답안 #20579 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
20579	2017-02-12T12:46:39 Z	G(#74, gs12117)	초음속철도 (OJUZ11_rail)	C++11	100 / 100	1829 ms	62272 KB

rail

#include<cstdio>
#include<algorithm>
#include<set>
#include<map>
#include<vector>
int n, m;
const int mod = 1000000007;
const int itsz = 1 << 19;
int inp[200100][2];
struct train {
	int s, e;
	bool operator<(const train&r)const {
		return s < r.s;
	}
};
train tl[200100];
long long int it[itsz * 2];
long long int itmult[itsz * 2];
int itrt[itsz * 2];
int itqn;
std::vector<int> bneed;
void itrefresh(int loc) {
	if (itrt[loc] == itqn)return;
	itrt[loc] = itqn;
	bneed.push_back(loc);
	if (loc != 1)itrefresh(loc / 2);
	it[loc] *= itmult[loc];
	it[loc] %= mod;
	if (loc < itsz) {
		itmult[loc * 2] *= itmult[loc];
		itmult[loc * 2] %= mod;
		itmult[loc * 2 + 1] *= itmult[loc];
		itmult[loc * 2 + 1] %= mod;
	}
	itmult[loc] = 1;
}
void itbuild(int loc) {
	if (loc < itsz) {
		it[loc] = it[loc * 2] * itmult[loc * 2] + it[loc * 2 + 1] * itmult[loc * 2 + 1];
		it[loc] %= mod;
	}
}
void itb() {
	for (int i : bneed) {
		itbuild(i);
	}
}
void itpush(int loc, int val) {
	itqn++;
	bneed.clear();
	loc += itsz;
	itrefresh(loc);
	it[loc] += val;
	it[loc] %= mod;
	itb();
}
int itcalc(int start, int end) {
	start += itsz;
	end += itsz;
	long long int res = 0;
	while (start <= end) {
		if (start % 2 == 1) {
			itrefresh(start);
			res += it[start];
			res %= mod;
			start++;
		}
		if (end % 2 == 0) {
			itrefresh(end);
			res += it[end];
			res %= mod;
			end--;
		}
		start /= 2;
		end /= 2;
	}
	return res;
}
void itdouble(int start, int end) {
	int ts, te;
	itqn++;
	bneed.clear();
	start += itsz;
	end += itsz;
	ts = start;
	te = end;
	while (start <= end) {
		if (start % 2 == 1) {
			itmult[start] *= 2;
			itmult[start] %= mod;
			start++;
		}
		if (end % 2 == 0) {
			itmult[end] *= 2;
			itmult[end] %= mod;
			end--;
		}
		start /= 2;
		end /= 2;
	}
	start = ts;
	end = te;
	while (start <= end) {
		if (start % 2 == 1) {
			itrefresh(start);
			start++;
		}
		if (end % 2 == 0) {
			itrefresh(end);
			end--;
		}
		start /= 2;
		end /= 2;
	}
	itb();
}
int main() {
	scanf("%d%d", &n, &m);
	for (int i = 0; i < m; i++) {
		scanf("%d%d", &inp[i][0], &inp[i][1]);
	}
	std::set<int> sp;
	std::map<int, int> mp;
	for (int i = 0; i < m; i++) {
		sp.insert(inp[i][0]);
		sp.insert(inp[i][1]);
	}
	sp.insert(1);
	sp.insert(n);
	int cnt = 0;
	for (auto &i : sp) {
		cnt++;
		mp[i] = cnt;
	}
	for (int i = 0; i < m; i++) {
		tl[i].s = mp[inp[i][0]];
		tl[i].e = mp[inp[i][1]];
	}
	std::sort(tl, tl + m);
	itpush(1, 1);
	for (int i = 0; i < m; i++) {
		itpush(tl[i].e, itcalc(tl[i].s, tl[i].e));
		itdouble(tl[i].e + 1, cnt);
	}
	printf("%d", itcalc(cnt, cnt));
	return 0;
}

Compilation message

rail.cpp: In function 'int main()':
rail.cpp:118:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
                       ^
rail.cpp:120:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &inp[i][0], &inp[i][1]);
                                        ^

Subtask #1
10.0 / 10.0

#	결과	메모리	Grader output
1	Correct	24784 KB	Output is correct
2	Correct	24784 KB	Output is correct
3	Correct	24784 KB	Output is correct
4	Correct	24784 KB	Output is correct
5	Correct	24784 KB	Output is correct
6	Correct	24784 KB	Output is correct
7	Correct	24784 KB	Output is correct
8	Correct	24784 KB	Output is correct
9	Correct	24784 KB	Output is correct
10	Correct	24784 KB	Output is correct
11	Correct	24784 KB	Output is correct
12	Correct	24784 KB	Output is correct
13	Correct	24784 KB	Output is correct
14	Correct	24784 KB	Output is correct
15	Correct	24784 KB	Output is correct
16	Correct	24784 KB	Output is correct
17	Correct	24784 KB	Output is correct
18	Correct	24784 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	메모리	Grader output
1	Correct	24784 KB	Output is correct
2	Correct	24784 KB	Output is correct
3	Correct	24784 KB	Output is correct
4	Correct	24784 KB	Output is correct
5	Correct	24784 KB	Output is correct
6	Correct	24784 KB	Output is correct
7	Correct	24784 KB	Output is correct
8	Correct	24784 KB	Output is correct
9	Correct	24784 KB	Output is correct
10	Correct	24784 KB	Output is correct
11	Correct	24784 KB	Output is correct
12	Correct	24784 KB	Output is correct
13	Correct	24784 KB	Output is correct
14	Correct	24784 KB	Output is correct
15	Correct	24784 KB	Output is correct
16	Correct	24784 KB	Output is correct
17	Correct	24784 KB	Output is correct
18	Correct	24784 KB	Output is correct
19	Correct	24784 KB	Output is correct
20	Correct	24784 KB	Output is correct
21	Correct	24784 KB	Output is correct
22	Correct	24784 KB	Output is correct
23	Correct	24784 KB	Output is correct
24	Correct	24784 KB	Output is correct
25	Correct	24784 KB	Output is correct
26	Correct	24784 KB	Output is correct
27	Correct	24784 KB	Output is correct
28	Correct	24784 KB	Output is correct
29	Correct	24784 KB	Output is correct
30	Correct	24784 KB	Output is correct
31	Correct	24784 KB	Output is correct
32	Correct	24784 KB	Output is correct
33	Correct	24784 KB	Output is correct
34	Correct	24784 KB	Output is correct
35	Correct	24784 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	24784 KB	Output is correct
2	Correct	0 ms	24784 KB	Output is correct
3	Correct	0 ms	24784 KB	Output is correct
4	Correct	9 ms	24916 KB	Output is correct
5	Correct	403 ms	29932 KB	Output is correct
6	Correct	1059 ms	59104 KB	Output is correct
7	Correct	1079 ms	58708 KB	Output is correct
8	Correct	0 ms	24784 KB	Output is correct
9	Correct	966 ms	56596 KB	Output is correct
10	Correct	993 ms	58312 KB	Output is correct
11	Correct	343 ms	27952 KB	Output is correct
12	Correct	1079 ms	59104 KB	Output is correct
13	Correct	1153 ms	58576 KB	Output is correct
14	Correct	296 ms	24784 KB	Output is correct
15	Correct	933 ms	43528 KB	Output is correct
16	Correct	316 ms	24784 KB	Output is correct
17	Correct	1103 ms	59236 KB	Output is correct
18	Correct	1116 ms	59104 KB	Output is correct
19	Correct	1049 ms	54220 KB	Output is correct

Subtask #4
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	24784 KB	Output is correct
2	Correct	0 ms	24784 KB	Output is correct
3	Correct	0 ms	24784 KB	Output is correct
4	Correct	0 ms	24784 KB	Output is correct
5	Correct	0 ms	24784 KB	Output is correct
6	Correct	0 ms	24784 KB	Output is correct
7	Correct	0 ms	24784 KB	Output is correct
8	Correct	0 ms	24784 KB	Output is correct
9	Correct	0 ms	24784 KB	Output is correct
10	Correct	0 ms	24784 KB	Output is correct
11	Correct	0 ms	24784 KB	Output is correct
12	Correct	0 ms	24784 KB	Output is correct
13	Correct	0 ms	24784 KB	Output is correct
14	Correct	0 ms	24784 KB	Output is correct
15	Correct	0 ms	24784 KB	Output is correct
16	Correct	0 ms	24784 KB	Output is correct
17	Correct	0 ms	24784 KB	Output is correct
18	Correct	0 ms	24784 KB	Output is correct
19	Correct	0 ms	24784 KB	Output is correct
20	Correct	0 ms	24784 KB	Output is correct
21	Correct	0 ms	24784 KB	Output is correct
22	Correct	0 ms	24784 KB	Output is correct
23	Correct	0 ms	24784 KB	Output is correct
24	Correct	0 ms	24784 KB	Output is correct
25	Correct	0 ms	24784 KB	Output is correct
26	Correct	0 ms	24784 KB	Output is correct
27	Correct	0 ms	24784 KB	Output is correct
28	Correct	0 ms	24784 KB	Output is correct
29	Correct	0 ms	24784 KB	Output is correct
30	Correct	0 ms	24784 KB	Output is correct
31	Correct	0 ms	24784 KB	Output is correct
32	Correct	0 ms	24784 KB	Output is correct
33	Correct	0 ms	24784 KB	Output is correct
34	Correct	0 ms	24784 KB	Output is correct
35	Correct	0 ms	24784 KB	Output is correct
36	Correct	19 ms	25708 KB	Output is correct
37	Correct	13 ms	25576 KB	Output is correct
38	Correct	13 ms	25048 KB	Output is correct
39	Correct	6 ms	24784 KB	Output is correct
40	Correct	13 ms	25312 KB	Output is correct
41	Correct	13 ms	25708 KB	Output is correct
42	Correct	19 ms	25708 KB	Output is correct
43	Correct	0 ms	24784 KB	Output is correct
44	Correct	16 ms	25444 KB	Output is correct
45	Correct	3 ms	24784 KB	Output is correct
46	Correct	9 ms	25312 KB	Output is correct
47	Correct	16 ms	25312 KB	Output is correct
48	Correct	13 ms	25312 KB	Output is correct
49	Correct	6 ms	24784 KB	Output is correct
50	Correct	6 ms	24784 KB	Output is correct
51	Correct	6 ms	24784 KB	Output is correct
52	Correct	3 ms	25048 KB	Output is correct
53	Correct	16 ms	25708 KB	Output is correct
54	Correct	6 ms	25048 KB	Output is correct
55	Correct	13 ms	25708 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	24784 KB	Output is correct
2	Correct	0 ms	24784 KB	Output is correct
3	Correct	0 ms	24784 KB	Output is correct
4	Correct	0 ms	24784 KB	Output is correct
5	Correct	0 ms	24784 KB	Output is correct
6	Correct	0 ms	24784 KB	Output is correct
7	Correct	0 ms	24784 KB	Output is correct
8	Correct	0 ms	24784 KB	Output is correct
9	Correct	0 ms	24784 KB	Output is correct
10	Correct	0 ms	24784 KB	Output is correct
11	Correct	0 ms	24784 KB	Output is correct
12	Correct	0 ms	24784 KB	Output is correct
13	Correct	0 ms	24784 KB	Output is correct
14	Correct	0 ms	24784 KB	Output is correct
15	Correct	0 ms	24784 KB	Output is correct
16	Correct	0 ms	24784 KB	Output is correct
17	Correct	0 ms	24784 KB	Output is correct
18	Correct	0 ms	24784 KB	Output is correct
19	Correct	0 ms	24784 KB	Output is correct
20	Correct	0 ms	24784 KB	Output is correct
21	Correct	0 ms	24784 KB	Output is correct
22	Correct	0 ms	24784 KB	Output is correct
23	Correct	0 ms	24784 KB	Output is correct
24	Correct	0 ms	24784 KB	Output is correct
25	Correct	0 ms	24784 KB	Output is correct
26	Correct	0 ms	24784 KB	Output is correct
27	Correct	0 ms	24784 KB	Output is correct
28	Correct	0 ms	24784 KB	Output is correct
29	Correct	0 ms	24784 KB	Output is correct
30	Correct	0 ms	24784 KB	Output is correct
31	Correct	0 ms	24784 KB	Output is correct
32	Correct	0 ms	24784 KB	Output is correct
33	Correct	0 ms	24784 KB	Output is correct
34	Correct	0 ms	24784 KB	Output is correct
35	Correct	0 ms	24784 KB	Output is correct
36	Correct	0 ms	24784 KB	Output is correct
37	Correct	0 ms	24784 KB	Output is correct
38	Correct	0 ms	24784 KB	Output is correct
39	Correct	9 ms	24916 KB	Output is correct
40	Correct	403 ms	29932 KB	Output is correct
41	Correct	1059 ms	59104 KB	Output is correct
42	Correct	1079 ms	58708 KB	Output is correct
43	Correct	0 ms	24784 KB	Output is correct
44	Correct	966 ms	56596 KB	Output is correct
45	Correct	993 ms	58312 KB	Output is correct
46	Correct	343 ms	27952 KB	Output is correct
47	Correct	1079 ms	59104 KB	Output is correct
48	Correct	1153 ms	58576 KB	Output is correct
49	Correct	296 ms	24784 KB	Output is correct
50	Correct	933 ms	43528 KB	Output is correct
51	Correct	316 ms	24784 KB	Output is correct
52	Correct	1103 ms	59236 KB	Output is correct
53	Correct	1116 ms	59104 KB	Output is correct
54	Correct	1049 ms	54220 KB	Output is correct
55	Correct	19 ms	25708 KB	Output is correct
56	Correct	13 ms	25576 KB	Output is correct
57	Correct	13 ms	25048 KB	Output is correct
58	Correct	6 ms	24784 KB	Output is correct
59	Correct	13 ms	25312 KB	Output is correct
60	Correct	13 ms	25708 KB	Output is correct
61	Correct	19 ms	25708 KB	Output is correct
62	Correct	0 ms	24784 KB	Output is correct
63	Correct	16 ms	25444 KB	Output is correct
64	Correct	3 ms	24784 KB	Output is correct
65	Correct	9 ms	25312 KB	Output is correct
66	Correct	16 ms	25312 KB	Output is correct
67	Correct	13 ms	25312 KB	Output is correct
68	Correct	6 ms	24784 KB	Output is correct
69	Correct	6 ms	24784 KB	Output is correct
70	Correct	6 ms	24784 KB	Output is correct
71	Correct	3 ms	25048 KB	Output is correct
72	Correct	16 ms	25708 KB	Output is correct
73	Correct	6 ms	25048 KB	Output is correct
74	Correct	13 ms	25708 KB	Output is correct
75	Correct	1696 ms	62272 KB	Output is correct
76	Correct	989 ms	49336 KB	Output is correct
77	Correct	503 ms	25048 KB	Output is correct
78	Correct	269 ms	24784 KB	Output is correct
79	Correct	829 ms	31912 KB	Output is correct
80	Correct	1716 ms	62272 KB	Output is correct
81	Correct	16 ms	25180 KB	Output is correct
82	Correct	1556 ms	58180 KB	Output is correct
83	Correct	236 ms	24784 KB	Output is correct
84	Correct	1333 ms	52900 KB	Output is correct
85	Correct	1203 ms	43528 KB	Output is correct
86	Correct	1259 ms	43528 KB	Output is correct
87	Correct	356 ms	24784 KB	Output is correct
88	Correct	369 ms	24784 KB	Output is correct
89	Correct	1683 ms	62272 KB	Output is correct
90	Correct	1829 ms	62272 KB	Output is correct
91	Correct	1743 ms	62272 KB	Output is correct
92	Correct	1639 ms	61216 KB	Output is correct
93	Correct	1306 ms	43528 KB	Output is correct
94	Correct	1763 ms	62272 KB	Output is correct
95	Correct	1713 ms	62272 KB	Output is correct

답안 #20579

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 25.0

Subtask #4 27.0 / 27.0

Subtask #5 30.0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
8.0 / 8.0

Subtask #3
25.0 / 25.0

Subtask #4
27.0 / 27.0

Subtask #5
30.0 / 30.0