oj.uz

Submission #663568

# Submission time Handle Problem Language Result Execution time Memory
663568 2022-11-27T02:53:33 Z Ninja_Kunai Bootfall (IZhO17_bootfall) C++17
28 / 100
 1000 ms 716 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 <= 200) {
	    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, 3 * 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 3 ms 596 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 684 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 6 ms 596 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 3 ms 596 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 684 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 6 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 28 ms 596 KB Output is correct
11 Correct 28 ms 684 KB Output is correct
12 Correct 4 ms 596 KB Output is correct
13 Correct 5 ms 684 KB Output is correct
14 Correct 25 ms 688 KB Output is correct
15 Correct 25 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 11 ms 688 KB Output is correct
18 Correct 18 ms 596 KB Output is correct
19 Correct 20 ms 696 KB Output is correct
20 Correct 31 ms 596 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 596 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 684 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 6 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 28 ms 596 KB Output is correct
11 Correct 28 ms 684 KB Output is correct
12 Correct 4 ms 596 KB Output is correct
13 Correct 5 ms 684 KB Output is correct
14 Correct 25 ms 688 KB Output is correct
15 Correct 25 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 11 ms 688 KB Output is correct
18 Correct 18 ms 596 KB Output is correct
19 Correct 20 ms 696 KB Output is correct
20 Correct 31 ms 596 KB Output is correct
21 Correct 117 ms 668 KB Output is correct
22 Correct 154 ms 676 KB Output is correct
23 Correct 75 ms 680 KB Output is correct
24 Correct 245 ms 664 KB Output is correct
25 Correct 265 ms 716 KB Output is correct
26 Correct 271 ms 668 KB Output is correct
27 Correct 288 ms 684 KB Output is correct
28 Correct 281 ms 676 KB Output is correct
29 Correct 306 ms 596 KB Output is correct
30 Correct 18 ms 596 KB Output is correct
31 Correct 293 ms 672 KB Output is correct
32 Correct 274 ms 668 KB Output is correct
33 Correct 267 ms 664 KB Output is correct
34 Correct 282 ms 672 KB Output is correct
35 Correct 303 ms 676 KB Output is correct
36 Correct 278 ms 716 KB Output is correct

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 596 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 684 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 6 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 28 ms 596 KB Output is correct
11 Correct 28 ms 684 KB Output is correct
12 Correct 4 ms 596 KB Output is correct
13 Correct 5 ms 684 KB Output is correct
14 Correct 25 ms 688 KB Output is correct
15 Correct 25 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 11 ms 688 KB Output is correct
18 Correct 18 ms 596 KB Output is correct
19 Correct 20 ms 696 KB Output is correct
20 Correct 31 ms 596 KB Output is correct
21 Correct 117 ms 668 KB Output is correct
22 Correct 154 ms 676 KB Output is correct
23 Correct 75 ms 680 KB Output is correct
24 Correct 245 ms 664 KB Output is correct
25 Correct 265 ms 716 KB Output is correct
26 Correct 271 ms 668 KB Output is correct
27 Correct 288 ms 684 KB Output is correct
28 Correct 281 ms 676 KB Output is correct
29 Correct 306 ms 596 KB Output is correct
30 Correct 18 ms 596 KB Output is correct
31 Correct 293 ms 672 KB Output is correct
32 Correct 274 ms 668 KB Output is correct
33 Correct 267 ms 664 KB Output is correct
34 Correct 282 ms 672 KB Output is correct
35 Correct 303 ms 676 KB Output is correct
36 Correct 278 ms 716 KB Output is correct
37 Execution timed out 1090 ms 596 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 596 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 684 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 6 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 28 ms 596 KB Output is correct
11 Correct 28 ms 684 KB Output is correct
12 Correct 4 ms 596 KB Output is correct
13 Correct 5 ms 684 KB Output is correct
14 Correct 25 ms 688 KB Output is correct
15 Correct 25 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 11 ms 688 KB Output is correct
18 Correct 18 ms 596 KB Output is correct
19 Correct 20 ms 696 KB Output is correct
20 Correct 31 ms 596 KB Output is correct
21 Correct 117 ms 668 KB Output is correct
22 Correct 154 ms 676 KB Output is correct
23 Correct 75 ms 680 KB Output is correct
24 Correct 245 ms 664 KB Output is correct
25 Correct 265 ms 716 KB Output is correct
26 Correct 271 ms 668 KB Output is correct
27 Correct 288 ms 684 KB Output is correct
28 Correct 281 ms 676 KB Output is correct
29 Correct 306 ms 596 KB Output is correct
30 Correct 18 ms 596 KB Output is correct
31 Correct 293 ms 672 KB Output is correct
32 Correct 274 ms 668 KB Output is correct
33 Correct 267 ms 664 KB Output is correct
34 Correct 282 ms 672 KB Output is correct
35 Correct 303 ms 676 KB Output is correct
36 Correct 278 ms 716 KB Output is correct
37 Execution timed out 1090 ms 596 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 596 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 684 KB Output is correct
5 Correct 6 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 6 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 28 ms 596 KB Output is correct
11 Correct 28 ms 684 KB Output is correct
12 Correct 4 ms 596 KB Output is correct
13 Correct 5 ms 684 KB Output is correct
14 Correct 25 ms 688 KB Output is correct
15 Correct 25 ms 688 KB Output is correct
16 Correct 26 ms 596 KB Output is correct
17 Correct 11 ms 688 KB Output is correct
18 Correct 18 ms 596 KB Output is correct
19 Correct 20 ms 696 KB Output is correct
20 Correct 31 ms 596 KB Output is correct
21 Correct 117 ms 668 KB Output is correct
22 Correct 154 ms 676 KB Output is correct
23 Correct 75 ms 680 KB Output is correct
24 Correct 245 ms 664 KB Output is correct
25 Correct 265 ms 716 KB Output is correct
26 Correct 271 ms 668 KB Output is correct
27 Correct 288 ms 684 KB Output is correct
28 Correct 281 ms 676 KB Output is correct
29 Correct 306 ms 596 KB Output is correct
30 Correct 18 ms 596 KB Output is correct
31 Correct 293 ms 672 KB Output is correct
32 Correct 274 ms 668 KB Output is correct
33 Correct 267 ms 664 KB Output is correct
34 Correct 282 ms 672 KB Output is correct
35 Correct 303 ms 676 KB Output is correct
36 Correct 278 ms 716 KB Output is correct
37 Execution timed out 1090 ms 596 KB Time limit exceeded
38 Halted 0 ms 0 KB -