oj.uz

Submission #66297

# Submission time Handle Problem Language Result Execution time Memory
66297 2018-08-10T07:38:48 Z 정원준(#1889) 초음속철도 (OJUZ11_rail) C++11
0 / 100
 193 ms 10068 KB 
#include <bits/stdc++.h>
#define L long long
#define mod 1000000007


using namespace std;

L ln,n,ans;

struct S{
	L s,e;
}a[200020];

bool operator<(S a,S b){
	return a.e<b.e;
}

L dp[200020][2],ds[200020][2];


int main()
{
	scanf("%lld %lld",&ln,&n);
	L i;
	for(i=1;i<=n;i++)
	{
		scanf("%lld %lld",&a[i].s,&a[i].e);
	}
	sort(a+1,a+n+1);
	dp[0][1]=1;
	ds[0][1]=1;
	a[0].s=a[0].e=1;
	for(i=1;i<=n;i++)
	{
		L S=0,E=i;//Ŀ���DZ� �����ϴ� ��
		while(S<E)
		{
			L mid=(S+E)/2;
			if(a[mid].e>=a[i].s) E=mid;
			else S=mid+1;
		} 
		if(a[i].s==1)
		{
			dp[i][1]=ds[i-1][0]+ds[i-1][1]-ds[S-1][0]-ds[S-1][1];
			dp[i][0]=0;
		}
		else
		{
			dp[i][1]=ds[i-1][1]-ds[S-1][1];
			dp[i][0]=ds[i-1][0]-ds[S-1][0]+1;
		}
		dp[i][1]=(dp[i][1]%mod+mod)%mod;
		dp[i][0]=(dp[i][0]%mod+mod)%mod;
		ds[i][1]=ds[i-1][1]+dp[i][1];
		ds[i][0]=ds[i-1][0]+dp[i][0];
		ds[i][1]=(ds[i][1]%mod+mod)%mod;
		ds[i][0]=(ds[i][0]%mod+mod)%mod;
		//printf("%lld %lld : %lld , %lld %lld\n",a[i].s,a[i].e,S,dp[i][0],dp[i][1]);
	}
	for(i=1;i<=n;i++)
	{
		if(a[i].e==ln)
		{
			ans+=dp[i][1];
			ans%=mod;
		}
	}
	printf("%lld ",ans);
}

Compilation message

rail.cpp: In function 'int main()':
rail.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld",&ln,&n);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
rail.cpp:27:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld",&a[i].s,&a[i].e);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Incorrect 3 ms 484 KB Output isn't correct
4 Incorrect 2 ms 484 KB Output isn't correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 516 KB Output is correct
7 Incorrect 2 ms 644 KB Output isn't correct
8 Incorrect 3 ms 644 KB Output isn't correct
9 Correct 2 ms 644 KB Output is correct
10 Incorrect 2 ms 644 KB Output isn't correct
11 Correct 3 ms 644 KB Output is correct
12 Incorrect 2 ms 644 KB Output isn't correct
13 Correct 2 ms 644 KB Output is correct
14 Correct 3 ms 644 KB Output is correct
15 Incorrect 3 ms 644 KB Output isn't correct
16 Incorrect 3 ms 644 KB Output isn't correct
17 Correct 2 ms 644 KB Output is correct
18 Correct 2 ms 644 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Incorrect 3 ms 484 KB Output isn't correct
4 Incorrect 2 ms 484 KB Output isn't correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 516 KB Output is correct
7 Incorrect 2 ms 644 KB Output isn't correct
8 Incorrect 3 ms 644 KB Output isn't correct
9 Correct 2 ms 644 KB Output is correct
10 Incorrect 2 ms 644 KB Output isn't correct
11 Correct 3 ms 644 KB Output is correct
12 Incorrect 2 ms 644 KB Output isn't correct
13 Correct 2 ms 644 KB Output is correct
14 Correct 3 ms 644 KB Output is correct
15 Incorrect 3 ms 644 KB Output isn't correct
16 Incorrect 3 ms 644 KB Output isn't correct
17 Correct 2 ms 644 KB Output is correct
18 Correct 2 ms 644 KB Output is correct
19 Incorrect 3 ms 644 KB Output isn't correct
20 Incorrect 2 ms 644 KB Output isn't correct
21 Correct 2 ms 644 KB Output is correct
22 Incorrect 3 ms 644 KB Output isn't correct
23 Incorrect 3 ms 644 KB Output isn't correct
24 Incorrect 3 ms 644 KB Output isn't correct
25 Incorrect 2 ms 644 KB Output isn't correct
26 Incorrect 3 ms 644 KB Output isn't correct
27 Correct 2 ms 644 KB Output is correct
28 Correct 2 ms 644 KB Output is correct
29 Incorrect 2 ms 644 KB Output isn't correct
30 Incorrect 3 ms 644 KB Output isn't correct
31 Incorrect 3 ms 644 KB Output isn't correct
32 Incorrect 2 ms 644 KB Output isn't correct
33 Correct 3 ms 644 KB Output is correct
34 Correct 3 ms 644 KB Output is correct
35 Correct 3 ms 644 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 644 KB Output is correct
2 Correct 3 ms 644 KB Output is correct
3 Correct 2 ms 748 KB Output is correct
4 Incorrect 5 ms 876 KB Output isn't correct
5 Incorrect 107 ms 9980 KB Output isn't correct
6 Incorrect 110 ms 9988 KB Output isn't correct
7 Incorrect 108 ms 9988 KB Output isn't correct
8 Incorrect 2 ms 9988 KB Output isn't correct
9 Incorrect 115 ms 9988 KB Output isn't correct
10 Incorrect 118 ms 9988 KB Output isn't correct
11 Incorrect 49 ms 9988 KB Output isn't correct
12 Incorrect 113 ms 10000 KB Output isn't correct
13 Incorrect 120 ms 10000 KB Output isn't correct
14 Incorrect 73 ms 10000 KB Output isn't correct
15 Correct 126 ms 10068 KB Output is correct
16 Incorrect 80 ms 10068 KB Output isn't correct
17 Incorrect 127 ms 10068 KB Output isn't correct
18 Incorrect 114 ms 10068 KB Output isn't correct
19 Incorrect 124 ms 10068 KB Output isn't correct

Subtask #4
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Incorrect 3 ms 484 KB Output isn't correct
4 Incorrect 2 ms 484 KB Output isn't correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 516 KB Output is correct
7 Incorrect 2 ms 644 KB Output isn't correct
8 Incorrect 3 ms 644 KB Output isn't correct
9 Correct 2 ms 644 KB Output is correct
10 Incorrect 2 ms 644 KB Output isn't correct
11 Correct 3 ms 644 KB Output is correct
12 Incorrect 2 ms 644 KB Output isn't correct
13 Correct 2 ms 644 KB Output is correct
14 Correct 3 ms 644 KB Output is correct
15 Incorrect 3 ms 644 KB Output isn't correct
16 Incorrect 3 ms 644 KB Output isn't correct
17 Correct 2 ms 644 KB Output is correct
18 Correct 2 ms 644 KB Output is correct
19 Incorrect 3 ms 644 KB Output isn't correct
20 Incorrect 2 ms 644 KB Output isn't correct
21 Correct 2 ms 644 KB Output is correct
22 Incorrect 3 ms 644 KB Output isn't correct
23 Incorrect 3 ms 644 KB Output isn't correct
24 Incorrect 3 ms 644 KB Output isn't correct
25 Incorrect 2 ms 644 KB Output isn't correct
26 Incorrect 3 ms 644 KB Output isn't correct
27 Correct 2 ms 644 KB Output is correct
28 Correct 2 ms 644 KB Output is correct
29 Incorrect 2 ms 644 KB Output isn't correct
30 Incorrect 3 ms 644 KB Output isn't correct
31 Incorrect 3 ms 644 KB Output isn't correct
32 Incorrect 2 ms 644 KB Output isn't correct
33 Correct 3 ms 644 KB Output is correct
34 Correct 3 ms 644 KB Output is correct
35 Correct 3 ms 644 KB Output is correct
36 Incorrect 5 ms 10068 KB Output isn't correct
37 Incorrect 5 ms 10068 KB Output isn't correct
38 Incorrect 5 ms 10068 KB Output isn't correct
39 Incorrect 4 ms 10068 KB Output isn't correct
40 Correct 6 ms 10068 KB Output is correct
41 Correct 7 ms 10068 KB Output is correct
42 Incorrect 6 ms 10068 KB Output isn't correct
43 Incorrect 2 ms 10068 KB Output isn't correct
44 Incorrect 5 ms 10068 KB Output isn't correct
45 Correct 4 ms 10068 KB Output is correct
46 Incorrect 4 ms 10068 KB Output isn't correct
47 Incorrect 5 ms 10068 KB Output isn't correct
48 Incorrect 6 ms 10068 KB Output isn't correct
49 Incorrect 5 ms 10068 KB Output isn't correct
50 Incorrect 5 ms 10068 KB Output isn't correct
51 Incorrect 4 ms 10068 KB Output isn't correct
52 Incorrect 3 ms 10068 KB Output isn't correct
53 Correct 5 ms 10068 KB Output is correct
54 Incorrect 5 ms 10068 KB Output isn't correct
55 Correct 6 ms 10068 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Incorrect 3 ms 484 KB Output isn't correct
4 Incorrect 2 ms 484 KB Output isn't correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 516 KB Output is correct
7 Incorrect 2 ms 644 KB Output isn't correct
8 Incorrect 3 ms 644 KB Output isn't correct
9 Correct 2 ms 644 KB Output is correct
10 Incorrect 2 ms 644 KB Output isn't correct
11 Correct 3 ms 644 KB Output is correct
12 Incorrect 2 ms 644 KB Output isn't correct
13 Correct 2 ms 644 KB Output is correct
14 Correct 3 ms 644 KB Output is correct
15 Incorrect 3 ms 644 KB Output isn't correct
16 Incorrect 3 ms 644 KB Output isn't correct
17 Correct 2 ms 644 KB Output is correct
18 Correct 2 ms 644 KB Output is correct
19 Incorrect 3 ms 644 KB Output isn't correct
20 Incorrect 2 ms 644 KB Output isn't correct
21 Correct 2 ms 644 KB Output is correct
22 Incorrect 3 ms 644 KB Output isn't correct
23 Incorrect 3 ms 644 KB Output isn't correct
24 Incorrect 3 ms 644 KB Output isn't correct
25 Incorrect 2 ms 644 KB Output isn't correct
26 Incorrect 3 ms 644 KB Output isn't correct
27 Correct 2 ms 644 KB Output is correct
28 Correct 2 ms 644 KB Output is correct
29 Incorrect 2 ms 644 KB Output isn't correct
30 Incorrect 3 ms 644 KB Output isn't correct
31 Incorrect 3 ms 644 KB Output isn't correct
32 Incorrect 2 ms 644 KB Output isn't correct
33 Correct 3 ms 644 KB Output is correct
34 Correct 3 ms 644 KB Output is correct
35 Correct 3 ms 644 KB Output is correct
36 Correct 2 ms 644 KB Output is correct
37 Correct 3 ms 644 KB Output is correct
38 Correct 2 ms 748 KB Output is correct
39 Incorrect 5 ms 876 KB Output isn't correct
40 Incorrect 107 ms 9980 KB Output isn't correct
41 Incorrect 110 ms 9988 KB Output isn't correct
42 Incorrect 108 ms 9988 KB Output isn't correct
43 Incorrect 2 ms 9988 KB Output isn't correct
44 Incorrect 115 ms 9988 KB Output isn't correct
45 Incorrect 118 ms 9988 KB Output isn't correct
46 Incorrect 49 ms 9988 KB Output isn't correct
47 Incorrect 113 ms 10000 KB Output isn't correct
48 Incorrect 120 ms 10000 KB Output isn't correct
49 Incorrect 73 ms 10000 KB Output isn't correct
50 Correct 126 ms 10068 KB Output is correct
51 Incorrect 80 ms 10068 KB Output isn't correct
52 Incorrect 127 ms 10068 KB Output isn't correct
53 Incorrect 114 ms 10068 KB Output isn't correct
54 Incorrect 124 ms 10068 KB Output isn't correct
55 Incorrect 5 ms 10068 KB Output isn't correct
56 Incorrect 5 ms 10068 KB Output isn't correct
57 Incorrect 5 ms 10068 KB Output isn't correct
58 Incorrect 4 ms 10068 KB Output isn't correct
59 Correct 6 ms 10068 KB Output is correct
60 Correct 7 ms 10068 KB Output is correct
61 Incorrect 6 ms 10068 KB Output isn't correct
62 Incorrect 2 ms 10068 KB Output isn't correct
63 Incorrect 5 ms 10068 KB Output isn't correct
64 Correct 4 ms 10068 KB Output is correct
65 Incorrect 4 ms 10068 KB Output isn't correct
66 Incorrect 5 ms 10068 KB Output isn't correct
67 Incorrect 6 ms 10068 KB Output isn't correct
68 Incorrect 5 ms 10068 KB Output isn't correct
69 Incorrect 5 ms 10068 KB Output isn't correct
70 Incorrect 4 ms 10068 KB Output isn't correct
71 Incorrect 3 ms 10068 KB Output isn't correct
72 Correct 5 ms 10068 KB Output is correct
73 Incorrect 5 ms 10068 KB Output isn't correct
74 Correct 6 ms 10068 KB Output is correct
75 Incorrect 161 ms 10068 KB Output isn't correct
76 Incorrect 96 ms 10068 KB Output isn't correct
77 Incorrect 137 ms 10068 KB Output isn't correct
78 Incorrect 60 ms 10068 KB Output isn't correct
79 Correct 139 ms 10068 KB Output is correct
80 Incorrect 158 ms 10068 KB Output isn't correct
81 Incorrect 5 ms 10068 KB Output isn't correct
82 Incorrect 141 ms 10068 KB Output isn't correct
83 Correct 74 ms 10068 KB Output is correct
84 Incorrect 148 ms 10068 KB Output isn't correct
85 Incorrect 158 ms 10068 KB Output isn't correct
86 Incorrect 140 ms 10068 KB Output isn't correct
87 Incorrect 143 ms 10068 KB Output isn't correct
88 Incorrect 101 ms 10068 KB Output isn't correct
89 Incorrect 167 ms 10068 KB Output isn't correct
90 Incorrect 166 ms 10068 KB Output isn't correct
91 Incorrect 179 ms 10068 KB Output isn't correct
92 Correct 148 ms 10068 KB Output is correct
93 Incorrect 155 ms 10068 KB Output isn't correct
94 Incorrect 193 ms 10068 KB Output isn't correct
95 Incorrect 167 ms 10068 KB Output isn't correct