답안 #66254 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
66254	2018-08-10T05:48:33 Z	김세빈(#1887)	초음속철도 (OJUZ11_rail)	C++11	45 / 100	146 ms	1148 KB

rail

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair <ll, ll> pll;

const ll mod = 1e9 + 7;

pll P[5050];
vector <ll> X;
ll D[10101];
ll n, m;

int main()
{
	ll i, j, s, e;
	
	scanf("%lld%lld", &n, &m);
	
	if(m > 5000) return 0;
	
	X.push_back(1); X.push_back(n);
	
	for(i=1; i<=m; i++){
		scanf("%lld%lld", &s, &e);
		P[i] = pll(e, s);
		X.push_back(s); X.push_back(e);
	}
	
	sort(X.begin(), X.end());
	X.erase(unique(X.begin(), X.end()), X.end());
	
	n = lower_bound(X.begin(), X.end(), n) - X.begin();
	
	sort(P + 1, P + m + 1);
	
	D[0] = 1;
	
	for(i=1; i<=m; i++){
		e = lower_bound(X.begin(), X.end(), P[i].first) - X.begin();
		s = lower_bound(X.begin(), X.end(), P[i].second) - X.begin();
		for(j=0; j<s; j++) D[j] = (D[j] * 2) % mod;
		for(j=e; j>=s; j--) D[e] = (D[e] + D[j]) % mod;
	}
	
	printf("%lld\n", D[n]);
	
	return 0;
}

Compilation message

rail.cpp: In function 'int main()':
rail.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
rail.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld", &s, &e);
   ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	488 KB	Output is correct
3	Correct	2 ms	488 KB	Output is correct
4	Correct	2 ms	488 KB	Output is correct
5	Correct	3 ms	488 KB	Output is correct
6	Correct	2 ms	560 KB	Output is correct
7	Correct	2 ms	560 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	2 ms	560 KB	Output is correct
12	Correct	2 ms	560 KB	Output is correct
13	Correct	2 ms	560 KB	Output is correct
14	Correct	2 ms	584 KB	Output is correct
15	Correct	2 ms	584 KB	Output is correct
16	Correct	2 ms	600 KB	Output is correct
17	Correct	2 ms	600 KB	Output is correct
18	Correct	2 ms	612 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	488 KB	Output is correct
3	Correct	2 ms	488 KB	Output is correct
4	Correct	2 ms	488 KB	Output is correct
5	Correct	3 ms	488 KB	Output is correct
6	Correct	2 ms	560 KB	Output is correct
7	Correct	2 ms	560 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	2 ms	560 KB	Output is correct
12	Correct	2 ms	560 KB	Output is correct
13	Correct	2 ms	560 KB	Output is correct
14	Correct	2 ms	584 KB	Output is correct
15	Correct	2 ms	584 KB	Output is correct
16	Correct	2 ms	600 KB	Output is correct
17	Correct	2 ms	600 KB	Output is correct
18	Correct	2 ms	612 KB	Output is correct
19	Correct	2 ms	612 KB	Output is correct
20	Correct	2 ms	612 KB	Output is correct
21	Correct	2 ms	620 KB	Output is correct
22	Correct	2 ms	620 KB	Output is correct
23	Correct	2 ms	620 KB	Output is correct
24	Correct	2 ms	620 KB	Output is correct
25	Correct	3 ms	620 KB	Output is correct
26	Correct	2 ms	620 KB	Output is correct
27	Correct	2 ms	620 KB	Output is correct
28	Correct	2 ms	620 KB	Output is correct
29	Correct	2 ms	644 KB	Output is correct
30	Correct	2 ms	644 KB	Output is correct
31	Correct	2 ms	644 KB	Output is correct
32	Correct	2 ms	644 KB	Output is correct
33	Correct	2 ms	644 KB	Output is correct
34	Correct	2 ms	644 KB	Output is correct
35	Correct	2 ms	644 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	644 KB	Output is correct
2	Correct	2 ms	644 KB	Output is correct
3	Correct	2 ms	644 KB	Output is correct
4	Correct	23 ms	892 KB	Output is correct
5	Incorrect	2 ms	892 KB	Output isn't correct
6	Incorrect	2 ms	892 KB	Output isn't correct
7	Incorrect	2 ms	892 KB	Output isn't correct
8	Correct	2 ms	892 KB	Output is correct
9	Incorrect	2 ms	892 KB	Output isn't correct
10	Incorrect	2 ms	892 KB	Output isn't correct
11	Incorrect	2 ms	892 KB	Output isn't correct
12	Incorrect	2 ms	892 KB	Output isn't correct
13	Incorrect	2 ms	892 KB	Output isn't correct
14	Incorrect	2 ms	892 KB	Output isn't correct
15	Incorrect	2 ms	892 KB	Output isn't correct
16	Incorrect	2 ms	892 KB	Output isn't correct
17	Incorrect	2 ms	892 KB	Output isn't correct
18	Incorrect	2 ms	892 KB	Output isn't correct
19	Incorrect	2 ms	892 KB	Output isn't correct

Subtask #4
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	488 KB	Output is correct
3	Correct	2 ms	488 KB	Output is correct
4	Correct	2 ms	488 KB	Output is correct
5	Correct	3 ms	488 KB	Output is correct
6	Correct	2 ms	560 KB	Output is correct
7	Correct	2 ms	560 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	2 ms	560 KB	Output is correct
12	Correct	2 ms	560 KB	Output is correct
13	Correct	2 ms	560 KB	Output is correct
14	Correct	2 ms	584 KB	Output is correct
15	Correct	2 ms	584 KB	Output is correct
16	Correct	2 ms	600 KB	Output is correct
17	Correct	2 ms	600 KB	Output is correct
18	Correct	2 ms	612 KB	Output is correct
19	Correct	2 ms	612 KB	Output is correct
20	Correct	2 ms	612 KB	Output is correct
21	Correct	2 ms	620 KB	Output is correct
22	Correct	2 ms	620 KB	Output is correct
23	Correct	2 ms	620 KB	Output is correct
24	Correct	2 ms	620 KB	Output is correct
25	Correct	3 ms	620 KB	Output is correct
26	Correct	2 ms	620 KB	Output is correct
27	Correct	2 ms	620 KB	Output is correct
28	Correct	2 ms	620 KB	Output is correct
29	Correct	2 ms	644 KB	Output is correct
30	Correct	2 ms	644 KB	Output is correct
31	Correct	2 ms	644 KB	Output is correct
32	Correct	2 ms	644 KB	Output is correct
33	Correct	2 ms	644 KB	Output is correct
34	Correct	2 ms	644 KB	Output is correct
35	Correct	2 ms	644 KB	Output is correct
36	Correct	132 ms	1052 KB	Output is correct
37	Correct	89 ms	1052 KB	Output is correct
38	Correct	34 ms	1052 KB	Output is correct
39	Correct	4 ms	1052 KB	Output is correct
40	Correct	31 ms	1052 KB	Output is correct
41	Correct	109 ms	1052 KB	Output is correct
42	Correct	136 ms	1060 KB	Output is correct
43	Correct	2 ms	1060 KB	Output is correct
44	Correct	95 ms	1060 KB	Output is correct
45	Correct	6 ms	1060 KB	Output is correct
46	Correct	85 ms	1060 KB	Output is correct
47	Correct	67 ms	1060 KB	Output is correct
48	Correct	78 ms	1060 KB	Output is correct
49	Correct	8 ms	1060 KB	Output is correct
50	Correct	7 ms	1060 KB	Output is correct
51	Correct	5 ms	1060 KB	Output is correct
52	Correct	9 ms	1060 KB	Output is correct
53	Correct	110 ms	1148 KB	Output is correct
54	Correct	29 ms	1148 KB	Output is correct
55	Correct	146 ms	1148 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	488 KB	Output is correct
3	Correct	2 ms	488 KB	Output is correct
4	Correct	2 ms	488 KB	Output is correct
5	Correct	3 ms	488 KB	Output is correct
6	Correct	2 ms	560 KB	Output is correct
7	Correct	2 ms	560 KB	Output is correct
8	Correct	2 ms	560 KB	Output is correct
9	Correct	2 ms	560 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	2 ms	560 KB	Output is correct
12	Correct	2 ms	560 KB	Output is correct
13	Correct	2 ms	560 KB	Output is correct
14	Correct	2 ms	584 KB	Output is correct
15	Correct	2 ms	584 KB	Output is correct
16	Correct	2 ms	600 KB	Output is correct
17	Correct	2 ms	600 KB	Output is correct
18	Correct	2 ms	612 KB	Output is correct
19	Correct	2 ms	612 KB	Output is correct
20	Correct	2 ms	612 KB	Output is correct
21	Correct	2 ms	620 KB	Output is correct
22	Correct	2 ms	620 KB	Output is correct
23	Correct	2 ms	620 KB	Output is correct
24	Correct	2 ms	620 KB	Output is correct
25	Correct	3 ms	620 KB	Output is correct
26	Correct	2 ms	620 KB	Output is correct
27	Correct	2 ms	620 KB	Output is correct
28	Correct	2 ms	620 KB	Output is correct
29	Correct	2 ms	644 KB	Output is correct
30	Correct	2 ms	644 KB	Output is correct
31	Correct	2 ms	644 KB	Output is correct
32	Correct	2 ms	644 KB	Output is correct
33	Correct	2 ms	644 KB	Output is correct
34	Correct	2 ms	644 KB	Output is correct
35	Correct	2 ms	644 KB	Output is correct
36	Correct	2 ms	644 KB	Output is correct
37	Correct	2 ms	644 KB	Output is correct
38	Correct	2 ms	644 KB	Output is correct
39	Correct	23 ms	892 KB	Output is correct
40	Incorrect	2 ms	892 KB	Output isn't correct
41	Incorrect	2 ms	892 KB	Output isn't correct
42	Incorrect	2 ms	892 KB	Output isn't correct
43	Correct	2 ms	892 KB	Output is correct
44	Incorrect	2 ms	892 KB	Output isn't correct
45	Incorrect	2 ms	892 KB	Output isn't correct
46	Incorrect	2 ms	892 KB	Output isn't correct
47	Incorrect	2 ms	892 KB	Output isn't correct
48	Incorrect	2 ms	892 KB	Output isn't correct
49	Incorrect	2 ms	892 KB	Output isn't correct
50	Incorrect	2 ms	892 KB	Output isn't correct
51	Incorrect	2 ms	892 KB	Output isn't correct
52	Incorrect	2 ms	892 KB	Output isn't correct
53	Incorrect	2 ms	892 KB	Output isn't correct
54	Incorrect	2 ms	892 KB	Output isn't correct
55	Correct	132 ms	1052 KB	Output is correct
56	Correct	89 ms	1052 KB	Output is correct
57	Correct	34 ms	1052 KB	Output is correct
58	Correct	4 ms	1052 KB	Output is correct
59	Correct	31 ms	1052 KB	Output is correct
60	Correct	109 ms	1052 KB	Output is correct
61	Correct	136 ms	1060 KB	Output is correct
62	Correct	2 ms	1060 KB	Output is correct
63	Correct	95 ms	1060 KB	Output is correct
64	Correct	6 ms	1060 KB	Output is correct
65	Correct	85 ms	1060 KB	Output is correct
66	Correct	67 ms	1060 KB	Output is correct
67	Correct	78 ms	1060 KB	Output is correct
68	Correct	8 ms	1060 KB	Output is correct
69	Correct	7 ms	1060 KB	Output is correct
70	Correct	5 ms	1060 KB	Output is correct
71	Correct	9 ms	1060 KB	Output is correct
72	Correct	110 ms	1148 KB	Output is correct
73	Correct	29 ms	1148 KB	Output is correct
74	Correct	146 ms	1148 KB	Output is correct
75	Incorrect	2 ms	1148 KB	Output isn't correct
76	Incorrect	2 ms	1148 KB	Output isn't correct
77	Incorrect	2 ms	1148 KB	Output isn't correct
78	Incorrect	2 ms	1148 KB	Output isn't correct
79	Incorrect	2 ms	1148 KB	Output isn't correct
80	Incorrect	2 ms	1148 KB	Output isn't correct
81	Incorrect	2 ms	1148 KB	Output isn't correct
82	Incorrect	3 ms	1148 KB	Output isn't correct
83	Incorrect	2 ms	1148 KB	Output isn't correct
84	Incorrect	2 ms	1148 KB	Output isn't correct
85	Incorrect	2 ms	1148 KB	Output isn't correct
86	Incorrect	2 ms	1148 KB	Output isn't correct
87	Incorrect	2 ms	1148 KB	Output isn't correct
88	Incorrect	2 ms	1148 KB	Output isn't correct
89	Incorrect	2 ms	1148 KB	Output isn't correct
90	Incorrect	3 ms	1148 KB	Output isn't correct
91	Incorrect	3 ms	1148 KB	Output isn't correct
92	Incorrect	2 ms	1148 KB	Output isn't correct
93	Incorrect	3 ms	1148 KB	Output isn't correct
94	Incorrect	2 ms	1148 KB	Output isn't correct
95	Incorrect	2 ms	1148 KB	Output isn't correct

답안 #66254

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 8.0 / 8.0

Subtask #3 0 / 25.0

Subtask #4 27.0 / 27.0

Subtask #5 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
8.0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
27.0 / 27.0

Subtask #5
0 / 30.0