oj.uz

Submission #66298

# Submission time Handle Problem Language Result Execution time Memory
66298 2018-08-10T07:40:03 Z 정원준(#1889) 초음속철도 (OJUZ11_rail) C++11
0 / 100
 174 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;
	dp[0][0]=1;
	ds[0][0]=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];
		}
		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 Incorrect 2 ms 376 KB Output isn't correct
2 Incorrect 2 ms 488 KB Output isn't correct
3 Incorrect 2 ms 488 KB Output isn't correct
4 Incorrect 3 ms 548 KB Output isn't correct
5 Correct 2 ms 548 KB Output is correct
6 Incorrect 3 ms 548 KB Output isn't correct
7 Incorrect 2 ms 560 KB Output isn't correct
8 Incorrect 2 ms 608 KB Output isn't correct
9 Correct 2 ms 612 KB Output is correct
10 Incorrect 2 ms 612 KB Output isn't correct
11 Incorrect 2 ms 612 KB Output isn't correct
12 Incorrect 2 ms 612 KB Output isn't correct
13 Incorrect 2 ms 680 KB Output isn't correct
14 Incorrect 3 ms 680 KB Output isn't correct
15 Incorrect 3 ms 680 KB Output isn't correct
16 Incorrect 3 ms 680 KB Output isn't correct
17 Correct 3 ms 680 KB Output is correct
18 Correct 3 ms 680 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Incorrect 2 ms 488 KB Output isn't correct
3 Incorrect 2 ms 488 KB Output isn't correct
4 Incorrect 3 ms 548 KB Output isn't correct
5 Correct 2 ms 548 KB Output is correct
6 Incorrect 3 ms 548 KB Output isn't correct
7 Incorrect 2 ms 560 KB Output isn't correct
8 Incorrect 2 ms 608 KB Output isn't correct
9 Correct 2 ms 612 KB Output is correct
10 Incorrect 2 ms 612 KB Output isn't correct
11 Incorrect 2 ms 612 KB Output isn't correct
12 Incorrect 2 ms 612 KB Output isn't correct
13 Incorrect 2 ms 680 KB Output isn't correct
14 Incorrect 3 ms 680 KB Output isn't correct
15 Incorrect 3 ms 680 KB Output isn't correct
16 Incorrect 3 ms 680 KB Output isn't correct
17 Correct 3 ms 680 KB Output is correct
18 Correct 3 ms 680 KB Output is correct
19 Incorrect 2 ms 680 KB Output isn't correct
20 Incorrect 2 ms 680 KB Output isn't correct
21 Incorrect 2 ms 680 KB Output isn't correct
22 Incorrect 3 ms 680 KB Output isn't correct
23 Incorrect 2 ms 680 KB Output isn't correct
24 Incorrect 3 ms 680 KB Output isn't correct
25 Incorrect 2 ms 680 KB Output isn't correct
26 Incorrect 2 ms 680 KB Output isn't correct
27 Correct 3 ms 680 KB Output is correct
28 Incorrect 2 ms 680 KB Output isn't correct
29 Incorrect 2 ms 680 KB Output isn't correct
30 Incorrect 2 ms 680 KB Output isn't correct
31 Incorrect 2 ms 680 KB Output isn't correct
32 Incorrect 2 ms 680 KB Output isn't correct
33 Correct 2 ms 680 KB Output is correct
34 Incorrect 2 ms 680 KB Output isn't correct
35 Correct 2 ms 680 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 680 KB Output isn't correct
2 Correct 3 ms 744 KB Output is correct
3 Correct 3 ms 744 KB Output is correct
4 Incorrect 4 ms 860 KB Output isn't correct
5 Incorrect 92 ms 9916 KB Output isn't correct
6 Incorrect 115 ms 9916 KB Output isn't correct
7 Incorrect 99 ms 9964 KB Output isn't correct
8 Incorrect 2 ms 9964 KB Output isn't correct
9 Incorrect 116 ms 9964 KB Output isn't correct
10 Incorrect 131 ms 9964 KB Output isn't correct
11 Incorrect 59 ms 9964 KB Output isn't correct
12 Incorrect 112 ms 9964 KB Output isn't correct
13 Incorrect 120 ms 9964 KB Output isn't correct
14 Incorrect 98 ms 9964 KB Output isn't correct
15 Incorrect 114 ms 9964 KB Output isn't correct
16 Incorrect 123 ms 9984 KB Output isn't correct
17 Incorrect 117 ms 9984 KB Output isn't correct
18 Incorrect 133 ms 9984 KB Output isn't correct
19 Incorrect 122 ms 9984 KB Output isn't correct

Subtask #4
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Incorrect 2 ms 488 KB Output isn't correct
3 Incorrect 2 ms 488 KB Output isn't correct
4 Incorrect 3 ms 548 KB Output isn't correct
5 Correct 2 ms 548 KB Output is correct
6 Incorrect 3 ms 548 KB Output isn't correct
7 Incorrect 2 ms 560 KB Output isn't correct
8 Incorrect 2 ms 608 KB Output isn't correct
9 Correct 2 ms 612 KB Output is correct
10 Incorrect 2 ms 612 KB Output isn't correct
11 Incorrect 2 ms 612 KB Output isn't correct
12 Incorrect 2 ms 612 KB Output isn't correct
13 Incorrect 2 ms 680 KB Output isn't correct
14 Incorrect 3 ms 680 KB Output isn't correct
15 Incorrect 3 ms 680 KB Output isn't correct
16 Incorrect 3 ms 680 KB Output isn't correct
17 Correct 3 ms 680 KB Output is correct
18 Correct 3 ms 680 KB Output is correct
19 Incorrect 2 ms 680 KB Output isn't correct
20 Incorrect 2 ms 680 KB Output isn't correct
21 Incorrect 2 ms 680 KB Output isn't correct
22 Incorrect 3 ms 680 KB Output isn't correct
23 Incorrect 2 ms 680 KB Output isn't correct
24 Incorrect 3 ms 680 KB Output isn't correct
25 Incorrect 2 ms 680 KB Output isn't correct
26 Incorrect 2 ms 680 KB Output isn't correct
27 Correct 3 ms 680 KB Output is correct
28 Incorrect 2 ms 680 KB Output isn't correct
29 Incorrect 2 ms 680 KB Output isn't correct
30 Incorrect 2 ms 680 KB Output isn't correct
31 Incorrect 2 ms 680 KB Output isn't correct
32 Incorrect 2 ms 680 KB Output isn't correct
33 Correct 2 ms 680 KB Output is correct
34 Incorrect 2 ms 680 KB Output isn't correct
35 Correct 2 ms 680 KB Output is correct
36 Incorrect 5 ms 9984 KB Output isn't correct
37 Incorrect 5 ms 9984 KB Output isn't correct
38 Incorrect 4 ms 9984 KB Output isn't correct
39 Incorrect 4 ms 9984 KB Output isn't correct
40 Incorrect 5 ms 9984 KB Output isn't correct
41 Correct 5 ms 9984 KB Output is correct
42 Incorrect 5 ms 9984 KB Output isn't correct
43 Incorrect 3 ms 9984 KB Output isn't correct
44 Incorrect 5 ms 9984 KB Output isn't correct
45 Incorrect 4 ms 9984 KB Output isn't correct
46 Incorrect 6 ms 9984 KB Output isn't correct
47 Incorrect 7 ms 9984 KB Output isn't correct
48 Incorrect 6 ms 9984 KB Output isn't correct
49 Incorrect 5 ms 9984 KB Output isn't correct
50 Incorrect 4 ms 9984 KB Output isn't correct
51 Incorrect 4 ms 9984 KB Output isn't correct
52 Incorrect 3 ms 9984 KB Output isn't correct
53 Correct 6 ms 9984 KB Output is correct
54 Incorrect 4 ms 9984 KB Output isn't correct
55 Correct 6 ms 9984 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Incorrect 2 ms 488 KB Output isn't correct
3 Incorrect 2 ms 488 KB Output isn't correct
4 Incorrect 3 ms 548 KB Output isn't correct
5 Correct 2 ms 548 KB Output is correct
6 Incorrect 3 ms 548 KB Output isn't correct
7 Incorrect 2 ms 560 KB Output isn't correct
8 Incorrect 2 ms 608 KB Output isn't correct
9 Correct 2 ms 612 KB Output is correct
10 Incorrect 2 ms 612 KB Output isn't correct
11 Incorrect 2 ms 612 KB Output isn't correct
12 Incorrect 2 ms 612 KB Output isn't correct
13 Incorrect 2 ms 680 KB Output isn't correct
14 Incorrect 3 ms 680 KB Output isn't correct
15 Incorrect 3 ms 680 KB Output isn't correct
16 Incorrect 3 ms 680 KB Output isn't correct
17 Correct 3 ms 680 KB Output is correct
18 Correct 3 ms 680 KB Output is correct
19 Incorrect 2 ms 680 KB Output isn't correct
20 Incorrect 2 ms 680 KB Output isn't correct
21 Incorrect 2 ms 680 KB Output isn't correct
22 Incorrect 3 ms 680 KB Output isn't correct
23 Incorrect 2 ms 680 KB Output isn't correct
24 Incorrect 3 ms 680 KB Output isn't correct
25 Incorrect 2 ms 680 KB Output isn't correct
26 Incorrect 2 ms 680 KB Output isn't correct
27 Correct 3 ms 680 KB Output is correct
28 Incorrect 2 ms 680 KB Output isn't correct
29 Incorrect 2 ms 680 KB Output isn't correct
30 Incorrect 2 ms 680 KB Output isn't correct
31 Incorrect 2 ms 680 KB Output isn't correct
32 Incorrect 2 ms 680 KB Output isn't correct
33 Correct 2 ms 680 KB Output is correct
34 Incorrect 2 ms 680 KB Output isn't correct
35 Correct 2 ms 680 KB Output is correct
36 Incorrect 2 ms 680 KB Output isn't correct
37 Correct 3 ms 744 KB Output is correct
38 Correct 3 ms 744 KB Output is correct
39 Incorrect 4 ms 860 KB Output isn't correct
40 Incorrect 92 ms 9916 KB Output isn't correct
41 Incorrect 115 ms 9916 KB Output isn't correct
42 Incorrect 99 ms 9964 KB Output isn't correct
43 Incorrect 2 ms 9964 KB Output isn't correct
44 Incorrect 116 ms 9964 KB Output isn't correct
45 Incorrect 131 ms 9964 KB Output isn't correct
46 Incorrect 59 ms 9964 KB Output isn't correct
47 Incorrect 112 ms 9964 KB Output isn't correct
48 Incorrect 120 ms 9964 KB Output isn't correct
49 Incorrect 98 ms 9964 KB Output isn't correct
50 Incorrect 114 ms 9964 KB Output isn't correct
51 Incorrect 123 ms 9984 KB Output isn't correct
52 Incorrect 117 ms 9984 KB Output isn't correct
53 Incorrect 133 ms 9984 KB Output isn't correct
54 Incorrect 122 ms 9984 KB Output isn't correct
55 Incorrect 5 ms 9984 KB Output isn't correct
56 Incorrect 5 ms 9984 KB Output isn't correct
57 Incorrect 4 ms 9984 KB Output isn't correct
58 Incorrect 4 ms 9984 KB Output isn't correct
59 Incorrect 5 ms 9984 KB Output isn't correct
60 Correct 5 ms 9984 KB Output is correct
61 Incorrect 5 ms 9984 KB Output isn't correct
62 Incorrect 3 ms 9984 KB Output isn't correct
63 Incorrect 5 ms 9984 KB Output isn't correct
64 Incorrect 4 ms 9984 KB Output isn't correct
65 Incorrect 6 ms 9984 KB Output isn't correct
66 Incorrect 7 ms 9984 KB Output isn't correct
67 Incorrect 6 ms 9984 KB Output isn't correct
68 Incorrect 5 ms 9984 KB Output isn't correct
69 Incorrect 4 ms 9984 KB Output isn't correct
70 Incorrect 4 ms 9984 KB Output isn't correct
71 Incorrect 3 ms 9984 KB Output isn't correct
72 Correct 6 ms 9984 KB Output is correct
73 Incorrect 4 ms 9984 KB Output isn't correct
74 Correct 6 ms 9984 KB Output is correct
75 Incorrect 174 ms 9984 KB Output isn't correct
76 Incorrect 105 ms 9984 KB Output isn't correct
77 Incorrect 139 ms 9984 KB Output isn't correct
78 Incorrect 113 ms 10028 KB Output isn't correct
79 Correct 144 ms 10028 KB Output is correct
80 Incorrect 169 ms 10028 KB Output isn't correct
81 Incorrect 6 ms 10028 KB Output isn't correct
82 Incorrect 146 ms 10028 KB Output isn't correct
83 Incorrect 83 ms 10028 KB Output isn't correct
84 Incorrect 136 ms 10028 KB Output isn't correct
85 Incorrect 144 ms 10068 KB Output isn't correct
86 Incorrect 140 ms 10068 KB Output isn't correct
87 Incorrect 93 ms 10068 KB Output isn't correct
88 Incorrect 91 ms 10068 KB Output isn't correct
89 Incorrect 160 ms 10068 KB Output isn't correct
90 Incorrect 165 ms 10068 KB Output isn't correct
91 Incorrect 153 ms 10068 KB Output isn't correct
92 Correct 131 ms 10068 KB Output is correct
93 Incorrect 158 ms 10068 KB Output isn't correct
94 Incorrect 162 ms 10068 KB Output isn't correct
95 Incorrect 155 ms 10068 KB Output isn't correct