oj.uz

Submission #243441

# Submission time Handle Problem Language Result Execution time Memory
243441 2020-07-01T07:31:09 Z BamiTorabi Skyscraper (JOI16_skyscraper) C++14
100 / 100
 244 ms 2808 KB 
//Sasayego! Sasayego! Shinzou wo Sasageyo!

#include <iostream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <ctime>
#include <cstring>
#include <vector>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <numeric>
#include <bitset>
#include <ctime>
#define debug(x)  cerr << #x << " = " << x << endl
#define lid (id << 1)
#define rid (lid ^ 1)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair <ll, ll> pll;
typedef pair <int, int> pii;

const int maxN = 1e2 + 5;
const int maxK = 1e3 + 5;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;

int a[maxN], arumin[2][maxN][maxK][3];

int main(){
	time_t START = clock();
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int n, L; scanf("%d%d", &n, &L);
	if (n == 1)
		return printf("1\n"), 0;
	for (int i = 1; i <= n; i++)
		scanf("%d", a + i);
	sort(a, a + n + 1);
	for (int i = n; i; i--)
		a[i] -= a[i - 1];
	arumin[1][0][0][1] = 2;
	arumin[1][0][0][2] = 1;
	for (int i = 2; i <= n; i++){
		bool b = i & 1;
		for (int j = 0; j <= i; j++)
			for (int k = 0; k <= L; k++)
				for (int l = 0; l < 3; l++){
					int t = 2 * j + l;
					arumin[b][j][k][l] = 0;
					if (t >= 2 && (t - 2) * a[i] <= k && j > 0)
						arumin[b][j][k][l] = (0ll + arumin[b][j][k][l] + 1ll * arumin[!b][j - 1][k - (t - 2) * a[i]][l] * (j + l - 1) % MOD) % MOD;
					if (t >= 1 && (t - 1) * a[i] <= k && j > 0 && l < 2)
						arumin[b][j][k][l] = (0ll + arumin[b][j][k][l] + 1ll * arumin[!b][j - 1][k - (t - 1) * a[i]][l + 1] * (l + 1) % MOD) % MOD;
					if (t >= 0 && (t + 0) * a[i] <= k)
						arumin[b][j][k][l] = (0ll + arumin[b][j][k][l] + 1ll * arumin[!b][j + 0][k - (t + 0) * a[i]][l] * (2 * j + l) % MOD) % MOD;
					if (t >= 0 && (t + 1) * a[i] <= k && l < 2)
						arumin[b][j][k][l] = (0ll + arumin[b][j][k][l] + 1ll * arumin[!b][j + 0][k - (t + 1) * a[i]][l + 1] * (l + 1) % MOD) % MOD;
					if (t >= 0 && (t + 2) * a[i] <= k)
						arumin[b][j][k][l] = (0ll + arumin[b][j][k][l] + 1ll * arumin[!b][j + 1][k - (t + 2) * a[i]][l] * (j + 1) % MOD) % MOD;
				}
	}
	int ans = 0;
	for (int i = 0; i <= L; i++)
		ans = (0ll + ans + arumin[n & 1][0][i][0]) % MOD;
	printf("%d\n", ans);
	time_t FINISH = clock();
	cerr << "Execution time: " << (ld)(FINISH - START) / CLOCKS_PER_SEC * 1000.0 << " milliseconds.\n";
	return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:37:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int n, L; scanf("%d%d", &n, &L);
            ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:41:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", a + i);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 6 ms 640 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 6 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 6 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct

Subtask #3
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 6 ms 640 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 6 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 5 ms 512 KB Output is correct
12 Correct 5 ms 512 KB Output is correct
13 Correct 5 ms 512 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 6 ms 512 KB Output is correct
16 Correct 5 ms 512 KB Output is correct
17 Correct 5 ms 512 KB Output is correct
18 Correct 5 ms 512 KB Output is correct
19 Correct 5 ms 512 KB Output is correct
20 Correct 5 ms 512 KB Output is correct
21 Correct 6 ms 768 KB Output is correct
22 Correct 188 ms 2168 KB Output is correct
23 Correct 241 ms 2808 KB Output is correct
24 Correct 216 ms 2808 KB Output is correct
25 Correct 240 ms 2808 KB Output is correct
26 Correct 203 ms 2680 KB Output is correct
27 Correct 80 ms 1788 KB Output is correct
28 Correct 101 ms 1804 KB Output is correct
29 Correct 191 ms 2552 KB Output is correct
30 Correct 244 ms 2808 KB Output is correct