oj.uz

Submission #20364

# Submission time Handle Problem Language Result Execution time Memory
20364 2017-02-07T08:32:25 Z 초음속철도 (OJUZ11_rail) C++
45 / 100
 247 ms 197968 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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)