oj.uz

답안 #492561

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
492561 2021-12-08T00:48:36 Z anonymous Cryptography (NOI20_crypto) C++14
35 / 100
 96 ms 9104 KB 
#include <iostream>
#include <algorithm>
#define MAXN 300005
#define LL long long
#define MOD 1000000007
using namespace std;

int N,P[MAXN], Lookup[MAXN];
LL fac[MAXN]={1}, ans;

class Fenwick {
    int BIT[MAXN];
public:
    void upd(int x) {
        for (; x<=N; x+= x&(-x)) {BIT[x]++;}
    }
    int ask(int p) {
        int res = 0;
        for (; p>0; p-=p&(-p)) {res += BIT[p];}
        return res;
    }
} FT;

int main() {
    //freopen("cryptin.txt","r",stdin);
    scanf("%d",&N);
    for (LL i=1; i<=N; i++) {
        scanf("%d",&P[i]);
        Lookup[i] = P[i];
        fac[i] = (i*fac[i-1]) % MOD;
    }
    sort(Lookup+1, Lookup+N+1);
    for (int i=1; i<=N; i++) {
        LL ord = lower_bound(Lookup+1, Lookup+N+1, P[i]) - Lookup;
        ans = (ans + fac[N-i]*(ord-1-FT.ask(ord))) % MOD;
        FT.upd(ord);
    }
    printf("%lld", ans+1);
}

Compilation message

Crypto.cpp: In function 'int main()':
Crypto.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~
Crypto.cpp:28:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |         scanf("%d",&P[i]);
      |         ~~~~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 304 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 69 ms 8936 KB Output is correct
3 Correct 66 ms 9044 KB Output is correct
4 Correct 71 ms 8940 KB Output is correct
5 Correct 66 ms 9028 KB Output is correct
6 Correct 74 ms 9028 KB Output is correct
7 Correct 96 ms 9028 KB Output is correct
8 Correct 70 ms 9104 KB Output is correct
9 Correct 67 ms 9008 KB Output is correct
10 Correct 65 ms 8984 KB Output is correct
11 Correct 68 ms 9028 KB Output is correct
12 Correct 72 ms 9040 KB Output is correct
13 Correct 91 ms 9004 KB Output is correct
14 Correct 66 ms 9028 KB Output is correct
15 Correct 74 ms 9004 KB Output is correct
16 Correct 68 ms 9052 KB Output is correct
17 Correct 66 ms 9004 KB Output is correct
18 Correct 96 ms 8952 KB Output is correct
19 Correct 77 ms 8960 KB Output is correct
20 Correct 68 ms 8984 KB Output is correct
21 Correct 66 ms 8972 KB Output is correct

Subtask #4
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 308 KB Output is correct
2 Correct 64 ms 7980 KB Output is correct
3 Correct 65 ms 8044 KB Output is correct
4 Correct 68 ms 7976 KB Output is correct
5 Correct 63 ms 8100 KB Output is correct
6 Correct 60 ms 8060 KB Output is correct
7 Correct 59 ms 8004 KB Output is correct
8 Correct 79 ms 7992 KB Output is correct
9 Correct 62 ms 8092 KB Output is correct
10 Correct 60 ms 8056 KB Output is correct
11 Correct 69 ms 8008 KB Output is correct
12 Correct 63 ms 8092 KB Output is correct
13 Correct 67 ms 8036 KB Output is correct
14 Correct 63 ms 7976 KB Output is correct
15 Correct 60 ms 8044 KB Output is correct
16 Correct 62 ms 8084 KB Output is correct
17 Correct 65 ms 8044 KB Output is correct
18 Correct 62 ms 8004 KB Output is correct
19 Correct 62 ms 8072 KB Output is correct
20 Correct 67 ms 8072 KB Output is correct
21 Correct 62 ms 8068 KB Output is correct

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 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 320 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 2 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Incorrect 0 ms 204 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 304 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 320 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 2 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Incorrect 0 ms 204 KB Output isn't correct
40 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 308 KB Output is correct
2 Correct 64 ms 7980 KB Output is correct
3 Correct 65 ms 8044 KB Output is correct
4 Correct 68 ms 7976 KB Output is correct
5 Correct 63 ms 8100 KB Output is correct
6 Correct 60 ms 8060 KB Output is correct
7 Correct 59 ms 8004 KB Output is correct
8 Correct 79 ms 7992 KB Output is correct
9 Correct 62 ms 8092 KB Output is correct
10 Correct 60 ms 8056 KB Output is correct
11 Correct 69 ms 8008 KB Output is correct
12 Correct 63 ms 8092 KB Output is correct
13 Correct 67 ms 8036 KB Output is correct
14 Correct 63 ms 7976 KB Output is correct
15 Correct 60 ms 8044 KB Output is correct
16 Correct 62 ms 8084 KB Output is correct
17 Correct 65 ms 8044 KB Output is correct
18 Correct 62 ms 8004 KB Output is correct
19 Correct 62 ms 8072 KB Output is correct
20 Correct 67 ms 8072 KB Output is correct
21 Correct 62 ms 8068 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 320 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Incorrect 0 ms 204 KB Output isn't correct
37 Halted 0 ms 0 KB -

Subtask #8
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 304 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 69 ms 8936 KB Output is correct
27 Correct 66 ms 9044 KB Output is correct
28 Correct 71 ms 8940 KB Output is correct
29 Correct 66 ms 9028 KB Output is correct
30 Correct 74 ms 9028 KB Output is correct
31 Correct 96 ms 9028 KB Output is correct
32 Correct 70 ms 9104 KB Output is correct
33 Correct 67 ms 9008 KB Output is correct
34 Correct 65 ms 8984 KB Output is correct
35 Correct 68 ms 9028 KB Output is correct
36 Correct 72 ms 9040 KB Output is correct
37 Correct 91 ms 9004 KB Output is correct
38 Correct 66 ms 9028 KB Output is correct
39 Correct 74 ms 9004 KB Output is correct
40 Correct 68 ms 9052 KB Output is correct
41 Correct 66 ms 9004 KB Output is correct
42 Correct 96 ms 8952 KB Output is correct
43 Correct 77 ms 8960 KB Output is correct
44 Correct 68 ms 8984 KB Output is correct
45 Correct 66 ms 8972 KB Output is correct
46 Correct 0 ms 308 KB Output is correct
47 Correct 64 ms 7980 KB Output is correct
48 Correct 65 ms 8044 KB Output is correct
49 Correct 68 ms 7976 KB Output is correct
50 Correct 63 ms 8100 KB Output is correct
51 Correct 60 ms 8060 KB Output is correct
52 Correct 59 ms 8004 KB Output is correct
53 Correct 79 ms 7992 KB Output is correct
54 Correct 62 ms 8092 KB Output is correct
55 Correct 60 ms 8056 KB Output is correct
56 Correct 69 ms 8008 KB Output is correct
57 Correct 63 ms 8092 KB Output is correct
58 Correct 67 ms 8036 KB Output is correct
59 Correct 63 ms 7976 KB Output is correct
60 Correct 60 ms 8044 KB Output is correct
61 Correct 62 ms 8084 KB Output is correct
62 Correct 65 ms 8044 KB Output is correct
63 Correct 62 ms 8004 KB Output is correct
64 Correct 62 ms 8072 KB Output is correct
65 Correct 67 ms 8072 KB Output is correct
66 Correct 62 ms 8068 KB Output is correct
67 Correct 0 ms 204 KB Output is correct
68 Correct 1 ms 332 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 1 ms 320 KB Output is correct
72 Correct 1 ms 332 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 1 ms 332 KB Output is correct
75 Correct 1 ms 332 KB Output is correct
76 Correct 2 ms 332 KB Output is correct
77 Correct 1 ms 332 KB Output is correct
78 Correct 1 ms 332 KB Output is correct
79 Correct 2 ms 332 KB Output is correct
80 Correct 1 ms 332 KB Output is correct
81 Incorrect 0 ms 204 KB Output isn't correct
82 Halted 0 ms 0 KB -