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답안 #102600

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
102600 2019-03-26T07:05:56 Z Minnakhmetov Skyscraper (JOI16_skyscraper) C++14
20 / 100
 2000 ms 18472 KB 
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <cstring>
#include <unordered_map>
#include <unordered_set>

using namespace std;

#define ll long long
#define all(aaa) aaa.begin(), aaa.end()
#pragma warning(disable : 4996)

const int N = 101, S = 2e5 + 1, MOD = 1e9 + 7;
int a[N], b[N], dp[2][3][N][S];

void f(int &a, int b) {
	a += b;
	while (a >= MOD)
		a -= MOD;
}

signed main() {
#ifdef HOME
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int n, l;
	cin >> n >> l;

	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}

	sort(a, a + n);
	reverse(a, a + n);

	for (int i = 0; i < n; i++) {
		a[i] -= a[n - 1];
	}

	for (int i = n - 1; i >= 0; i--) {
		b[i] += b[i + 1] + a[i];
	}


	dp[1][0][0][0] = 1;
	dp[1][2][0][a[0] + a[0]] = 1;
	dp[1][1][0][a[0]] = 2;
	
	for (int i = 1, q = 1; i < n; i++, q ^= 1) {
		int mx = b[i + 1] * 2 + l;
		for (int x = 0; x < 3; x++) {
			for (int j = 0; j < i; j++) {
				for (int k = 0; k <= (a[i - 1] << 1); k++) {
					if (dp[q][x][j][k]) {
						int cur = dp[q][x][j][k];
						if (x) {
							int cur2 = cur * x;
							if (cur2 >= MOD)
								cur2 -= MOD;
							f(dp[q ^ 1][x - 1][j][k - a[i]], cur2);
							f(dp[q ^ 1][x][j][k], cur2);
							if (k + a[i] <= mx)
								f(dp[q ^ 1][x - 1][j + 1][k + a[i]], cur2);
							if (k + a[i] + a[i] <= mx)
								f(dp[q ^ 1][x][j + 1][k + a[i] + a[i]], cur2);
						}
						cur = cur * (ll)j % MOD;
						if (j) {
							int cur2 = cur + cur;
							if (cur2 >= MOD)
								cur2 -= MOD; 
							f(dp[q ^ 1][x][j][k], cur2);
							if (k + a[i] + a[i] <= mx)
								f(dp[q ^ 1][x][j + 1][k + a[i] + a[i]], cur);
							f(dp[q ^ 1][x][j - 1][k - a[i] - a[i]], cur);
						}
						dp[q][x][j][k] = 0;
					}
				}
			}
		}
		a[i] += a[i - 1];
	}
	

	int ans = 0;
	
	for (int i = 0; i <= l; i++) {
		f(ans, dp[n & 1][0][0][i]);
	}

	cout << ans;
	
	return 0;
}

Compilation message

skyscraper.cpp:41:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable : 4996)

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 512 KB Output is correct
5 Correct 3 ms 640 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 3 ms 512 KB Output is correct
10 Correct 3 ms 512 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 640 KB Output is correct
2 Correct 3 ms 640 KB Output is correct
3 Correct 3 ms 640 KB Output is correct
4 Correct 3 ms 640 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 2 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 3 ms 640 KB Output is correct
9 Correct 2 ms 640 KB Output is correct
10 Correct 3 ms 512 KB Output is correct

Subtask #3
0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 512 KB Output is correct
5 Correct 3 ms 640 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 3 ms 512 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 3 ms 640 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 3 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 3 ms 512 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 3 ms 640 KB Output is correct
18 Correct 3 ms 640 KB Output is correct
19 Correct 2 ms 640 KB Output is correct
20 Correct 3 ms 512 KB Output is correct
21 Correct 15 ms 1152 KB Output is correct
22 Correct 198 ms 3620 KB Output is correct
23 Execution timed out 2009 ms 18472 KB Time limit exceeded
24 Halted 0 ms 0 KB -