size() << '\n';
    for (auto x : ans) cout << x << ' ';
    cerr << "Time elapsed: " << TIME << " s.\n";
    return 0;
}

/*
==================================================+
INPUT:                                            |
--------------------------------------------------|

--------------------------------------------------|
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OUTPUT:                                           |
--------------------------------------------------|

--------------------------------------------------|
==================================================+
*/

Compilation message

bootfall.cpp: In function 'void file()':
bootfall.cpp:35:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |         freopen(TASK".in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bootfall.cpp:36:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen(TASK".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 0 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 6 ms 692 KB Output is correct
9 Correct 3 ms 596 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 0 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 6 ms 692 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 26 ms 596 KB Output is correct
11 Correct 29 ms 724 KB Output is correct
12 Correct 5 ms 596 KB Output is correct
13 Correct 4 ms 596 KB Output is correct
14 Correct 24 ms 596 KB Output is correct
15 Correct 24 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 12 ms 596 KB Output is correct
18 Correct 17 ms 688 KB Output is correct
19 Correct 22 ms 596 KB Output is correct
20 Correct 27 ms 688 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 0 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 6 ms 692 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 26 ms 596 KB Output is correct
11 Correct 29 ms 724 KB Output is correct
12 Correct 5 ms 596 KB Output is correct
13 Correct 4 ms 596 KB Output is correct
14 Correct 24 ms 596 KB Output is correct
15 Correct 24 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 12 ms 596 KB Output is correct
18 Correct 17 ms 688 KB Output is correct
19 Correct 22 ms 596 KB Output is correct
20 Correct 27 ms 688 KB Output is correct
21 Correct 118 ms 672 KB Output is correct
22 Correct 158 ms 676 KB Output is correct
23 Correct 88 ms 596 KB Output is correct
24 Correct 239 ms 664 KB Output is correct
25 Correct 236 ms 716 KB Output is correct
26 Correct 264 ms 688 KB Output is correct
27 Correct 272 ms 716 KB Output is correct
28 Correct 264 ms 684 KB Output is correct
29 Correct 264 ms 680 KB Output is correct
30 Correct 18 ms 696 KB Output is correct
31 Correct 272 ms 676 KB Output is correct
32 Correct 269 ms 668 KB Output is correct
33 Correct 265 ms 668 KB Output is correct
34 Correct 272 ms 676 KB Output is correct
35 Correct 266 ms 668 KB Output is correct
36 Correct 297 ms 664 KB Output is correct

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 0 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 6 ms 692 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 26 ms 596 KB Output is correct
11 Correct 29 ms 724 KB Output is correct
12 Correct 5 ms 596 KB Output is correct
13 Correct 4 ms 596 KB Output is correct
14 Correct 24 ms 596 KB Output is correct
15 Correct 24 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 12 ms 596 KB Output is correct
18 Correct 17 ms 688 KB Output is correct
19 Correct 22 ms 596 KB Output is correct
20 Correct 27 ms 688 KB Output is correct
21 Correct 118 ms 672 KB Output is correct
22 Correct 158 ms 676 KB Output is correct
23 Correct 88 ms 596 KB Output is correct
24 Correct 239 ms 664 KB Output is correct
25 Correct 236 ms 716 KB Output is correct
26 Correct 264 ms 688 KB Output is correct
27 Correct 272 ms 716 KB Output is correct
28 Correct 264 ms 684 KB Output is correct
29 Correct 264 ms 680 KB Output is correct
30 Correct 18 ms 696 KB Output is correct
31 Correct 272 ms 676 KB Output is correct
32 Correct 269 ms 668 KB Output is correct
33 Correct 265 ms 668 KB Output is correct
34 Correct 272 ms 676 KB Output is correct
35 Correct 266 ms 668 KB Output is correct
36 Correct 297 ms 664 KB Output is correct
37 Incorrect 84 ms 812 KB Output isn't correct
38 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 0 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 6 ms 692 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 26 ms 596 KB Output is correct
11 Correct 29 ms 724 KB Output is correct
12 Correct 5 ms 596 KB Output is correct
13 Correct 4 ms 596 KB Output is correct
14 Correct 24 ms 596 KB Output is correct
15 Correct 24 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 12 ms 596 KB Output is correct
18 Correct 17 ms 688 KB Output is correct
19 Correct 22 ms 596 KB Output is correct
20 Correct 27 ms 688 KB Output is correct
21 Correct 118 ms 672 KB Output is correct
22 Correct 158 ms 676 KB Output is correct
23 Correct 88 ms 596 KB Output is correct
24 Correct 239 ms 664 KB Output is correct
25 Correct 236 ms 716 KB Output is correct
26 Correct 264 ms 688 KB Output is correct
27 Correct 272 ms 716 KB Output is correct
28 Correct 264 ms 684 KB Output is correct
29 Correct 264 ms 680 KB Output is correct
30 Correct 18 ms 696 KB Output is correct
31 Correct 272 ms 676 KB Output is correct
32 Correct 269 ms 668 KB Output is correct
33 Correct 265 ms 668 KB Output is correct
34 Correct 272 ms 676 KB Output is correct
35 Correct 266 ms 668 KB Output is correct
36 Correct 297 ms 664 KB Output is correct
37 Incorrect 84 ms 812 KB Output isn't correct
38 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 0 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 6 ms 692 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 26 ms 596 KB Output is correct
11 Correct 29 ms 724 KB Output is correct
12 Correct 5 ms 596 KB Output is correct
13 Correct 4 ms 596 KB Output is correct
14 Correct 24 ms 596 KB Output is correct
15 Correct 24 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 12 ms 596 KB Output is correct
18 Correct 17 ms 688 KB Output is correct
19 Correct 22 ms 596 KB Output is correct
20 Correct 27 ms 688 KB Output is correct
21 Correct 118 ms 672 KB Output is correct
22 Correct 158 ms 676 KB Output is correct
23 Correct 88 ms 596 KB Output is correct
24 Correct 239 ms 664 KB Output is correct
25 Correct 236 ms 716 KB Output is correct
26 Correct 264 ms 688 KB Output is correct
27 Correct 272 ms 716 KB Output is correct
28 Correct 264 ms 684 KB Output is correct
29 Correct 264 ms 680 KB Output is correct
30 Correct 18 ms 696 KB Output is correct
31 Correct 272 ms 676 KB Output is correct
32 Correct 269 ms 668 KB Output is correct
33 Correct 265 ms 668 KB Output is correct
34 Correct 272 ms 676 KB Output is correct
35 Correct 266 ms 668 KB Output is correct
36 Correct 297 ms 664 KB Output is correct
37 Incorrect 84 ms 812 KB Output isn't correct
38 Halted 0 ms 0 KB -