oj.uz

답안 #951641

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
951641 2024-03-22T08:31:02 Z Irate Cryptography (NOI20_crypto) C++17
25 / 100
 40 ms 11128 KB 
#include<bits/stdc++.h>
using namespace std;
const int MOD = 1e9 + 7;
const int mxN = 3e5 + 5;
int fact[mxN];
struct FenwickTree{
    vector<int>fen;
    int sz;
    FenwickTree(int n){
        sz = n;
        fen.resize(n + 1);
    }
    void Update(int pos){
        while(pos <= sz){
            fen[pos]++;
            pos += (pos & -pos);
        }
    }
    int Sum(int pos){
        int sum = 0;
        while(pos > 0){
            sum += fen[pos];
            pos -= (pos & -pos);
        }
        return sum;
    }
};
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    fact[0] = 1;
    for(int i = 1;i < mxN;++i){
        fact[i] = (long long)fact[i - 1] * i % MOD;
    }
    int n;
    cin >> n;
    vector<int>v(n);
    vector<pair<int, int>>compress;
    for(int i = 0;i < n;++i){
        cin >> v[i];
        compress.push_back({v[i], i});
    }
    sort(compress.begin(), compress.end());
    int num = 1;
    v[compress[0].second] = num;
    FenwickTree tree(n);
    for(int i = 1;i < n;++i){
        if(compress[i].first != compress[i - 1].first)num++;
        v[compress[i].second] = num;
    }    
    int res = 0;
    for(int i = 1;i <= n;++i){
        int k = v[i - 1] - tree.Sum(v[i - 1]);
        res += (long long)fact[n - i] * (k - 1) % MOD;
        tree.Update(v[i - 1]);
    }
    cout << res + 1 << '\n';
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Correct 2 ms 1628 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Correct 2 ms 1628 KB Output is correct
3 Correct 2 ms 1628 KB Output is correct
4 Correct 2 ms 1628 KB Output is correct
5 Correct 2 ms 1632 KB Output is correct
6 Correct 2 ms 1628 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1628 KB Output is correct
10 Correct 2 ms 1880 KB Output is correct
11 Correct 2 ms 1628 KB Output is correct
12 Correct 2 ms 1636 KB Output is correct
13 Correct 2 ms 1624 KB Output is correct
14 Correct 2 ms 1472 KB Output is correct
15 Correct 2 ms 1624 KB Output is correct
16 Correct 2 ms 1628 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 1628 KB Output is correct
19 Correct 2 ms 1628 KB Output is correct
20 Correct 2 ms 1628 KB Output is correct
21 Correct 2 ms 1628 KB Output is correct
22 Correct 2 ms 1636 KB Output is correct
23 Correct 2 ms 1628 KB Output is correct
24 Correct 2 ms 1628 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1628 KB Output is correct
2 Incorrect 39 ms 11128 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Correct 33 ms 9032 KB Output is correct
3 Correct 32 ms 10400 KB Output is correct
4 Correct 33 ms 9608 KB Output is correct
5 Correct 32 ms 10964 KB Output is correct
6 Correct 32 ms 9168 KB Output is correct
7 Correct 32 ms 10708 KB Output is correct
8 Correct 32 ms 9388 KB Output is correct
9 Correct 32 ms 8916 KB Output is correct
10 Correct 32 ms 10452 KB Output is correct
11 Correct 32 ms 10024 KB Output is correct
12 Correct 33 ms 10184 KB Output is correct
13 Correct 32 ms 9928 KB Output is correct
14 Correct 37 ms 9868 KB Output is correct
15 Correct 37 ms 10696 KB Output is correct
16 Correct 32 ms 10524 KB Output is correct
17 Correct 33 ms 10124 KB Output is correct
18 Correct 34 ms 10700 KB Output is correct
19 Correct 32 ms 9684 KB Output is correct
20 Correct 40 ms 9788 KB Output is correct
21 Correct 32 ms 9672 KB Output is correct

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Incorrect 3 ms 1628 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Correct 2 ms 1628 KB Output is correct
3 Correct 2 ms 1628 KB Output is correct
4 Correct 2 ms 1628 KB Output is correct
5 Correct 2 ms 1632 KB Output is correct
6 Correct 2 ms 1628 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1628 KB Output is correct
10 Correct 2 ms 1880 KB Output is correct
11 Correct 2 ms 1628 KB Output is correct
12 Correct 2 ms 1636 KB Output is correct
13 Correct 2 ms 1624 KB Output is correct
14 Correct 2 ms 1472 KB Output is correct
15 Correct 2 ms 1624 KB Output is correct
16 Correct 2 ms 1628 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 1628 KB Output is correct
19 Correct 2 ms 1628 KB Output is correct
20 Correct 2 ms 1628 KB Output is correct
21 Correct 2 ms 1628 KB Output is correct
22 Correct 2 ms 1636 KB Output is correct
23 Correct 2 ms 1628 KB Output is correct
24 Correct 2 ms 1628 KB Output is correct
25 Correct 2 ms 1624 KB Output is correct
26 Incorrect 3 ms 1628 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Correct 33 ms 9032 KB Output is correct
3 Correct 32 ms 10400 KB Output is correct
4 Correct 33 ms 9608 KB Output is correct
5 Correct 32 ms 10964 KB Output is correct
6 Correct 32 ms 9168 KB Output is correct
7 Correct 32 ms 10708 KB Output is correct
8 Correct 32 ms 9388 KB Output is correct
9 Correct 32 ms 8916 KB Output is correct
10 Correct 32 ms 10452 KB Output is correct
11 Correct 32 ms 10024 KB Output is correct
12 Correct 33 ms 10184 KB Output is correct
13 Correct 32 ms 9928 KB Output is correct
14 Correct 37 ms 9868 KB Output is correct
15 Correct 37 ms 10696 KB Output is correct
16 Correct 32 ms 10524 KB Output is correct
17 Correct 33 ms 10124 KB Output is correct
18 Correct 34 ms 10700 KB Output is correct
19 Correct 32 ms 9684 KB Output is correct
20 Correct 40 ms 9788 KB Output is correct
21 Correct 32 ms 9672 KB Output is correct
22 Correct 2 ms 1624 KB Output is correct
23 Incorrect 3 ms 1628 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #8
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Correct 2 ms 1628 KB Output is correct
3 Correct 2 ms 1628 KB Output is correct
4 Correct 2 ms 1628 KB Output is correct
5 Correct 2 ms 1632 KB Output is correct
6 Correct 2 ms 1628 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1628 KB Output is correct
10 Correct 2 ms 1880 KB Output is correct
11 Correct 2 ms 1628 KB Output is correct
12 Correct 2 ms 1636 KB Output is correct
13 Correct 2 ms 1624 KB Output is correct
14 Correct 2 ms 1472 KB Output is correct
15 Correct 2 ms 1624 KB Output is correct
16 Correct 2 ms 1628 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 1628 KB Output is correct
19 Correct 2 ms 1628 KB Output is correct
20 Correct 2 ms 1628 KB Output is correct
21 Correct 2 ms 1628 KB Output is correct
22 Correct 2 ms 1636 KB Output is correct
23 Correct 2 ms 1628 KB Output is correct
24 Correct 2 ms 1628 KB Output is correct
25 Correct 2 ms 1628 KB Output is correct
26 Incorrect 39 ms 11128 KB Output isn't correct
27 Halted 0 ms 0 KB -