oj.uz

Submission #329819

# Submission time Handle Problem Language Result Execution time Memory
329819 2020-11-22T17:17:01 Z JiratQ Cryptography (NOI20_crypto) C++14
48 / 100
 229 ms 33876 KB 
#include<bits/stdc++.h>
#define int long long
using namespace std;
int dp[300010];
int fw[300010];

int fac(int n){
    if(dp[n]!=0) return dp[n];
    if(n==0) return 1;
    return dp[n]=(fac(n-1)%1000000007*n);
}

void update(int node,int val){
    while(node<300010){
        fw[node] += val;
        node += (node&-node);
    }
}

int qs(int node){
    int sum=0;
    while(node>0){
        sum += fw[node];
        node -= (node&-node);
    }
    return sum;
}

main(){
    int n;
    cin >> n;
    vector<int> vec;
    for(int i=0;i<n;i++){
        int k;
        scanf("%lld",&k);
        vec.emplace_back(k);
    }
    vector<int> v=vec;
    sort(v.begin(),v.end());
    unordered_map<int,int> mapp;
    int cnt=1;
    for(int i=0;i<n;i++){
        mapp[v[i]]=cnt;
        cnt++;
    }
    for(int i=0;i<n;i++){
        vec[i]=mapp[vec[i]];
    }
    int ans=1;
    for(int i=0;i<n;i++){
        int c=qs(vec[i]);
        update(vec[i],1);
        ans += ((vec[i]-1-c) * fac(n-1-i));
        ans %= 1000000007;
    }
    cout << ans;
}

Compilation message

Crypto.cpp:29:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   29 | main(){
      |      ^
Crypto.cpp: In function 'int main()':
Crypto.cpp:35:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   35 |         scanf("%lld",&k);
      |         ~~~~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 229 ms 33876 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 396 KB Output is correct
2 Incorrect 104 ms 33492 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 2 ms 748 KB Output is correct
3 Correct 2 ms 748 KB Output is correct
4 Correct 3 ms 748 KB Output is correct
5 Correct 2 ms 748 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 2 ms 748 KB Output is correct
8 Correct 2 ms 748 KB Output is correct
9 Correct 2 ms 748 KB Output is correct
10 Correct 2 ms 748 KB Output is correct
11 Correct 2 ms 748 KB Output is correct
12 Correct 2 ms 748 KB Output is correct
13 Correct 2 ms 748 KB Output is correct
14 Correct 2 ms 748 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 2 ms 748 KB Output is correct
17 Correct 2 ms 748 KB Output is correct
18 Correct 3 ms 748 KB Output is correct
19 Correct 2 ms 748 KB Output is correct
20 Correct 2 ms 748 KB Output is correct
21 Correct 2 ms 748 KB Output is correct
22 Correct 2 ms 748 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 2 ms 748 KB Output is correct
27 Correct 2 ms 748 KB Output is correct
28 Correct 3 ms 748 KB Output is correct
29 Correct 2 ms 748 KB Output is correct
30 Correct 2 ms 748 KB Output is correct
31 Correct 2 ms 748 KB Output is correct
32 Correct 2 ms 748 KB Output is correct
33 Correct 2 ms 748 KB Output is correct
34 Correct 2 ms 748 KB Output is correct
35 Correct 2 ms 748 KB Output is correct
36 Correct 2 ms 748 KB Output is correct
37 Correct 2 ms 748 KB Output is correct
38 Correct 2 ms 748 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 2 ms 748 KB Output is correct
41 Correct 2 ms 748 KB Output is correct
42 Correct 3 ms 748 KB Output is correct
43 Correct 2 ms 748 KB Output is correct
44 Correct 2 ms 748 KB Output is correct
45 Correct 2 ms 748 KB Output is correct
46 Correct 2 ms 748 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 2 ms 748 KB Output is correct
49 Correct 2 ms 748 KB Output is correct
50 Correct 2 ms 748 KB Output is correct
51 Correct 3 ms 748 KB Output is correct
52 Correct 2 ms 748 KB Output is correct
53 Correct 2 ms 748 KB Output is correct
54 Correct 2 ms 748 KB Output is correct
55 Correct 2 ms 748 KB Output is correct
56 Correct 2 ms 748 KB Output is correct
57 Correct 2 ms 748 KB Output is correct
58 Correct 2 ms 748 KB Output is correct
59 Correct 2 ms 748 KB Output is correct
60 Correct 2 ms 748 KB Output is correct
61 Correct 1 ms 364 KB Output is correct
62 Correct 2 ms 748 KB Output is correct
63 Correct 3 ms 748 KB Output is correct
64 Correct 3 ms 748 KB Output is correct
65 Correct 2 ms 768 KB Output is correct
66 Correct 3 ms 748 KB Output is correct
67 Correct 6 ms 748 KB Output is correct
68 Correct 2 ms 748 KB Output is correct

Subtask #7
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 396 KB Output is correct
2 Incorrect 104 ms 33492 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Incorrect 229 ms 33876 KB Output isn't correct
27 Halted 0 ms 0 KB -