답안 #20364 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
20364	2017-02-07T08:32:25 Z		초음속철도 (OJUZ11_rail)	C++	45 / 100	247 ms	197968 KB

rail

#include<bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef long double llf;
typedef pair<int, int> pi;
const int mod = 1e9 + 7;

int n, m;
int dp[5005][10005];
pi a[5005];
vector<int> v;

int main(){
	scanf("%d %d",&n,&m);
	v.push_back(1);
	v.push_back(n);
	for(int i=0; i<m; i++){
		scanf("%d %d",&a[i].first,&a[i].second);
		v.push_back(a[i].first);
		v.push_back(a[i].second);
	}
	sort(v.begin(), v.end());
	v.resize(unique(v.begin(), v.end()) - v.begin());
	for(int i=0; i<m; i++){
		a[i].first = lower_bound(v.begin(), v.end(), a[i].first) - v.begin();
		a[i].second = lower_bound(v.begin(), v.end(), a[i].second) - v.begin();
	}
	sort(a, a+m);
	dp[m][v.size()-1] = 1;
	for(int i=m-1; i>=0; i--){
		for(int j=0; j<v.size(); j++){
			if(j < a[i].first) dp[i][j] = dp[i+1][j];
			else if(j < a[i].second) dp[i][j] = dp[i+1][j] + dp[i+1][a[i].second];
			else dp[i][j] = 2 * dp[i+1][j];
			dp[i][j] %= mod;
		}
	}
	cout << dp[0][0];
}

Compilation message

rail.cpp: In function 'int main()':
rail.cpp:31:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0; j<v.size(); j++){
                 ^
rail.cpp:14:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
                      ^
rail.cpp:18:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&a[i].first,&a[i].second);
                                          ^

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	400 KB	Output is correct
2	Correct	2 ms	440 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	464 KB	Output is correct
7	Correct	2 ms	464 KB	Output is correct
8	Correct	2 ms	464 KB	Output is correct
9	Correct	2 ms	464 KB	Output is correct
10	Correct	2 ms	464 KB	Output is correct
11	Correct	2 ms	464 KB	Output is correct
12	Correct	2 ms	464 KB	Output is correct
13	Correct	2 ms	464 KB	Output is correct
14	Correct	2 ms	464 KB	Output is correct
15	Correct	2 ms	464 KB	Output is correct
16	Correct	2 ms	464 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	400 KB	Output is correct
2	Correct	2 ms	440 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	464 KB	Output is correct
7	Correct	2 ms	464 KB	Output is correct
8	Correct	2 ms	464 KB	Output is correct
9	Correct	2 ms	464 KB	Output is correct
10	Correct	2 ms	464 KB	Output is correct
11	Correct	2 ms	464 KB	Output is correct
12	Correct	2 ms	464 KB	Output is correct
13	Correct	2 ms	464 KB	Output is correct
14	Correct	2 ms	464 KB	Output is correct
15	Correct	2 ms	464 KB	Output is correct
16	Correct	2 ms	464 KB	Output is correct
17	Correct	2 ms	464 KB	Output is correct
18	Correct	2 ms	464 KB	Output is correct
19	Correct	2 ms	464 KB	Output is correct
20	Correct	2 ms	464 KB	Output is correct
21	Correct	2 ms	464 KB	Output is correct
22	Correct	2 ms	464 KB	Output is correct
23	Correct	2 ms	464 KB	Output is correct
24	Correct	2 ms	464 KB	Output is correct
25	Correct	2 ms	464 KB	Output is correct
26	Correct	2 ms	464 KB	Output is correct
27	Correct	2 ms	464 KB	Output is correct
28	Correct	2 ms	464 KB	Output is correct
29	Correct	2 ms	464 KB	Output is correct
30	Correct	2 ms	464 KB	Output is correct
31	Correct	2 ms	464 KB	Output is correct
32	Correct	2 ms	464 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	464 KB	Output is correct
2	Correct	2 ms	464 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	50 ms	47376 KB	Output is correct
5	Runtime error	127 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
6	Runtime error	208 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
7	Runtime error	199 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
8	Correct	2 ms	47376 KB	Output is correct
9	Runtime error	194 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
10	Runtime error	200 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
11	Runtime error	72 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
12	Runtime error	208 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
13	Runtime error	214 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
14	Runtime error	84 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
15	Runtime error	78 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
16	Runtime error	213 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
17	Runtime error	193 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
18	Runtime error	246 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)

Subtask #4
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	400 KB	Output is correct
2	Correct	2 ms	440 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	464 KB	Output is correct
7	Correct	2 ms	464 KB	Output is correct
8	Correct	2 ms	464 KB	Output is correct
9	Correct	2 ms	464 KB	Output is correct
10	Correct	2 ms	464 KB	Output is correct
11	Correct	2 ms	464 KB	Output is correct
12	Correct	2 ms	464 KB	Output is correct
13	Correct	2 ms	464 KB	Output is correct
14	Correct	2 ms	464 KB	Output is correct
15	Correct	2 ms	464 KB	Output is correct
16	Correct	2 ms	464 KB	Output is correct
17	Correct	2 ms	464 KB	Output is correct
18	Correct	2 ms	464 KB	Output is correct
19	Correct	2 ms	464 KB	Output is correct
20	Correct	2 ms	464 KB	Output is correct
21	Correct	2 ms	464 KB	Output is correct
22	Correct	2 ms	464 KB	Output is correct
23	Correct	2 ms	464 KB	Output is correct
24	Correct	2 ms	464 KB	Output is correct
25	Correct	2 ms	464 KB	Output is correct
26	Correct	2 ms	464 KB	Output is correct
27	Correct	2 ms	464 KB	Output is correct
28	Correct	2 ms	464 KB	Output is correct
29	Correct	2 ms	464 KB	Output is correct
30	Correct	2 ms	464 KB	Output is correct
31	Correct	2 ms	464 KB	Output is correct
32	Correct	2 ms	464 KB	Output is correct
33	Correct	238 ms	197968 KB	Output is correct
34	Correct	175 ms	197968 KB	Output is correct
35	Correct	83 ms	197968 KB	Output is correct
36	Correct	16 ms	197968 KB	Output is correct
37	Correct	240 ms	197968 KB	Output is correct
38	Correct	247 ms	197968 KB	Output is correct
39	Correct	2 ms	197968 KB	Output is correct
40	Correct	176 ms	197968 KB	Output is correct
41	Correct	16 ms	197968 KB	Output is correct
42	Correct	134 ms	197968 KB	Output is correct
43	Correct	129 ms	197968 KB	Output is correct
44	Correct	128 ms	197968 KB	Output is correct
45	Correct	18 ms	197968 KB	Output is correct
46	Correct	17 ms	197968 KB	Output is correct
47	Correct	20 ms	197968 KB	Output is correct
48	Correct	16 ms	197968 KB	Output is correct
49	Correct	227 ms	197968 KB	Output is correct
50	Correct	51 ms	197968 KB	Output is correct
51	Correct	235 ms	197968 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	400 KB	Output is correct
2	Correct	2 ms	440 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	464 KB	Output is correct
7	Correct	2 ms	464 KB	Output is correct
8	Correct	2 ms	464 KB	Output is correct
9	Correct	2 ms	464 KB	Output is correct
10	Correct	2 ms	464 KB	Output is correct
11	Correct	2 ms	464 KB	Output is correct
12	Correct	2 ms	464 KB	Output is correct
13	Correct	2 ms	464 KB	Output is correct
14	Correct	2 ms	464 KB	Output is correct
15	Correct	2 ms	464 KB	Output is correct
16	Correct	2 ms	464 KB	Output is correct
17	Correct	2 ms	464 KB	Output is correct
18	Correct	2 ms	464 KB	Output is correct
19	Correct	2 ms	464 KB	Output is correct
20	Correct	2 ms	464 KB	Output is correct
21	Correct	2 ms	464 KB	Output is correct
22	Correct	2 ms	464 KB	Output is correct
23	Correct	2 ms	464 KB	Output is correct
24	Correct	2 ms	464 KB	Output is correct
25	Correct	2 ms	464 KB	Output is correct
26	Correct	2 ms	464 KB	Output is correct
27	Correct	2 ms	464 KB	Output is correct
28	Correct	2 ms	464 KB	Output is correct
29	Correct	2 ms	464 KB	Output is correct
30	Correct	2 ms	464 KB	Output is correct
31	Correct	2 ms	464 KB	Output is correct
32	Correct	2 ms	464 KB	Output is correct
33	Correct	2 ms	464 KB	Output is correct
34	Correct	2 ms	464 KB	Output is correct
35	Correct	2 ms	464 KB	Output is correct
36	Correct	50 ms	47376 KB	Output is correct
37	Runtime error	127 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
38	Runtime error	208 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
39	Runtime error	199 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
40	Correct	2 ms	47376 KB	Output is correct
41	Runtime error	194 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
42	Runtime error	200 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
43	Runtime error	72 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
44	Runtime error	208 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
45	Runtime error	214 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
46	Runtime error	84 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
47	Runtime error	78 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
48	Runtime error	213 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
49	Runtime error	193 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
50	Runtime error	246 ms	47376 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
51	Correct	238 ms	197968 KB	Output is correct
52	Correct	175 ms	197968 KB	Output is correct
53	Correct	83 ms	197968 KB	Output is correct
54	Correct	16 ms	197968 KB	Output is correct
55	Correct	240 ms	197968 KB	Output is correct
56	Correct	247 ms	197968 KB	Output is correct
57	Correct	2 ms	197968 KB	Output is correct
58	Correct	176 ms	197968 KB	Output is correct
59	Correct	16 ms	197968 KB	Output is correct
60	Correct	134 ms	197968 KB	Output is correct
61	Correct	129 ms	197968 KB	Output is correct
62	Correct	128 ms	197968 KB	Output is correct
63	Correct	18 ms	197968 KB	Output is correct
64	Correct	17 ms	197968 KB	Output is correct
65	Correct	20 ms	197968 KB	Output is correct
66	Correct	16 ms	197968 KB	Output is correct
67	Correct	227 ms	197968 KB	Output is correct
68	Correct	51 ms	197968 KB	Output is correct
69	Correct	235 ms	197968 KB	Output is correct
70	Runtime error	225 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
71	Runtime error	143 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
72	Runtime error	127 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
73	Runtime error	72 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
74	Runtime error	193 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
75	Runtime error	213 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
76	Correct	117 ms	197968 KB	Output is correct
77	Runtime error	190 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
78	Runtime error	72 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
79	Runtime error	191 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
80	Runtime error	214 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
81	Runtime error	218 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
82	Runtime error	120 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
83	Runtime error	111 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
84	Runtime error	212 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
85	Runtime error	206 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
86	Runtime error	220 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
87	Runtime error	195 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
88	Runtime error	204 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
89	Runtime error	205 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
90	Runtime error	206 ms	197968 KB	Execution killed with signal 11 (could be triggered by violating memory limits)

답안 #20364

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