답안 #66241

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
66241 2018-08-10T05:30:05 Z 윤교준(#1888) 초음속철도 (OJUZ11_rail) C++11
45 / 100
3000 ms 8048 KB
#include <bits/stdc++.h>
#define pb push_back
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
#define sorv(V) sort(allv(V))
#define revv(V) reverse(allv(V))
#define univ(V) (V).erase(unique(allv(V)),(V).end())
#define clv(V) (V).clear()
#define upmin(a,b) (a)=min((a),(b))
#define upmax(a,b) (a)=max((a),(b))
#define rb(x) ((x)&(-(x)))
#define INF (0x3f3f3f3f)
#define INFLL (0x3f3f3f3f3f3f3f3fll)
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;

const int MOD = 1000000007;
const int MAXN = 200005;

inline void add(int &a, int b) { a += b; if(MOD <= a) a -= MOD; }

int dp[MAXN];
int A[MAXN], B[MAXN], O[MAXN];

int N, M;

int main() {
	ios::sync_with_stdio(false);

	cin >> M >> N;
	for(int i = 1; i <= N; i++) cin >> A[i] >> B[i];

	{
		vector<int> V;
		V.eb(1); V.eb(M);
		for(int i = 1; i <= N; i++) {
			V.eb(A[i]);
			V.eb(B[i]);
		}
		sorv(V); univ(V);
		M = sz(V);
		for(int i = 1; i <= N; i++) {
			A[i] = int(lower_bound(allv(V), A[i]) - V.begin()) + 1;
			B[i] = int(lower_bound(allv(V), B[i]) - V.begin()) + 1;
		}
	}
	iota(O, O+N+1, 0);
	sort(O+1, O+N+1, [&](int a, int b) { return B[a] < B[b]; });

	dp[1] = 1;
	for(int oi = 1, i; oi <= N; oi++) {
		i = O[oi];
		int s = A[i], e = B[i], ret = 0;
		for(int i = s; i < e; i++) add(ret, dp[i]);
		for(int i = 1; i < s; i++) add(dp[i], dp[i]);
		for(int i = e; i <= M; i++) add(dp[i], dp[i]);
		add(dp[e], ret);
	}
	
	cout << dp[M] << endl;
	return 0;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 416 KB Output is correct
4 Correct 3 ms 420 KB Output is correct
5 Correct 2 ms 420 KB Output is correct
6 Correct 3 ms 420 KB Output is correct
7 Correct 3 ms 496 KB Output is correct
8 Correct 3 ms 496 KB Output is correct
9 Correct 2 ms 496 KB Output is correct
10 Correct 2 ms 544 KB Output is correct
11 Correct 2 ms 544 KB Output is correct
12 Correct 2 ms 544 KB Output is correct
13 Correct 2 ms 544 KB Output is correct
14 Correct 2 ms 544 KB Output is correct
15 Correct 3 ms 544 KB Output is correct
16 Correct 2 ms 620 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 620 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 416 KB Output is correct
4 Correct 3 ms 420 KB Output is correct
5 Correct 2 ms 420 KB Output is correct
6 Correct 3 ms 420 KB Output is correct
7 Correct 3 ms 496 KB Output is correct
8 Correct 3 ms 496 KB Output is correct
9 Correct 2 ms 496 KB Output is correct
10 Correct 2 ms 544 KB Output is correct
11 Correct 2 ms 544 KB Output is correct
12 Correct 2 ms 544 KB Output is correct
13 Correct 2 ms 544 KB Output is correct
14 Correct 2 ms 544 KB Output is correct
15 Correct 3 ms 544 KB Output is correct
16 Correct 2 ms 620 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 2 ms 620 KB Output is correct
22 Correct 3 ms 620 KB Output is correct
23 Correct 3 ms 736 KB Output is correct
24 Correct 3 ms 736 KB Output is correct
25 Correct 2 ms 736 KB Output is correct
26 Correct 2 ms 736 KB Output is correct
27 Correct 3 ms 736 KB Output is correct
28 Correct 3 ms 736 KB Output is correct
29 Correct 3 ms 736 KB Output is correct
30 Correct 3 ms 736 KB Output is correct
31 Correct 3 ms 736 KB Output is correct
32 Correct 2 ms 736 KB Output is correct
33 Correct 2 ms 736 KB Output is correct
34 Correct 3 ms 736 KB Output is correct
35 Correct 4 ms 736 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 736 KB Output is correct
2 Correct 2 ms 736 KB Output is correct
3 Correct 3 ms 736 KB Output is correct
4 Correct 15 ms 748 KB Output is correct
5 Execution timed out 3047 ms 4448 KB Time limit exceeded
6 Runtime error 250 ms 7216 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Runtime error 198 ms 7716 KB Execution killed with signal 11 (could be triggered by violating memory limits)
8 Correct 3 ms 7716 KB Output is correct
9 Runtime error 187 ms 7716 KB Execution killed with signal 11 (could be triggered by violating memory limits)
10 Runtime error 228 ms 7788 KB Execution killed with signal 11 (could be triggered by violating memory limits)
11 Execution timed out 3045 ms 7788 KB Time limit exceeded
12 Runtime error 240 ms 7820 KB Execution killed with signal 11 (could be triggered by violating memory limits)
13 Runtime error 199 ms 7992 KB Execution killed with signal 11 (could be triggered by violating memory limits)
14 Correct 79 ms 8048 KB Output is correct
15 Execution timed out 3066 ms 8048 KB Time limit exceeded
16 Correct 95 ms 8048 KB Output is correct
17 Runtime error 206 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Runtime error 248 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
19 Runtime error 204 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 416 KB Output is correct
4 Correct 3 ms 420 KB Output is correct
5 Correct 2 ms 420 KB Output is correct
6 Correct 3 ms 420 KB Output is correct
7 Correct 3 ms 496 KB Output is correct
8 Correct 3 ms 496 KB Output is correct
9 Correct 2 ms 496 KB Output is correct
10 Correct 2 ms 544 KB Output is correct
11 Correct 2 ms 544 KB Output is correct
12 Correct 2 ms 544 KB Output is correct
13 Correct 2 ms 544 KB Output is correct
14 Correct 2 ms 544 KB Output is correct
15 Correct 3 ms 544 KB Output is correct
16 Correct 2 ms 620 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 2 ms 620 KB Output is correct
22 Correct 3 ms 620 KB Output is correct
23 Correct 3 ms 736 KB Output is correct
24 Correct 3 ms 736 KB Output is correct
25 Correct 2 ms 736 KB Output is correct
26 Correct 2 ms 736 KB Output is correct
27 Correct 3 ms 736 KB Output is correct
28 Correct 3 ms 736 KB Output is correct
29 Correct 3 ms 736 KB Output is correct
30 Correct 3 ms 736 KB Output is correct
31 Correct 3 ms 736 KB Output is correct
32 Correct 2 ms 736 KB Output is correct
33 Correct 2 ms 736 KB Output is correct
34 Correct 3 ms 736 KB Output is correct
35 Correct 4 ms 736 KB Output is correct
36 Correct 69 ms 8048 KB Output is correct
37 Correct 50 ms 8048 KB Output is correct
38 Correct 21 ms 8048 KB Output is correct
39 Correct 4 ms 8048 KB Output is correct
40 Correct 36 ms 8048 KB Output is correct
41 Correct 76 ms 8048 KB Output is correct
42 Correct 67 ms 8048 KB Output is correct
43 Correct 2 ms 8048 KB Output is correct
44 Correct 48 ms 8048 KB Output is correct
45 Correct 4 ms 8048 KB Output is correct
46 Correct 39 ms 8048 KB Output is correct
47 Correct 52 ms 8048 KB Output is correct
48 Correct 36 ms 8048 KB Output is correct
49 Correct 5 ms 8048 KB Output is correct
50 Correct 5 ms 8048 KB Output is correct
51 Correct 5 ms 8048 KB Output is correct
52 Correct 6 ms 8048 KB Output is correct
53 Correct 72 ms 8048 KB Output is correct
54 Correct 17 ms 8048 KB Output is correct
55 Correct 72 ms 8048 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 416 KB Output is correct
4 Correct 3 ms 420 KB Output is correct
5 Correct 2 ms 420 KB Output is correct
6 Correct 3 ms 420 KB Output is correct
7 Correct 3 ms 496 KB Output is correct
8 Correct 3 ms 496 KB Output is correct
9 Correct 2 ms 496 KB Output is correct
10 Correct 2 ms 544 KB Output is correct
11 Correct 2 ms 544 KB Output is correct
12 Correct 2 ms 544 KB Output is correct
13 Correct 2 ms 544 KB Output is correct
14 Correct 2 ms 544 KB Output is correct
15 Correct 3 ms 544 KB Output is correct
16 Correct 2 ms 620 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 2 ms 620 KB Output is correct
22 Correct 3 ms 620 KB Output is correct
23 Correct 3 ms 736 KB Output is correct
24 Correct 3 ms 736 KB Output is correct
25 Correct 2 ms 736 KB Output is correct
26 Correct 2 ms 736 KB Output is correct
27 Correct 3 ms 736 KB Output is correct
28 Correct 3 ms 736 KB Output is correct
29 Correct 3 ms 736 KB Output is correct
30 Correct 3 ms 736 KB Output is correct
31 Correct 3 ms 736 KB Output is correct
32 Correct 2 ms 736 KB Output is correct
33 Correct 2 ms 736 KB Output is correct
34 Correct 3 ms 736 KB Output is correct
35 Correct 4 ms 736 KB Output is correct
36 Correct 2 ms 736 KB Output is correct
37 Correct 2 ms 736 KB Output is correct
38 Correct 3 ms 736 KB Output is correct
39 Correct 15 ms 748 KB Output is correct
40 Execution timed out 3047 ms 4448 KB Time limit exceeded
41 Runtime error 250 ms 7216 KB Execution killed with signal 11 (could be triggered by violating memory limits)
42 Runtime error 198 ms 7716 KB Execution killed with signal 11 (could be triggered by violating memory limits)
43 Correct 3 ms 7716 KB Output is correct
44 Runtime error 187 ms 7716 KB Execution killed with signal 11 (could be triggered by violating memory limits)
45 Runtime error 228 ms 7788 KB Execution killed with signal 11 (could be triggered by violating memory limits)
46 Execution timed out 3045 ms 7788 KB Time limit exceeded
47 Runtime error 240 ms 7820 KB Execution killed with signal 11 (could be triggered by violating memory limits)
48 Runtime error 199 ms 7992 KB Execution killed with signal 11 (could be triggered by violating memory limits)
49 Correct 79 ms 8048 KB Output is correct
50 Execution timed out 3066 ms 8048 KB Time limit exceeded
51 Correct 95 ms 8048 KB Output is correct
52 Runtime error 206 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
53 Runtime error 248 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
54 Runtime error 204 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
55 Correct 69 ms 8048 KB Output is correct
56 Correct 50 ms 8048 KB Output is correct
57 Correct 21 ms 8048 KB Output is correct
58 Correct 4 ms 8048 KB Output is correct
59 Correct 36 ms 8048 KB Output is correct
60 Correct 76 ms 8048 KB Output is correct
61 Correct 67 ms 8048 KB Output is correct
62 Correct 2 ms 8048 KB Output is correct
63 Correct 48 ms 8048 KB Output is correct
64 Correct 4 ms 8048 KB Output is correct
65 Correct 39 ms 8048 KB Output is correct
66 Correct 52 ms 8048 KB Output is correct
67 Correct 36 ms 8048 KB Output is correct
68 Correct 5 ms 8048 KB Output is correct
69 Correct 5 ms 8048 KB Output is correct
70 Correct 5 ms 8048 KB Output is correct
71 Correct 6 ms 8048 KB Output is correct
72 Correct 72 ms 8048 KB Output is correct
73 Correct 17 ms 8048 KB Output is correct
74 Correct 72 ms 8048 KB Output is correct
75 Runtime error 208 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
76 Runtime error 136 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
77 Correct 1002 ms 8048 KB Output is correct
78 Correct 72 ms 8048 KB Output is correct
79 Execution timed out 3049 ms 8048 KB Time limit exceeded
80 Runtime error 226 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
81 Correct 33 ms 8048 KB Output is correct
82 Runtime error 206 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
83 Correct 69 ms 8048 KB Output is correct
84 Runtime error 206 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
85 Execution timed out 3053 ms 8048 KB Time limit exceeded
86 Execution timed out 3017 ms 8048 KB Time limit exceeded
87 Correct 125 ms 8048 KB Output is correct
88 Correct 103 ms 8048 KB Output is correct
89 Runtime error 242 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
90 Runtime error 204 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
91 Runtime error 211 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
92 Runtime error 204 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
93 Execution timed out 3059 ms 8048 KB Time limit exceeded
94 Runtime error 205 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
95 Runtime error 210 ms 8048 KB Execution killed with signal 11 (could be triggered by violating memory limits)