oj.uz

Submission #151807

# Submission time Handle Problem Language Result Execution time Memory
151807 2019-09-04T21:33:41 Z osaaateiasavtnl Asceticism (JOI18_asceticism) C++14
24 / 100
 3 ms 1272 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long 
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcount
#define ll long long
#define mp make_pair
#define f first
#define s second
const int N = 1e5 + 7, MOD = 1000 * 1000 * 1000 + 7;
int mod(int n) { return (n % MOD + MOD) % MOD; }
int fp(int a, int p) {
    int ans = 1, cur = a;
    for (int i = 0; (1ll << i) <= p; ++i) {
        if ((p >> i) & 1) ans = (ans * cur) % MOD;
        cur = (cur * cur) % MOD;
    }   
    return ans;
}   
int inv(int x) { return fp(x, MOD - 2); }
int dv(int a, int b) { return (a * inv(b)) % MOD; }
int f[N];
int C(int n, int k) { return dv(f[n], (f[n - k] * f[k]) % MOD); }
int eulerian(int n, int m) {
    int ans = 0;
    for (int k = 0; k <= m; ++k) {
        if (k & 1) ans -= C(n + 1, k) * fp(m + 1 - k, n);
        else ans += C(n + 1, k) * fp(m + 1 - k, n);
    }   
    return mod(ans);
}   
signed main() {
    #ifdef HOME
    freopen("input.txt", "r", stdin);
    #else
    ios_base::sync_with_stdio(0); cin.tie(0);
    #endif
    f[0] = 1;
    for (int i = 1; i < N; ++i) f[i] = (f[i - 1] * i) % MOD;
    int n, k;
    cin >> n >> k;
    cout << eulerian(n, k - 1) << '\n';                
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1148 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1148 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1272 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1204 KB Output is correct
14 Correct 3 ms 1116 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1144 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1148 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1272 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1204 KB Output is correct
14 Correct 3 ms 1116 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1144 KB Output is correct
21 Correct 3 ms 1144 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 3 ms 1148 KB Output is correct
24 Correct 3 ms 1148 KB Output is correct
25 Incorrect 3 ms 1144 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1272 KB Output is correct
2 Correct 3 ms 1148 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1272 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1204 KB Output is correct
14 Correct 3 ms 1116 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1144 KB Output is correct
21 Correct 3 ms 1144 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 3 ms 1148 KB Output is correct
24 Correct 3 ms 1148 KB Output is correct
25 Incorrect 3 ms 1144 KB Output isn't correct
26 Halted 0 ms 0 KB -