답안 #651046

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
651046	2022-10-16T15:50:32 Z	dsyz	Cryptography (NOI20_crypto)	C++17	100 / 100	136 ms	15160 KB

Crypto

#include <bits/stdc++.h>
using namespace std;
using ll=long long;
#define MAXN (300006)

int n;
ll P[MAXN], f[MAXN], A[MAXN];
vector<ll> d;
struct fen {
	ll fw[MAXN];
	fen() {
		memset(fw, 0, sizeof fw);
	}
	void update(int x,ll nval) {
		for(;x<MAXN;x+=x&(-x)) fw[x]+=nval;
	}
	ll sum(int x) {
		ll res = 0;
		for(;x;x-=x&(-x)) res+=fw[x];
		return res;
	}
} ft;
ll mod=1e9+7;
int main(){
	f[0]=1; for(int i=1;i<MAXN;++i) f[i]=f[i-1]*i%mod; 
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin>>n;
	for(int i=0;i<n;++i) cin>>P[i], d.push_back(P[i]);
	sort(d.begin(), d.end()), d.resize(unique(d.begin(), d.end())-d.begin());
	for(int i=0;i<n;++i) P[i] = lower_bound(d.begin(), d.end(), P[i]) - d.begin() + 1;
	for(int i=n-1;i>=0;--i) {
		A[i] = ft.sum(P[i] - 1);
		ft.update(P[i], 1);
	}
	ll ans = 0;
	for(int i=0;i<n;++i) {
		ans += A[i] * f[n-i-1] % mod;
		ans %= mod;
	}
	cout<<(ans+1)%mod<<'\n';
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4948 KB	Output is correct
2	Correct	5 ms	4948 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4948 KB	Output is correct
2	Correct	5 ms	4948 KB	Output is correct
3	Correct	5 ms	5032 KB	Output is correct
4	Correct	5 ms	5036 KB	Output is correct
5	Correct	5 ms	4948 KB	Output is correct
6	Correct	5 ms	4948 KB	Output is correct
7	Correct	5 ms	4948 KB	Output is correct
8	Correct	5 ms	5076 KB	Output is correct
9	Correct	5 ms	4948 KB	Output is correct
10	Correct	5 ms	5036 KB	Output is correct
11	Correct	5 ms	5032 KB	Output is correct
12	Correct	5 ms	4948 KB	Output is correct
13	Correct	5 ms	5004 KB	Output is correct
14	Correct	5 ms	4976 KB	Output is correct
15	Correct	5 ms	5040 KB	Output is correct
16	Correct	5 ms	4948 KB	Output is correct
17	Correct	5 ms	4948 KB	Output is correct
18	Correct	5 ms	4948 KB	Output is correct
19	Correct	5 ms	5036 KB	Output is correct
20	Correct	5 ms	5036 KB	Output is correct
21	Correct	5 ms	4948 KB	Output is correct
22	Correct	5 ms	4948 KB	Output is correct
23	Correct	5 ms	4948 KB	Output is correct
24	Correct	5 ms	4948 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	4948 KB	Output is correct
2	Correct	70 ms	15076 KB	Output is correct
3	Correct	71 ms	15068 KB	Output is correct
4	Correct	71 ms	15108 KB	Output is correct
5	Correct	79 ms	15004 KB	Output is correct
6	Correct	69 ms	15016 KB	Output is correct
7	Correct	72 ms	15040 KB	Output is correct
8	Correct	71 ms	15040 KB	Output is correct
9	Correct	76 ms	14984 KB	Output is correct
10	Correct	72 ms	15020 KB	Output is correct
11	Correct	78 ms	15024 KB	Output is correct
12	Correct	69 ms	15072 KB	Output is correct
13	Correct	69 ms	15020 KB	Output is correct
14	Correct	74 ms	15136 KB	Output is correct
15	Correct	71 ms	14988 KB	Output is correct
16	Correct	71 ms	15028 KB	Output is correct
17	Correct	70 ms	15084 KB	Output is correct
18	Correct	70 ms	15100 KB	Output is correct
19	Correct	75 ms	15136 KB	Output is correct
20	Correct	68 ms	15060 KB	Output is correct
21	Correct	68 ms	15064 KB	Output is correct

Subtask #4
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4964 KB	Output is correct
2	Correct	65 ms	14020 KB	Output is correct
3	Correct	66 ms	14040 KB	Output is correct
4	Correct	68 ms	14112 KB	Output is correct
5	Correct	63 ms	14224 KB	Output is correct
6	Correct	64 ms	14064 KB	Output is correct
7	Correct	63 ms	14080 KB	Output is correct
8	Correct	65 ms	14112 KB	Output is correct
9	Correct	66 ms	14024 KB	Output is correct
10	Correct	64 ms	14068 KB	Output is correct
11	Correct	64 ms	14068 KB	Output is correct
12	Correct	63 ms	14108 KB	Output is correct
13	Correct	69 ms	14144 KB	Output is correct
14	Correct	65 ms	14172 KB	Output is correct
15	Correct	66 ms	14108 KB	Output is correct
16	Correct	63 ms	14036 KB	Output is correct
17	Correct	68 ms	14108 KB	Output is correct
18	Correct	63 ms	14108 KB	Output is correct
19	Correct	62 ms	14108 KB	Output is correct
20	Correct	65 ms	14092 KB	Output is correct
21	Correct	65 ms	14116 KB	Output is correct

Subtask #5
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4948 KB	Output is correct
2	Correct	5 ms	5160 KB	Output is correct
3	Correct	5 ms	5044 KB	Output is correct
4	Correct	6 ms	5048 KB	Output is correct
5	Correct	6 ms	5076 KB	Output is correct
6	Correct	7 ms	5076 KB	Output is correct
7	Correct	5 ms	5048 KB	Output is correct
8	Correct	5 ms	5048 KB	Output is correct
9	Correct	5 ms	5044 KB	Output is correct
10	Correct	6 ms	5076 KB	Output is correct
11	Correct	5 ms	5140 KB	Output is correct
12	Correct	5 ms	5048 KB	Output is correct
13	Correct	5 ms	5076 KB	Output is correct
14	Correct	5 ms	5076 KB	Output is correct
15	Correct	5 ms	5036 KB	Output is correct
16	Correct	5 ms	5076 KB	Output is correct
17	Correct	5 ms	5048 KB	Output is correct
18	Correct	6 ms	5048 KB	Output is correct
19	Correct	6 ms	5076 KB	Output is correct
20	Correct	5 ms	5076 KB	Output is correct
21	Correct	6 ms	5144 KB	Output is correct
22	Correct	6 ms	5076 KB	Output is correct

Subtask #6
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4948 KB	Output is correct
2	Correct	5 ms	4948 KB	Output is correct
3	Correct	5 ms	5032 KB	Output is correct
4	Correct	5 ms	5036 KB	Output is correct
5	Correct	5 ms	4948 KB	Output is correct
6	Correct	5 ms	4948 KB	Output is correct
7	Correct	5 ms	4948 KB	Output is correct
8	Correct	5 ms	5076 KB	Output is correct
9	Correct	5 ms	4948 KB	Output is correct
10	Correct	5 ms	5036 KB	Output is correct
11	Correct	5 ms	5032 KB	Output is correct
12	Correct	5 ms	4948 KB	Output is correct
13	Correct	5 ms	5004 KB	Output is correct
14	Correct	5 ms	4976 KB	Output is correct
15	Correct	5 ms	5040 KB	Output is correct
16	Correct	5 ms	4948 KB	Output is correct
17	Correct	5 ms	4948 KB	Output is correct
18	Correct	5 ms	4948 KB	Output is correct
19	Correct	5 ms	5036 KB	Output is correct
20	Correct	5 ms	5036 KB	Output is correct
21	Correct	5 ms	4948 KB	Output is correct
22	Correct	5 ms	4948 KB	Output is correct
23	Correct	5 ms	4948 KB	Output is correct
24	Correct	5 ms	4948 KB	Output is correct
25	Correct	5 ms	4948 KB	Output is correct
26	Correct	5 ms	5160 KB	Output is correct
27	Correct	5 ms	5044 KB	Output is correct
28	Correct	6 ms	5048 KB	Output is correct
29	Correct	6 ms	5076 KB	Output is correct
30	Correct	7 ms	5076 KB	Output is correct
31	Correct	5 ms	5048 KB	Output is correct
32	Correct	5 ms	5048 KB	Output is correct
33	Correct	5 ms	5044 KB	Output is correct
34	Correct	6 ms	5076 KB	Output is correct
35	Correct	5 ms	5140 KB	Output is correct
36	Correct	5 ms	5048 KB	Output is correct
37	Correct	5 ms	5076 KB	Output is correct
38	Correct	5 ms	5076 KB	Output is correct
39	Correct	5 ms	5036 KB	Output is correct
40	Correct	5 ms	5076 KB	Output is correct
41	Correct	5 ms	5048 KB	Output is correct
42	Correct	6 ms	5048 KB	Output is correct
43	Correct	6 ms	5076 KB	Output is correct
44	Correct	5 ms	5076 KB	Output is correct
45	Correct	6 ms	5144 KB	Output is correct
46	Correct	6 ms	5076 KB	Output is correct
47	Correct	5 ms	5032 KB	Output is correct
48	Correct	5 ms	5144 KB	Output is correct
49	Correct	5 ms	5076 KB	Output is correct
50	Correct	5 ms	5092 KB	Output is correct
51	Correct	6 ms	5176 KB	Output is correct
52	Correct	6 ms	5160 KB	Output is correct
53	Correct	5 ms	5076 KB	Output is correct
54	Correct	5 ms	5076 KB	Output is correct
55	Correct	6 ms	5060 KB	Output is correct
56	Correct	5 ms	5076 KB	Output is correct
57	Correct	6 ms	5172 KB	Output is correct
58	Correct	6 ms	5076 KB	Output is correct
59	Correct	5 ms	5076 KB	Output is correct
60	Correct	5 ms	5076 KB	Output is correct
61	Correct	5 ms	4948 KB	Output is correct
62	Correct	6 ms	5076 KB	Output is correct
63	Correct	5 ms	5076 KB	Output is correct
64	Correct	6 ms	5076 KB	Output is correct
65	Correct	5 ms	5144 KB	Output is correct
66	Correct	6 ms	5176 KB	Output is correct
67	Correct	6 ms	5172 KB	Output is correct
68	Correct	5 ms	5076 KB	Output is correct

Subtask #7
19.0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4964 KB	Output is correct
2	Correct	65 ms	14020 KB	Output is correct
3	Correct	66 ms	14040 KB	Output is correct
4	Correct	68 ms	14112 KB	Output is correct
5	Correct	63 ms	14224 KB	Output is correct
6	Correct	64 ms	14064 KB	Output is correct
7	Correct	63 ms	14080 KB	Output is correct
8	Correct	65 ms	14112 KB	Output is correct
9	Correct	66 ms	14024 KB	Output is correct
10	Correct	64 ms	14068 KB	Output is correct
11	Correct	64 ms	14068 KB	Output is correct
12	Correct	63 ms	14108 KB	Output is correct
13	Correct	69 ms	14144 KB	Output is correct
14	Correct	65 ms	14172 KB	Output is correct
15	Correct	66 ms	14108 KB	Output is correct
16	Correct	63 ms	14036 KB	Output is correct
17	Correct	68 ms	14108 KB	Output is correct
18	Correct	63 ms	14108 KB	Output is correct
19	Correct	62 ms	14108 KB	Output is correct
20	Correct	65 ms	14092 KB	Output is correct
21	Correct	65 ms	14116 KB	Output is correct
22	Correct	5 ms	4948 KB	Output is correct
23	Correct	5 ms	5160 KB	Output is correct
24	Correct	5 ms	5044 KB	Output is correct
25	Correct	6 ms	5048 KB	Output is correct
26	Correct	6 ms	5076 KB	Output is correct
27	Correct	7 ms	5076 KB	Output is correct
28	Correct	5 ms	5048 KB	Output is correct
29	Correct	5 ms	5048 KB	Output is correct
30	Correct	5 ms	5044 KB	Output is correct
31	Correct	6 ms	5076 KB	Output is correct
32	Correct	5 ms	5140 KB	Output is correct
33	Correct	5 ms	5048 KB	Output is correct
34	Correct	5 ms	5076 KB	Output is correct
35	Correct	5 ms	5076 KB	Output is correct
36	Correct	5 ms	5036 KB	Output is correct
37	Correct	5 ms	5076 KB	Output is correct
38	Correct	5 ms	5048 KB	Output is correct
39	Correct	6 ms	5048 KB	Output is correct
40	Correct	6 ms	5076 KB	Output is correct
41	Correct	5 ms	5076 KB	Output is correct
42	Correct	6 ms	5144 KB	Output is correct
43	Correct	6 ms	5076 KB	Output is correct
44	Correct	4 ms	5028 KB	Output is correct
45	Correct	116 ms	14120 KB	Output is correct
46	Correct	123 ms	14080 KB	Output is correct
47	Correct	116 ms	14060 KB	Output is correct
48	Correct	115 ms	14044 KB	Output is correct
49	Correct	114 ms	14108 KB	Output is correct
50	Correct	114 ms	14032 KB	Output is correct
51	Correct	117 ms	14128 KB	Output is correct
52	Correct	120 ms	14060 KB	Output is correct
53	Correct	118 ms	14080 KB	Output is correct
54	Correct	116 ms	14052 KB	Output is correct
55	Correct	117 ms	14092 KB	Output is correct
56	Correct	121 ms	14116 KB	Output is correct
57	Correct	116 ms	14068 KB	Output is correct
58	Correct	5 ms	4948 KB	Output is correct
59	Correct	115 ms	14108 KB	Output is correct
60	Correct	116 ms	14092 KB	Output is correct
61	Correct	120 ms	14108 KB	Output is correct
62	Correct	118 ms	14264 KB	Output is correct
63	Correct	117 ms	14208 KB	Output is correct
64	Correct	114 ms	14100 KB	Output is correct
65	Correct	116 ms	14112 KB	Output is correct

Subtask #8
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	4948 KB	Output is correct
2	Correct	5 ms	4948 KB	Output is correct
3	Correct	5 ms	5032 KB	Output is correct
4	Correct	5 ms	5036 KB	Output is correct
5	Correct	5 ms	4948 KB	Output is correct
6	Correct	5 ms	4948 KB	Output is correct
7	Correct	5 ms	4948 KB	Output is correct
8	Correct	5 ms	5076 KB	Output is correct
9	Correct	5 ms	4948 KB	Output is correct
10	Correct	5 ms	5036 KB	Output is correct
11	Correct	5 ms	5032 KB	Output is correct
12	Correct	5 ms	4948 KB	Output is correct
13	Correct	5 ms	5004 KB	Output is correct
14	Correct	5 ms	4976 KB	Output is correct
15	Correct	5 ms	5040 KB	Output is correct
16	Correct	5 ms	4948 KB	Output is correct
17	Correct	5 ms	4948 KB	Output is correct
18	Correct	5 ms	4948 KB	Output is correct
19	Correct	5 ms	5036 KB	Output is correct
20	Correct	5 ms	5036 KB	Output is correct
21	Correct	5 ms	4948 KB	Output is correct
22	Correct	5 ms	4948 KB	Output is correct
23	Correct	5 ms	4948 KB	Output is correct
24	Correct	5 ms	4948 KB	Output is correct
25	Correct	4 ms	4948 KB	Output is correct
26	Correct	70 ms	15076 KB	Output is correct
27	Correct	71 ms	15068 KB	Output is correct
28	Correct	71 ms	15108 KB	Output is correct
29	Correct	79 ms	15004 KB	Output is correct
30	Correct	69 ms	15016 KB	Output is correct
31	Correct	72 ms	15040 KB	Output is correct
32	Correct	71 ms	15040 KB	Output is correct
33	Correct	76 ms	14984 KB	Output is correct
34	Correct	72 ms	15020 KB	Output is correct
35	Correct	78 ms	15024 KB	Output is correct
36	Correct	69 ms	15072 KB	Output is correct
37	Correct	69 ms	15020 KB	Output is correct
38	Correct	74 ms	15136 KB	Output is correct
39	Correct	71 ms	14988 KB	Output is correct
40	Correct	71 ms	15028 KB	Output is correct
41	Correct	70 ms	15084 KB	Output is correct
42	Correct	70 ms	15100 KB	Output is correct
43	Correct	75 ms	15136 KB	Output is correct
44	Correct	68 ms	15060 KB	Output is correct
45	Correct	68 ms	15064 KB	Output is correct
46	Correct	5 ms	4964 KB	Output is correct
47	Correct	65 ms	14020 KB	Output is correct
48	Correct	66 ms	14040 KB	Output is correct
49	Correct	68 ms	14112 KB	Output is correct
50	Correct	63 ms	14224 KB	Output is correct
51	Correct	64 ms	14064 KB	Output is correct
52	Correct	63 ms	14080 KB	Output is correct
53	Correct	65 ms	14112 KB	Output is correct
54	Correct	66 ms	14024 KB	Output is correct
55	Correct	64 ms	14068 KB	Output is correct
56	Correct	64 ms	14068 KB	Output is correct
57	Correct	63 ms	14108 KB	Output is correct
58	Correct	69 ms	14144 KB	Output is correct
59	Correct	65 ms	14172 KB	Output is correct
60	Correct	66 ms	14108 KB	Output is correct
61	Correct	63 ms	14036 KB	Output is correct
62	Correct	68 ms	14108 KB	Output is correct
63	Correct	63 ms	14108 KB	Output is correct
64	Correct	62 ms	14108 KB	Output is correct
65	Correct	65 ms	14092 KB	Output is correct
66	Correct	65 ms	14116 KB	Output is correct
67	Correct	5 ms	4948 KB	Output is correct
68	Correct	5 ms	5160 KB	Output is correct
69	Correct	5 ms	5044 KB	Output is correct
70	Correct	6 ms	5048 KB	Output is correct
71	Correct	6 ms	5076 KB	Output is correct
72	Correct	7 ms	5076 KB	Output is correct
73	Correct	5 ms	5048 KB	Output is correct
74	Correct	5 ms	5048 KB	Output is correct
75	Correct	5 ms	5044 KB	Output is correct
76	Correct	6 ms	5076 KB	Output is correct
77	Correct	5 ms	5140 KB	Output is correct
78	Correct	5 ms	5048 KB	Output is correct
79	Correct	5 ms	5076 KB	Output is correct
80	Correct	5 ms	5076 KB	Output is correct
81	Correct	5 ms	5036 KB	Output is correct
82	Correct	5 ms	5076 KB	Output is correct
83	Correct	5 ms	5048 KB	Output is correct
84	Correct	6 ms	5048 KB	Output is correct
85	Correct	6 ms	5076 KB	Output is correct
86	Correct	5 ms	5076 KB	Output is correct
87	Correct	6 ms	5144 KB	Output is correct
88	Correct	6 ms	5076 KB	Output is correct
89	Correct	5 ms	5032 KB	Output is correct
90	Correct	5 ms	5144 KB	Output is correct
91	Correct	5 ms	5076 KB	Output is correct
92	Correct	5 ms	5092 KB	Output is correct
93	Correct	6 ms	5176 KB	Output is correct
94	Correct	6 ms	5160 KB	Output is correct
95	Correct	5 ms	5076 KB	Output is correct
96	Correct	5 ms	5076 KB	Output is correct
97	Correct	6 ms	5060 KB	Output is correct
98	Correct	5 ms	5076 KB	Output is correct
99	Correct	6 ms	5172 KB	Output is correct
100	Correct	6 ms	5076 KB	Output is correct
101	Correct	5 ms	5076 KB	Output is correct
102	Correct	5 ms	5076 KB	Output is correct
103	Correct	5 ms	4948 KB	Output is correct
104	Correct	6 ms	5076 KB	Output is correct
105	Correct	5 ms	5076 KB	Output is correct
106	Correct	6 ms	5076 KB	Output is correct
107	Correct	5 ms	5144 KB	Output is correct
108	Correct	6 ms	5176 KB	Output is correct
109	Correct	6 ms	5172 KB	Output is correct
110	Correct	5 ms	5076 KB	Output is correct
111	Correct	4 ms	5028 KB	Output is correct
112	Correct	116 ms	14120 KB	Output is correct
113	Correct	123 ms	14080 KB	Output is correct
114	Correct	116 ms	14060 KB	Output is correct
115	Correct	115 ms	14044 KB	Output is correct
116	Correct	114 ms	14108 KB	Output is correct
117	Correct	114 ms	14032 KB	Output is correct
118	Correct	117 ms	14128 KB	Output is correct
119	Correct	120 ms	14060 KB	Output is correct
120	Correct	118 ms	14080 KB	Output is correct
121	Correct	116 ms	14052 KB	Output is correct
122	Correct	117 ms	14092 KB	Output is correct
123	Correct	121 ms	14116 KB	Output is correct
124	Correct	116 ms	14068 KB	Output is correct
125	Correct	5 ms	4948 KB	Output is correct
126	Correct	115 ms	14108 KB	Output is correct
127	Correct	116 ms	14092 KB	Output is correct
128	Correct	120 ms	14108 KB	Output is correct
129	Correct	118 ms	14264 KB	Output is correct
130	Correct	117 ms	14208 KB	Output is correct
131	Correct	114 ms	14100 KB	Output is correct
132	Correct	116 ms	14112 KB	Output is correct
133	Correct	4 ms	4948 KB	Output is correct
134	Correct	131 ms	15108 KB	Output is correct
135	Correct	127 ms	15080 KB	Output is correct
136	Correct	118 ms	15064 KB	Output is correct
137	Correct	124 ms	14980 KB	Output is correct
138	Correct	123 ms	15112 KB	Output is correct
139	Correct	127 ms	15160 KB	Output is correct
140	Correct	120 ms	15008 KB	Output is correct
141	Correct	123 ms	15028 KB	Output is correct
142	Correct	128 ms	15132 KB	Output is correct
143	Correct	126 ms	15060 KB	Output is correct
144	Correct	124 ms	15084 KB	Output is correct
145	Correct	124 ms	15000 KB	Output is correct
146	Correct	132 ms	15064 KB	Output is correct
147	Correct	5 ms	4948 KB	Output is correct
148	Correct	124 ms	15128 KB	Output is correct
149	Correct	122 ms	15060 KB	Output is correct
150	Correct	126 ms	15076 KB	Output is correct
151	Correct	136 ms	15068 KB	Output is correct
152	Correct	119 ms	15104 KB	Output is correct
153	Correct	124 ms	15000 KB	Output is correct
154	Correct	121 ms	15032 KB	Output is correct

답안 #651046

Compilation message