oj.uz

Submission #343266

# Submission time Handle Problem Language Result Execution time Memory
343266 2021-01-03T15:25:41 Z sinamhdv Skyscraper (JOI16_skyscraper) C++11
5 / 100
 37 ms 9964 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int mod = 1000 * 1000 * 1000 + 7;
const int INF = 1000 * 1000 * 1000;
const ll LINF = (ll)INF * INF;

#ifdef DEBUG
#define dbg(x) cout << #x << " = " << (x) << endl << flush;
#define dbgr(s, f) { cout << #s << ": "; for (auto _ = (s); _ != (f); _++) cout << *_ << ' '; cout << endl << flush; }
#else
#define dbg(x) ;
#define dbgr(s, f) ;
#endif
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define fast_io ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define msub(a, b) ((mod + ((ll)(a) - (b)) % mod) % mod)
#define mdiv(a, b) ((ll)(a) * poww((b), mod - 2) % mod)
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define mp make_pair
#define fr first
#define sc second
#define endl '\n'

#define MAXN 10
#define MAXL 1100

ll dp[1 << MAXN][MAXN][MAXL];
int n, L;
int a[MAXN];

int32_t main(void)
{
	fast_io;
	cin >> n >> L;
	FOR(i, 0, n)
		cin >> a[i];
	FOR(i, 0, n)
	{
		dp[1 << i][i][0] = 1;
	}
	FOR(mask, 1, 1 << n)
	{
		if (__builtin_popcount(mask) == 1)
			continue;
		FOR(l, 0, L + 1)
		{
			FOR(i, 0, n)
			{
				if (!(mask & (1 << i)))
					continue;
				int nmask = mask ^ (1 << i);
				FOR(j, 0, n)
				{
					if (!(nmask & (1 << j)) || abs(a[i] - a[j]) > l)
						continue;
					dp[mask][i][l] = (dp[mask][i][l] + dp[nmask][j][l - abs(a[i] - a[j])]) % mod;
				}
			}
		}
	}
	ll ans = 0;
	FOR(i, 0, n)
	{
		FOR(j, 0, L + 1)
		{
			ans = (ans + dp[(1 << n) - 1][i][j]) % mod;
		}
	}
	cout << ans << endl;
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 2 ms 1132 KB Output is correct
5 Correct 29 ms 9964 KB Output is correct
6 Correct 27 ms 9452 KB Output is correct
7 Correct 8 ms 5484 KB Output is correct
8 Correct 6 ms 4972 KB Output is correct
9 Correct 37 ms 9708 KB Output is correct
10 Correct 8 ms 5228 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2156 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 2 ms 1132 KB Output is correct
5 Correct 29 ms 9964 KB Output is correct
6 Correct 27 ms 9452 KB Output is correct
7 Correct 8 ms 5484 KB Output is correct
8 Correct 6 ms 4972 KB Output is correct
9 Correct 37 ms 9708 KB Output is correct
10 Correct 8 ms 5228 KB Output is correct
11 Incorrect 2 ms 2156 KB Output isn't correct
12 Halted 0 ms 0 KB -