oj.uz

Submission #663554

# Submission time Handle Problem Language Result Execution time Memory
663554 2022-11-27T02:48:11 Z Ninja_Kunai Bootfall (IZhO17_bootfall) C++14
28 / 100
 1000 ms 692 KB 
/**
*    Author :  Nguyen Tuan Vu
*    Created : 27.11.2022
**/

#pragma GCC optimize("O2")
#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, n / 3) {
	    	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 4 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 7 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 4 ms 684 KB Output is correct
8 Correct 7 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 2 ms 596 KB Output is correct
2 Correct 4 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 7 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 4 ms 684 KB Output is correct
8 Correct 7 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 35 ms 664 KB Output is correct
11 Correct 34 ms 596 KB Output is correct
12 Correct 5 ms 688 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 30 ms 684 KB Output is correct
15 Correct 34 ms 668 KB Output is correct
16 Correct 34 ms 608 KB Output is correct
17 Correct 13 ms 692 KB Output is correct
18 Correct 22 ms 676 KB Output is correct
19 Correct 27 ms 596 KB Output is correct
20 Correct 40 ms 596 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 4 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 7 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 4 ms 684 KB Output is correct
8 Correct 7 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 35 ms 664 KB Output is correct
11 Correct 34 ms 596 KB Output is correct
12 Correct 5 ms 688 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 30 ms 684 KB Output is correct
15 Correct 34 ms 668 KB Output is correct
16 Correct 34 ms 608 KB Output is correct
17 Correct 13 ms 692 KB Output is correct
18 Correct 22 ms 676 KB Output is correct
19 Correct 27 ms 596 KB Output is correct
20 Correct 40 ms 596 KB Output is correct
21 Correct 146 ms 672 KB Output is correct
22 Correct 201 ms 676 KB Output is correct
23 Correct 97 ms 664 KB Output is correct
24 Correct 317 ms 680 KB Output is correct
25 Correct 320 ms 668 KB Output is correct
26 Correct 352 ms 672 KB Output is correct
27 Correct 368 ms 672 KB Output is correct
28 Correct 348 ms 680 KB Output is correct
29 Correct 363 ms 668 KB Output is correct
30 Correct 23 ms 596 KB Output is correct
31 Correct 351 ms 676 KB Output is correct
32 Correct 354 ms 664 KB Output is correct
33 Correct 355 ms 596 KB Output is correct
34 Correct 389 ms 664 KB Output is correct
35 Correct 359 ms 672 KB Output is correct
36 Correct 350 ms 668 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 4 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 7 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 4 ms 684 KB Output is correct
8 Correct 7 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 35 ms 664 KB Output is correct
11 Correct 34 ms 596 KB Output is correct
12 Correct 5 ms 688 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 30 ms 684 KB Output is correct
15 Correct 34 ms 668 KB Output is correct
16 Correct 34 ms 608 KB Output is correct
17 Correct 13 ms 692 KB Output is correct
18 Correct 22 ms 676 KB Output is correct
19 Correct 27 ms 596 KB Output is correct
20 Correct 40 ms 596 KB Output is correct
21 Correct 146 ms 672 KB Output is correct
22 Correct 201 ms 676 KB Output is correct
23 Correct 97 ms 664 KB Output is correct
24 Correct 317 ms 680 KB Output is correct
25 Correct 320 ms 668 KB Output is correct
26 Correct 352 ms 672 KB Output is correct
27 Correct 368 ms 672 KB Output is correct
28 Correct 348 ms 680 KB Output is correct
29 Correct 363 ms 668 KB Output is correct
30 Correct 23 ms 596 KB Output is correct
31 Correct 351 ms 676 KB Output is correct
32 Correct 354 ms 664 KB Output is correct
33 Correct 355 ms 596 KB Output is correct
34 Correct 389 ms 664 KB Output is correct
35 Correct 359 ms 672 KB Output is correct
36 Correct 350 ms 668 KB Output is correct
37 Execution timed out 1086 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 2 ms 596 KB Output is correct
2 Correct 4 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 7 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 4 ms 684 KB Output is correct
8 Correct 7 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 35 ms 664 KB Output is correct
11 Correct 34 ms 596 KB Output is correct
12 Correct 5 ms 688 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 30 ms 684 KB Output is correct
15 Correct 34 ms 668 KB Output is correct
16 Correct 34 ms 608 KB Output is correct
17 Correct 13 ms 692 KB Output is correct
18 Correct 22 ms 676 KB Output is correct
19 Correct 27 ms 596 KB Output is correct
20 Correct 40 ms 596 KB Output is correct
21 Correct 146 ms 672 KB Output is correct
22 Correct 201 ms 676 KB Output is correct
23 Correct 97 ms 664 KB Output is correct
24 Correct 317 ms 680 KB Output is correct
25 Correct 320 ms 668 KB Output is correct
26 Correct 352 ms 672 KB Output is correct
27 Correct 368 ms 672 KB Output is correct
28 Correct 348 ms 680 KB Output is correct
29 Correct 363 ms 668 KB Output is correct
30 Correct 23 ms 596 KB Output is correct
31 Correct 351 ms 676 KB Output is correct
32 Correct 354 ms 664 KB Output is correct
33 Correct 355 ms 596 KB Output is correct
34 Correct 389 ms 664 KB Output is correct
35 Correct 359 ms 672 KB Output is correct
36 Correct 350 ms 668 KB Output is correct
37 Execution timed out 1086 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 2 ms 596 KB Output is correct
2 Correct 4 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 7 ms 596 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 4 ms 684 KB Output is correct
8 Correct 7 ms 596 KB Output is correct
9 Correct 3 ms 596 KB Output is correct
10 Correct 35 ms 664 KB Output is correct
11 Correct 34 ms 596 KB Output is correct
12 Correct 5 ms 688 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 30 ms 684 KB Output is correct
15 Correct 34 ms 668 KB Output is correct
16 Correct 34 ms 608 KB Output is correct
17 Correct 13 ms 692 KB Output is correct
18 Correct 22 ms 676 KB Output is correct
19 Correct 27 ms 596 KB Output is correct
20 Correct 40 ms 596 KB Output is correct
21 Correct 146 ms 672 KB Output is correct
22 Correct 201 ms 676 KB Output is correct
23 Correct 97 ms 664 KB Output is correct
24 Correct 317 ms 680 KB Output is correct
25 Correct 320 ms 668 KB Output is correct
26 Correct 352 ms 672 KB Output is correct
27 Correct 368 ms 672 KB Output is correct
28 Correct 348 ms 680 KB Output is correct
29 Correct 363 ms 668 KB Output is correct
30 Correct 23 ms 596 KB Output is correct
31 Correct 351 ms 676 KB Output is correct
32 Correct 354 ms 664 KB Output is correct
33 Correct 355 ms 596 KB Output is correct
34 Correct 389 ms 664 KB Output is correct
35 Correct 359 ms 672 KB Output is correct
36 Correct 350 ms 668 KB Output is correct
37 Execution timed out 1086 ms 596 KB Time limit exceeded
38 Halted 0 ms 0 KB -