oj.uz

답안 #950880

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
950880 2024-03-20T21:14:14 Z Soshi85 Tents (JOI18_tents) C++17
100 / 100
 59 ms 70992 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>

using namespace std;/*
using ll = long long;
using pii = pair<ll, ll>;
using piii = pair<ll, pii>;

#define pb              push_back
#define F               first
#define S               second
#define len(x)          (int)x.size()
#define all(x)          x.begin(),x.end()
#define file            freopen("connect.in", "r", stdin);freopen("connect.out", "w", stdout);
#define kill(x)         {cout << x << '\n'; continue;}*/
#define int             long long
	
const int maxn = 3e3 + 5/*, maxm = 2e5, LG = 20*/, MOD = 1e9+7;// 998244353
//const ll inf =  6e18;

//priority_queue< int, vector<int>, greater<int>> pq;  min heap
//priority_queue< int, vector<int>,  less<int> > pq;   max heap
//mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

int h, w, dp[maxn][maxn];
signed main() {
	ios::sync_with_stdio(0), cin.tie(0);
	
	cin >> h >> w;
	
	for(int i = 0; i <= h; ++i) dp[i][0] = 1;
	for(int i = 0; i <= w; ++i) dp[0][i] = 1;

	dp[1][1] = 5;
	for(int i = 2; i <= max(h, w); ++i) {
		dp[1][i] = 4 + i-1 + dp[1][i-1];
		dp[1][i] %= MOD;
		dp[i][1] = dp[1][i];
	}

	for(int i = 2; i <= h; ++i)
		for(int j = 2; j <= w; ++j) {
			dp[i][j] = (4 * j * dp[i-1][j-1] % MOD);
			dp[i][j] += ((j*(j-1)/2 % MOD) * dp[i-1][j-2] % MOD) % MOD;
			dp[i][j] += ((j*(i-1)  % MOD) * dp[i-2][j-1] % MOD) % MOD;
			dp[i][j] += dp[i-1][j];
			dp[i][j] %= MOD;
		}

	cout << dp[h][w] - 1;
}

Subtask #1
48.0 / 48.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 2 ms 8536 KB Output is correct

Subtask #2
52.0 / 52.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 2 ms 8536 KB Output is correct
13 Correct 11 ms 43608 KB Output is correct
14 Correct 10 ms 55888 KB Output is correct
15 Correct 43 ms 66136 KB Output is correct
16 Correct 6 ms 37468 KB Output is correct
17 Correct 12 ms 43596 KB Output is correct
18 Correct 13 ms 33372 KB Output is correct
19 Correct 45 ms 70236 KB Output is correct
20 Correct 36 ms 57948 KB Output is correct
21 Correct 26 ms 49756 KB Output is correct
22 Correct 26 ms 51800 KB Output is correct
23 Correct 18 ms 70492 KB Output is correct
24 Correct 59 ms 70992 KB Output is correct
25 Correct 54 ms 62040 KB Output is correct
26 Correct 50 ms 68328 KB Output is correct
27 Correct 56 ms 70380 KB Output is correct