답안 #46728 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
46728	2018-04-22T16:04:41 Z	Trans	Boat (APIO16_boat)	C++14	100 / 100	630 ms	4916 KB

boat

/*
 * Author: Gyeonggeun Kim(kriii)
 * Time Complexity: O(N^3)
 */
#include <stdio.h>
#include <map>
using namespace std;

const long long mod = 1000000007;
int inv[505];

int N,A[505],B[505],L[1005];
long long D[505][1005];

int main()
{
	inv[1] = 1;
	for (int i=2;i<505;i++) inv[i] = (mod - mod / i) * inv[mod % i] % mod;

	scanf ("%d",&N);
	map<int, int> chk;
	for (int i=1;i<=N;i++){
		scanf ("%d %d",&A[i],&B[i]);
		chk[A[i]] = chk[B[i]+1] = 0;
	}

	int c = 0, last = 0;
	for (auto &p : chk){
		L[c] = p.first - last;
		p.second = c++;
		last = p.first;
	}
	c--;

	for (int j=0;j<=c;j++) D[0][j] = 1;
	for (int i=1;i<=N;i++){
		A[i] = chk[A[i]] + 1; B[i] = chk[B[i]+1];
		D[i][0] = 1;
		for (int j=A[i];j<=B[i];j++){
			D[i][j] = (D[i][j] + L[j] * D[i-1][j-1]) % mod;
			long long comb = L[j] - 1; int c = 1;
			for (int k=i-1;k>0;k--){
				if (A[k] <= j && j <= B[k]){
					comb = comb * (L[j] - 1 + c) % mod;
					if (!comb) break;
					comb = comb * inv[++c] % mod;
					D[i][j] = (D[i][j] + comb * D[k-1][j-1]) % mod;
				}
			}
		}
		for (int j=1;j<=c;j++){
			D[i][j] = (D[i][j] + D[i][j-1] + D[i-1][j] - D[i-1][j-1] + mod) % mod;
		}
	}

	long long ans = 0;
	printf ("%lld\n",(D[N][c]+mod-1)%mod);

	return 0;
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:56:12: warning: unused variable 'ans' [-Wunused-variable]
  long long ans = 0;
            ^~~
boat.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d",&N);
  ~~~~~~^~~~~~~~~
boat.cpp:23:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%d %d",&A[i],&B[i]);
   ~~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	11 ms	4216 KB	Output is correct
2	Correct	11 ms	4324 KB	Output is correct
3	Correct	11 ms	4376 KB	Output is correct
4	Correct	11 ms	4376 KB	Output is correct
5	Correct	11 ms	4428 KB	Output is correct
6	Correct	12 ms	4436 KB	Output is correct
7	Correct	11 ms	4436 KB	Output is correct
8	Correct	12 ms	4452 KB	Output is correct
9	Correct	11 ms	4512 KB	Output is correct
10	Correct	11 ms	4512 KB	Output is correct
11	Correct	11 ms	4584 KB	Output is correct
12	Correct	11 ms	4604 KB	Output is correct
13	Correct	11 ms	4604 KB	Output is correct
14	Correct	11 ms	4604 KB	Output is correct
15	Correct	13 ms	4604 KB	Output is correct
16	Correct	5 ms	4604 KB	Output is correct
17	Correct	5 ms	4604 KB	Output is correct
18	Correct	5 ms	4604 KB	Output is correct
19	Correct	5 ms	4604 KB	Output is correct
20	Correct	5 ms	4604 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	11 ms	4216 KB	Output is correct
2	Correct	11 ms	4324 KB	Output is correct
3	Correct	11 ms	4376 KB	Output is correct
4	Correct	11 ms	4376 KB	Output is correct
5	Correct	11 ms	4428 KB	Output is correct
6	Correct	12 ms	4436 KB	Output is correct
7	Correct	11 ms	4436 KB	Output is correct
8	Correct	12 ms	4452 KB	Output is correct
9	Correct	11 ms	4512 KB	Output is correct
10	Correct	11 ms	4512 KB	Output is correct
11	Correct	11 ms	4584 KB	Output is correct
12	Correct	11 ms	4604 KB	Output is correct
13	Correct	11 ms	4604 KB	Output is correct
14	Correct	11 ms	4604 KB	Output is correct
15	Correct	13 ms	4604 KB	Output is correct
16	Correct	5 ms	4604 KB	Output is correct
17	Correct	5 ms	4604 KB	Output is correct
18	Correct	5 ms	4604 KB	Output is correct
19	Correct	5 ms	4604 KB	Output is correct
20	Correct	5 ms	4604 KB	Output is correct
21	Correct	208 ms	4604 KB	Output is correct
22	Correct	200 ms	4604 KB	Output is correct
23	Correct	178 ms	4604 KB	Output is correct
24	Correct	208 ms	4604 KB	Output is correct
25	Correct	214 ms	4604 KB	Output is correct
26	Correct	424 ms	4604 KB	Output is correct
27	Correct	424 ms	4608 KB	Output is correct
28	Correct	438 ms	4608 KB	Output is correct
29	Correct	449 ms	4608 KB	Output is correct
30	Correct	11 ms	4608 KB	Output is correct
31	Correct	11 ms	4608 KB	Output is correct
32	Correct	12 ms	4608 KB	Output is correct
33	Correct	11 ms	4608 KB	Output is correct
34	Correct	12 ms	4608 KB	Output is correct
35	Correct	11 ms	4608 KB	Output is correct
36	Correct	11 ms	4608 KB	Output is correct
37	Correct	11 ms	4608 KB	Output is correct
38	Correct	12 ms	4608 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	4608 KB	Output is correct
2	Correct	4 ms	4608 KB	Output is correct
3	Correct	4 ms	4608 KB	Output is correct
4	Correct	4 ms	4608 KB	Output is correct
5	Correct	4 ms	4608 KB	Output is correct
6	Correct	7 ms	4608 KB	Output is correct
7	Correct	7 ms	4608 KB	Output is correct
8	Correct	7 ms	4608 KB	Output is correct
9	Correct	7 ms	4608 KB	Output is correct
10	Correct	8 ms	4608 KB	Output is correct
11	Correct	5 ms	4608 KB	Output is correct
12	Correct	4 ms	4608 KB	Output is correct
13	Correct	4 ms	4608 KB	Output is correct
14	Correct	4 ms	4608 KB	Output is correct
15	Correct	4 ms	4608 KB	Output is correct
16	Correct	3 ms	4608 KB	Output is correct
17	Correct	3 ms	4608 KB	Output is correct
18	Correct	3 ms	4608 KB	Output is correct
19	Correct	3 ms	4608 KB	Output is correct
20	Correct	3 ms	4608 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	11 ms	4216 KB	Output is correct
2	Correct	11 ms	4324 KB	Output is correct
3	Correct	11 ms	4376 KB	Output is correct
4	Correct	11 ms	4376 KB	Output is correct
5	Correct	11 ms	4428 KB	Output is correct
6	Correct	12 ms	4436 KB	Output is correct
7	Correct	11 ms	4436 KB	Output is correct
8	Correct	12 ms	4452 KB	Output is correct
9	Correct	11 ms	4512 KB	Output is correct
10	Correct	11 ms	4512 KB	Output is correct
11	Correct	11 ms	4584 KB	Output is correct
12	Correct	11 ms	4604 KB	Output is correct
13	Correct	11 ms	4604 KB	Output is correct
14	Correct	11 ms	4604 KB	Output is correct
15	Correct	13 ms	4604 KB	Output is correct
16	Correct	5 ms	4604 KB	Output is correct
17	Correct	5 ms	4604 KB	Output is correct
18	Correct	5 ms	4604 KB	Output is correct
19	Correct	5 ms	4604 KB	Output is correct
20	Correct	5 ms	4604 KB	Output is correct
21	Correct	208 ms	4604 KB	Output is correct
22	Correct	200 ms	4604 KB	Output is correct
23	Correct	178 ms	4604 KB	Output is correct
24	Correct	208 ms	4604 KB	Output is correct
25	Correct	214 ms	4604 KB	Output is correct
26	Correct	424 ms	4604 KB	Output is correct
27	Correct	424 ms	4608 KB	Output is correct
28	Correct	438 ms	4608 KB	Output is correct
29	Correct	449 ms	4608 KB	Output is correct
30	Correct	11 ms	4608 KB	Output is correct
31	Correct	11 ms	4608 KB	Output is correct
32	Correct	12 ms	4608 KB	Output is correct
33	Correct	11 ms	4608 KB	Output is correct
34	Correct	12 ms	4608 KB	Output is correct
35	Correct	11 ms	4608 KB	Output is correct
36	Correct	11 ms	4608 KB	Output is correct
37	Correct	11 ms	4608 KB	Output is correct
38	Correct	12 ms	4608 KB	Output is correct
39	Correct	4 ms	4608 KB	Output is correct
40	Correct	4 ms	4608 KB	Output is correct
41	Correct	4 ms	4608 KB	Output is correct
42	Correct	4 ms	4608 KB	Output is correct
43	Correct	4 ms	4608 KB	Output is correct
44	Correct	7 ms	4608 KB	Output is correct
45	Correct	7 ms	4608 KB	Output is correct
46	Correct	7 ms	4608 KB	Output is correct
47	Correct	7 ms	4608 KB	Output is correct
48	Correct	8 ms	4608 KB	Output is correct
49	Correct	5 ms	4608 KB	Output is correct
50	Correct	4 ms	4608 KB	Output is correct
51	Correct	4 ms	4608 KB	Output is correct
52	Correct	4 ms	4608 KB	Output is correct
53	Correct	4 ms	4608 KB	Output is correct
54	Correct	3 ms	4608 KB	Output is correct
55	Correct	3 ms	4608 KB	Output is correct
56	Correct	3 ms	4608 KB	Output is correct
57	Correct	3 ms	4608 KB	Output is correct
58	Correct	3 ms	4608 KB	Output is correct
59	Correct	268 ms	4608 KB	Output is correct
60	Correct	247 ms	4608 KB	Output is correct
61	Correct	285 ms	4652 KB	Output is correct
62	Correct	290 ms	4808 KB	Output is correct
63	Correct	272 ms	4808 KB	Output is correct
64	Correct	618 ms	4808 KB	Output is correct
65	Correct	629 ms	4808 KB	Output is correct
66	Correct	624 ms	4808 KB	Output is correct
67	Correct	625 ms	4808 KB	Output is correct
68	Correct	630 ms	4808 KB	Output is correct
69	Correct	243 ms	4872 KB	Output is correct
70	Correct	234 ms	4872 KB	Output is correct
71	Correct	233 ms	4872 KB	Output is correct
72	Correct	248 ms	4916 KB	Output is correct
73	Correct	246 ms	4916 KB	Output is correct
74	Correct	36 ms	4916 KB	Output is correct
75	Correct	31 ms	4916 KB	Output is correct
76	Correct	35 ms	4916 KB	Output is correct
77	Correct	32 ms	4916 KB	Output is correct
78	Correct	34 ms	4916 KB	Output is correct

답안 #46728

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 22.0 / 22.0

Subtask #3 27.0 / 27.0

Subtask #4 42.0 / 42.0

Subtask #1
9.0 / 9.0

Subtask #2
22.0 / 22.0

Subtask #3
27.0 / 27.0

Subtask #4
42.0 / 42.0