답안 #20543 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
20543	2017-02-12T09:15:05 Z	CodingAmolang(#71, sys7961)	초음속철도 (OJUZ11_rail)	C++11	45 / 100	3000 ms	22588 KB

rail

#include<stdio.h>
#include<vector>
#include<algorithm>1
using std::vector;

const long long MOD = 1000000007;

struct indexed_tree {
	vector<long long> tree;
	int k = 1;
	indexed_tree(int n) {
		while (k <= n)k *= 2;
		tree.resize(k * 3, 0);
	}
	void update(int idx, int a) {
		tree[k + idx] += a;
		tree[k + idx] %= MOD;
		idx = (k + idx) / 2;
		while (idx) {
			tree[idx] = (tree[idx * 2] + tree[idx * 2 + 1])%MOD;
			idx /= 2;
		}
	}
	long long getSum(int l, int r) {
		l += k;
		r += k;
		long long ret = 0;
		while (l <= r) {
			if (l % 2 == 1)ret += tree[l];
			if (r % 2 == 0)ret += tree[r];
			ret %= MOD;
			l = (l + 1) / 2;
			r = (r - 1) / 2;
		}
		return ret;
	}
};
using std::pair;
int main() {
	int n, m;
	scanf("%d%d", &n, &m);
	vector<long long> X = { 1,n };
	vector<pair<long long, long long>> seg;
	for (int i = 0; i < m; i++) {
		long long s, e;
		scanf("%lld%lld", &s, &e);
		seg.push_back({ s,e });
		X.push_back(s);
		X.push_back(e);
	}
	std::sort(seg.begin(), seg.end());
	std::sort(X.begin(), X.end());
	X.erase(std::unique(X.begin(), X.end()), X.end());
	indexed_tree tree(X.size());
	tree.update(0, 1);
	for (auto segment : seg) {
		long long s = std::lower_bound(X.begin(),X.end(),segment.first)-X.begin();
		long long e = std::lower_bound(X.begin(),X.end(),segment.second)-X.begin();
		tree.update(e, tree.getSum(s, e));
		for (int i = e + 1; i < X.size(); i++) {
			tree.update(i, tree.getSum(i, i));
		}
	}
	printf("%lld", tree.getSum(X.size() - 1, X.size() - 1));
}

Compilation message

rail.cpp:3:20: warning: extra tokens at end of #include directive
 #include<algorithm>1
                    ^
rail.cpp: In function 'int main()':
rail.cpp:60:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = e + 1; i < X.size(); i++) {
                         ^
rail.cpp:41:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
                       ^
rail.cpp:46:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld", &s, &e);
                            ^

Subtask #1
10.0 / 10.0

#	결과	메모리	Grader output
1	Correct	1936 KB	Output is correct
2	Correct	1936 KB	Output is correct
3	Correct	1936 KB	Output is correct
4	Correct	1936 KB	Output is correct
5	Correct	1936 KB	Output is correct
6	Correct	1936 KB	Output is correct
7	Correct	1936 KB	Output is correct
8	Correct	1936 KB	Output is correct
9	Correct	1936 KB	Output is correct
10	Correct	1936 KB	Output is correct
11	Correct	1936 KB	Output is correct
12	Correct	1936 KB	Output is correct
13	Correct	1936 KB	Output is correct
14	Correct	1936 KB	Output is correct
15	Correct	1936 KB	Output is correct
16	Correct	1936 KB	Output is correct
17	Correct	1936 KB	Output is correct
18	Correct	1936 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	메모리	Grader output
1	Correct	1936 KB	Output is correct
2	Correct	1936 KB	Output is correct
3	Correct	1936 KB	Output is correct
4	Correct	1936 KB	Output is correct
5	Correct	1936 KB	Output is correct
6	Correct	1936 KB	Output is correct
7	Correct	1936 KB	Output is correct
8	Correct	1936 KB	Output is correct
9	Correct	1936 KB	Output is correct
10	Correct	1936 KB	Output is correct
11	Correct	1936 KB	Output is correct
12	Correct	1936 KB	Output is correct
13	Correct	1936 KB	Output is correct
14	Correct	1936 KB	Output is correct
15	Correct	1936 KB	Output is correct
16	Correct	1936 KB	Output is correct
17	Correct	1936 KB	Output is correct
18	Correct	1936 KB	Output is correct
19	Correct	1936 KB	Output is correct
20	Correct	1936 KB	Output is correct
21	Correct	1936 KB	Output is correct
22	Correct	1936 KB	Output is correct
23	Correct	1936 KB	Output is correct
24	Correct	1936 KB	Output is correct
25	Correct	1936 KB	Output is correct
26	Correct	1936 KB	Output is correct
27	Correct	1936 KB	Output is correct
28	Correct	1936 KB	Output is correct
29	Correct	1936 KB	Output is correct
30	Correct	1936 KB	Output is correct
31	Correct	1936 KB	Output is correct
32	Correct	1936 KB	Output is correct
33	Correct	1936 KB	Output is correct
34	Correct	1936 KB	Output is correct
35	Correct	1936 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1936 KB	Output is correct
2	Correct	0 ms	1936 KB	Output is correct
3	Correct	0 ms	1936 KB	Output is correct
4	Correct	179 ms	2228 KB	Output is correct
5	Execution timed out	3000 ms	12348 KB	Execution timed out
6	Execution timed out	3000 ms	22588 KB	Execution timed out
7	Execution timed out	3000 ms	22588 KB	Execution timed out
8	Correct	0 ms	1936 KB	Output is correct
9	Execution timed out	3000 ms	22588 KB	Execution timed out
10	Execution timed out	3000 ms	22588 KB	Execution timed out
11	Execution timed out	3000 ms	7740 KB	Execution timed out
12	Execution timed out	3000 ms	22588 KB	Execution timed out
13	Execution timed out	3000 ms	22588 KB	Execution timed out
14	Correct	79 ms	12348 KB	Output is correct
15	Execution timed out	3000 ms	16444 KB	Execution timed out
16	Correct	83 ms	12348 KB	Output is correct
17	Execution timed out	3000 ms	22588 KB	Execution timed out
18	Execution timed out	3000 ms	22588 KB	Execution timed out
19	Execution timed out	3000 ms	22588 KB	Execution timed out

Subtask #4
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1936 KB	Output is correct
2	Correct	0 ms	1936 KB	Output is correct
3	Correct	0 ms	1936 KB	Output is correct
4	Correct	0 ms	1936 KB	Output is correct
5	Correct	0 ms	1936 KB	Output is correct
6	Correct	0 ms	1936 KB	Output is correct
7	Correct	0 ms	1936 KB	Output is correct
8	Correct	0 ms	1936 KB	Output is correct
9	Correct	0 ms	1936 KB	Output is correct
10	Correct	0 ms	1936 KB	Output is correct
11	Correct	0 ms	1936 KB	Output is correct
12	Correct	0 ms	1936 KB	Output is correct
13	Correct	0 ms	1936 KB	Output is correct
14	Correct	0 ms	1936 KB	Output is correct
15	Correct	0 ms	1936 KB	Output is correct
16	Correct	0 ms	1936 KB	Output is correct
17	Correct	0 ms	1936 KB	Output is correct
18	Correct	0 ms	1936 KB	Output is correct
19	Correct	0 ms	1936 KB	Output is correct
20	Correct	0 ms	1936 KB	Output is correct
21	Correct	0 ms	1936 KB	Output is correct
22	Correct	0 ms	1936 KB	Output is correct
23	Correct	0 ms	1936 KB	Output is correct
24	Correct	0 ms	1936 KB	Output is correct
25	Correct	0 ms	1936 KB	Output is correct
26	Correct	0 ms	1936 KB	Output is correct
27	Correct	0 ms	1936 KB	Output is correct
28	Correct	0 ms	1936 KB	Output is correct
29	Correct	0 ms	1936 KB	Output is correct
30	Correct	0 ms	1936 KB	Output is correct
31	Correct	0 ms	1936 KB	Output is correct
32	Correct	0 ms	1936 KB	Output is correct
33	Correct	0 ms	1936 KB	Output is correct
34	Correct	0 ms	1936 KB	Output is correct
35	Correct	0 ms	1936 KB	Output is correct
36	Correct	1549 ms	2616 KB	Output is correct
37	Correct	973 ms	2424 KB	Output is correct
38	Correct	306 ms	2228 KB	Output is correct
39	Correct	0 ms	2228 KB	Output is correct
40	Correct	1079 ms	2424 KB	Output is correct
41	Correct	1806 ms	2616 KB	Output is correct
42	Correct	1559 ms	2616 KB	Output is correct
43	Correct	0 ms	1936 KB	Output is correct
44	Correct	1223 ms	2424 KB	Output is correct
45	Correct	0 ms	2228 KB	Output is correct
46	Correct	546 ms	2424 KB	Output is correct
47	Correct	719 ms	2424 KB	Output is correct
48	Correct	723 ms	2424 KB	Output is correct
49	Correct	6 ms	2228 KB	Output is correct
50	Correct	3 ms	2228 KB	Output is correct
51	Correct	3 ms	2228 KB	Output is correct
52	Correct	46 ms	2112 KB	Output is correct
53	Correct	1839 ms	2616 KB	Output is correct
54	Correct	243 ms	2320 KB	Output is correct
55	Correct	1593 ms	2616 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1936 KB	Output is correct
2	Correct	0 ms	1936 KB	Output is correct
3	Correct	0 ms	1936 KB	Output is correct
4	Correct	0 ms	1936 KB	Output is correct
5	Correct	0 ms	1936 KB	Output is correct
6	Correct	0 ms	1936 KB	Output is correct
7	Correct	0 ms	1936 KB	Output is correct
8	Correct	0 ms	1936 KB	Output is correct
9	Correct	0 ms	1936 KB	Output is correct
10	Correct	0 ms	1936 KB	Output is correct
11	Correct	0 ms	1936 KB	Output is correct
12	Correct	0 ms	1936 KB	Output is correct
13	Correct	0 ms	1936 KB	Output is correct
14	Correct	0 ms	1936 KB	Output is correct
15	Correct	0 ms	1936 KB	Output is correct
16	Correct	0 ms	1936 KB	Output is correct
17	Correct	0 ms	1936 KB	Output is correct
18	Correct	0 ms	1936 KB	Output is correct
19	Correct	0 ms	1936 KB	Output is correct
20	Correct	0 ms	1936 KB	Output is correct
21	Correct	0 ms	1936 KB	Output is correct
22	Correct	0 ms	1936 KB	Output is correct
23	Correct	0 ms	1936 KB	Output is correct
24	Correct	0 ms	1936 KB	Output is correct
25	Correct	0 ms	1936 KB	Output is correct
26	Correct	0 ms	1936 KB	Output is correct
27	Correct	0 ms	1936 KB	Output is correct
28	Correct	0 ms	1936 KB	Output is correct
29	Correct	0 ms	1936 KB	Output is correct
30	Correct	0 ms	1936 KB	Output is correct
31	Correct	0 ms	1936 KB	Output is correct
32	Correct	0 ms	1936 KB	Output is correct
33	Correct	0 ms	1936 KB	Output is correct
34	Correct	0 ms	1936 KB	Output is correct
35	Correct	0 ms	1936 KB	Output is correct
36	Correct	0 ms	1936 KB	Output is correct
37	Correct	0 ms	1936 KB	Output is correct
38	Correct	0 ms	1936 KB	Output is correct
39	Correct	179 ms	2228 KB	Output is correct
40	Execution timed out	3000 ms	12348 KB	Execution timed out
41	Execution timed out	3000 ms	22588 KB	Execution timed out
42	Execution timed out	3000 ms	22588 KB	Execution timed out
43	Correct	0 ms	1936 KB	Output is correct
44	Execution timed out	3000 ms	22588 KB	Execution timed out
45	Execution timed out	3000 ms	22588 KB	Execution timed out
46	Execution timed out	3000 ms	7740 KB	Execution timed out
47	Execution timed out	3000 ms	22588 KB	Execution timed out
48	Execution timed out	3000 ms	22588 KB	Execution timed out
49	Correct	79 ms	12348 KB	Output is correct
50	Execution timed out	3000 ms	16444 KB	Execution timed out
51	Correct	83 ms	12348 KB	Output is correct
52	Execution timed out	3000 ms	22588 KB	Execution timed out
53	Execution timed out	3000 ms	22588 KB	Execution timed out
54	Execution timed out	3000 ms	22588 KB	Execution timed out
55	Correct	1549 ms	2616 KB	Output is correct
56	Correct	973 ms	2424 KB	Output is correct
57	Correct	306 ms	2228 KB	Output is correct
58	Correct	0 ms	2228 KB	Output is correct
59	Correct	1079 ms	2424 KB	Output is correct
60	Correct	1806 ms	2616 KB	Output is correct
61	Correct	1559 ms	2616 KB	Output is correct
62	Correct	0 ms	1936 KB	Output is correct
63	Correct	1223 ms	2424 KB	Output is correct
64	Correct	0 ms	2228 KB	Output is correct
65	Correct	546 ms	2424 KB	Output is correct
66	Correct	719 ms	2424 KB	Output is correct
67	Correct	723 ms	2424 KB	Output is correct
68	Correct	6 ms	2228 KB	Output is correct
69	Correct	3 ms	2228 KB	Output is correct
70	Correct	3 ms	2228 KB	Output is correct
71	Correct	46 ms	2112 KB	Output is correct
72	Correct	1839 ms	2616 KB	Output is correct
73	Correct	243 ms	2320 KB	Output is correct
74	Correct	1593 ms	2616 KB	Output is correct
75	Execution timed out	3000 ms	22588 KB	Execution timed out
76	Execution timed out	3000 ms	14396 KB	Execution timed out
77	Execution timed out	3000 ms	12348 KB	Execution timed out
78	Correct	63 ms	12348 KB	Output is correct
79	Execution timed out	3000 ms	13372 KB	Execution timed out
80	Execution timed out	3000 ms	22588 KB	Execution timed out
81	Correct	619 ms	2424 KB	Output is correct
82	Execution timed out	3000 ms	22588 KB	Execution timed out
83	Correct	59 ms	12348 KB	Output is correct
84	Execution timed out	3000 ms	22588 KB	Execution timed out
85	Execution timed out	3000 ms	16444 KB	Execution timed out
86	Execution timed out	3000 ms	16444 KB	Execution timed out
87	Correct	183 ms	12348 KB	Output is correct
88	Correct	226 ms	12348 KB	Output is correct
89	Execution timed out	3000 ms	22588 KB	Execution timed out
90	Execution timed out	3000 ms	22588 KB	Execution timed out
91	Execution timed out	3000 ms	22588 KB	Execution timed out
92	Execution timed out	3000 ms	22588 KB	Execution timed out
93	Execution timed out	3000 ms	16444 KB	Execution timed out
94	Execution timed out	3000 ms	22588 KB	Execution timed out
95	Execution timed out	3000 ms	22588 KB	Execution timed out

답안 #20543

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