# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
407284 |
2021-05-18T17:18:30 Z |
soroush |
Zapina (COCI20_zapina) |
C++17 |
|
162 ms |
1520 KB |
//叫んで 藻掻もがいて 瞼まぶたを腫らしても
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int , int> pii;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int maxn = 400;
const ll mod = 1e9+7;
#define pb push_back
#define endl '\n'
#define dokme(x) cout << x , exit(0)
#define ms(x , y) memset(x , y , sizeof x)
ll pw(ll a, ll b, ll md = mod){ll res = 1;while(b){if(b&1){res=(a*res)%md;}a=(a*a)%md;b>>=1;}return(res);}
ll n , ans , fact[maxn] , inv[maxn] , dp[maxn][maxn];
ll C(ll r , ll n){
return ((fact[n] * inv[r])%mod * inv[n - r])%mod;
}
int32_t main(){
ios::sync_with_stdio(false),cin.tie(0),cout.tie(0);
cin >> n;
ans = pw(n , n);
fact[0] = inv[0] = 1;
for(int i = 1 ; i < maxn ; i ++)
fact[i] = (fact[i - 1] * i) % mod , inv[i] = pw(fact[i] , mod - 2);
dp[0][0] = 1;
for(int i = 1 ; i <= n ; i ++)
for(int j = 0 ; j <= n ; j ++)
for(int k = 0 ; k <= j ; k ++)if(k ^ i)
dp[i][j] = (dp[i][j] + dp[i-1][j-k] * C(k , n - j + k))%mod;
cout << (ans - dp[n][n] + mod)%mod;
return(0);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
328 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
324 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
328 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
324 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
79 ms |
1140 KB |
Output is correct |
18 |
Correct |
2 ms |
460 KB |
Output is correct |
19 |
Correct |
18 ms |
804 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
105 ms |
1304 KB |
Output is correct |
22 |
Correct |
13 ms |
708 KB |
Output is correct |
23 |
Correct |
2 ms |
460 KB |
Output is correct |
24 |
Correct |
23 ms |
824 KB |
Output is correct |
25 |
Correct |
16 ms |
820 KB |
Output is correct |
26 |
Correct |
32 ms |
896 KB |
Output is correct |
27 |
Correct |
153 ms |
1520 KB |
Output is correct |
28 |
Correct |
150 ms |
1408 KB |
Output is correct |
29 |
Correct |
158 ms |
1264 KB |
Output is correct |
30 |
Correct |
157 ms |
1336 KB |
Output is correct |
31 |
Correct |
154 ms |
1352 KB |
Output is correct |
32 |
Correct |
157 ms |
1340 KB |
Output is correct |
33 |
Correct |
158 ms |
1364 KB |
Output is correct |
34 |
Correct |
159 ms |
1384 KB |
Output is correct |
35 |
Correct |
162 ms |
1284 KB |
Output is correct |
36 |
Correct |
159 ms |
1344 KB |
Output is correct |
37 |
Correct |
161 ms |
1416 KB |
Output is correct |