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Submission #43980

# Submission time Handle Problem Language Result Execution time Memory
43980 2018-03-29T02:57:21 Z MatheusLealV Asceticism (JOI18_asceticism) C++17
100 / 100
 53 ms 2236 KB 
#include <bits/stdc++.h>
#define N 200030
#define mod 1000000007
using namespace std;
typedef long long ll;

ll n, m, ans, pot[N], fat[N];

ll Pow(ll x, ll p)
{
	if(!p) return 1LL;

	ll ans = Pow(x, p/2);

	ans = (ans*ans)%mod;

	if(p & 1) return (ans*x)%mod;

	return ans;
}

ll inverse(ll x){
	return Pow(x, mod - 2)%mod;
}

ll Choose(ll a, ll b)
{
	ll B = (fat[b]*fat[a - b])%mod;

	return (fat[a]*inverse(B))%mod;
}

int32_t main()
{
	ios::sync_with_stdio(false); cin.tie(0);

	cin>>n>>m;

	pot[0] = fat[0] = 1;

	m--;

	for(int i = 1; i < N; i++) fat[i] = (i*fat[i - 1])%mod;

	for(int k = 0; k <= m + 1; k++)
	{
		ll sign = (k%2 == 0 ? 1 : -1);

		ans = (ans + ((sign*Choose(n + 1, k)*Pow(m + 1 - k, n))%mod) )%mod;
	}

	cout<<(mod + ans)%mod<<'\n';
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1912 KB Output is correct
2 Correct 5 ms 1912 KB Output is correct
3 Correct 4 ms 1948 KB Output is correct
4 Correct 4 ms 2004 KB Output is correct
5 Correct 4 ms 2004 KB Output is correct
6 Correct 4 ms 2004 KB Output is correct
7 Correct 4 ms 2024 KB Output is correct
8 Correct 4 ms 2028 KB Output is correct
9 Correct 4 ms 2028 KB Output is correct
10 Correct 4 ms 2028 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1912 KB Output is correct
2 Correct 5 ms 1912 KB Output is correct
3 Correct 4 ms 1948 KB Output is correct
4 Correct 4 ms 2004 KB Output is correct
5 Correct 4 ms 2004 KB Output is correct
6 Correct 4 ms 2004 KB Output is correct
7 Correct 4 ms 2024 KB Output is correct
8 Correct 4 ms 2028 KB Output is correct
9 Correct 4 ms 2028 KB Output is correct
10 Correct 4 ms 2028 KB Output is correct
11 Correct 4 ms 2028 KB Output is correct
12 Correct 5 ms 2080 KB Output is correct
13 Correct 4 ms 2080 KB Output is correct
14 Correct 4 ms 2132 KB Output is correct
15 Correct 4 ms 2132 KB Output is correct
16 Correct 4 ms 2152 KB Output is correct
17 Correct 4 ms 2152 KB Output is correct
18 Correct 4 ms 2184 KB Output is correct
19 Correct 4 ms 2184 KB Output is correct
20 Correct 4 ms 2184 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1912 KB Output is correct
2 Correct 5 ms 1912 KB Output is correct
3 Correct 4 ms 1948 KB Output is correct
4 Correct 4 ms 2004 KB Output is correct
5 Correct 4 ms 2004 KB Output is correct
6 Correct 4 ms 2004 KB Output is correct
7 Correct 4 ms 2024 KB Output is correct
8 Correct 4 ms 2028 KB Output is correct
9 Correct 4 ms 2028 KB Output is correct
10 Correct 4 ms 2028 KB Output is correct
11 Correct 4 ms 2028 KB Output is correct
12 Correct 5 ms 2080 KB Output is correct
13 Correct 4 ms 2080 KB Output is correct
14 Correct 4 ms 2132 KB Output is correct
15 Correct 4 ms 2132 KB Output is correct
16 Correct 4 ms 2152 KB Output is correct
17 Correct 4 ms 2152 KB Output is correct
18 Correct 4 ms 2184 KB Output is correct
19 Correct 4 ms 2184 KB Output is correct
20 Correct 4 ms 2184 KB Output is correct
21 Correct 4 ms 2184 KB Output is correct
22 Correct 4 ms 2184 KB Output is correct
23 Correct 4 ms 2184 KB Output is correct
24 Correct 4 ms 2184 KB Output is correct
25 Correct 4 ms 2184 KB Output is correct
26 Correct 4 ms 2184 KB Output is correct
27 Correct 4 ms 2184 KB Output is correct
28 Correct 4 ms 2184 KB Output is correct
29 Correct 4 ms 2184 KB Output is correct
30 Correct 4 ms 2184 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1912 KB Output is correct
2 Correct 5 ms 1912 KB Output is correct
3 Correct 4 ms 1948 KB Output is correct
4 Correct 4 ms 2004 KB Output is correct
5 Correct 4 ms 2004 KB Output is correct
6 Correct 4 ms 2004 KB Output is correct
7 Correct 4 ms 2024 KB Output is correct
8 Correct 4 ms 2028 KB Output is correct
9 Correct 4 ms 2028 KB Output is correct
10 Correct 4 ms 2028 KB Output is correct
11 Correct 4 ms 2028 KB Output is correct
12 Correct 5 ms 2080 KB Output is correct
13 Correct 4 ms 2080 KB Output is correct
14 Correct 4 ms 2132 KB Output is correct
15 Correct 4 ms 2132 KB Output is correct
16 Correct 4 ms 2152 KB Output is correct
17 Correct 4 ms 2152 KB Output is correct
18 Correct 4 ms 2184 KB Output is correct
19 Correct 4 ms 2184 KB Output is correct
20 Correct 4 ms 2184 KB Output is correct
21 Correct 4 ms 2184 KB Output is correct
22 Correct 4 ms 2184 KB Output is correct
23 Correct 4 ms 2184 KB Output is correct
24 Correct 4 ms 2184 KB Output is correct
25 Correct 4 ms 2184 KB Output is correct
26 Correct 4 ms 2184 KB Output is correct
27 Correct 4 ms 2184 KB Output is correct
28 Correct 4 ms 2184 KB Output is correct
29 Correct 4 ms 2184 KB Output is correct
30 Correct 4 ms 2184 KB Output is correct
31 Correct 4 ms 2192 KB Output is correct
32 Correct 4 ms 2192 KB Output is correct
33 Correct 6 ms 2192 KB Output is correct
34 Correct 11 ms 2192 KB Output is correct
35 Correct 44 ms 2192 KB Output is correct
36 Correct 50 ms 2228 KB Output is correct
37 Correct 53 ms 2236 KB Output is correct
38 Correct 10 ms 2236 KB Output is correct
39 Correct 19 ms 2236 KB Output is correct
40 Correct 24 ms 2236 KB Output is correct