답안 #261077

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
261077	2020-08-11T11:18:16 Z	srvlt	Boat (APIO16_boat)	C++14	100 / 100	336 ms	8440 KB

boat

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define all(x) begin(x), end(x)
#define SZ(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int n0 = 1003, mod = 1e9 + 7;
int n, l[n0], r[n0], k, inv[n0];

void add(int & x, int y) {
	x += y;
	if (x >= mod) x -= mod;
}

int bp(int x, int y) {
	int res = 1;
	while (y) {
		if (y & 1)
			res = (ll)res * x % mod;
		x = (ll)x * x % mod;
		y /= 2;
	}
	return res;
}

struct Block {
	int l = 0, r = 0, t = 0;
	int val[n0], c[n0], cur = 0, last = 0;
	Block() {
		c[0] = 1;
	}
	void upd(int x) {
		val[t++] = x;
		c[t] = ((ll)c[t - 1] * (r - l + t) % mod) * inv[t] % mod;
		cur = last = 0;
		for (int i = 0; i < t; i++) {
			add(cur, (ll)c[t - i] * val[i] % mod);
			add(last, (ll)c[t - i - 1] * val[i] % mod);
		}
	}
};
Block b[n0];

int main() {
	ios_base::sync_with_stdio(false), cin.tie(NULL);
	for (int i = 1; i < n0; i++)
		inv[i] = bp(i, mod - 2);
	cin >> n;
	vector <int> crd;
	for (int i = 0; i < n; i++) {
		cin >> l[i] >> r[i];
		r[i]++;
		crd.pb(l[i]), crd.pb(r[i]);
	}
	crd.pb(0), crd.pb(1);
	sort(all(crd));
	for (int i = 1; i < SZ(crd); i++) {
		if (crd[i - 1] < crd[i]) {
			b[k].l = crd[i - 1];
			b[k++].r = crd[i] - 1;
		}
	}
	b[0].upd(1);
	for (int i = 0; i < n; i++) {
		int cur = 0, j = 0;
		for (; j < k && b[j].r < l[i]; j++)
			add(cur, b[j].cur);
		for (; j < k && b[j].r < r[i]; j++) {
			b[j].upd(cur);
			cur = b[j].last;
		}
	}
	int res = 0;
	for (int i = 0; i < k; i++)
		add(res, b[i].cur);
	add(res, mod - 1);
	cout << res;
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8320 KB	Output is correct
2	Correct	6 ms	8320 KB	Output is correct
3	Correct	5 ms	8320 KB	Output is correct
4	Correct	6 ms	8320 KB	Output is correct
5	Correct	8 ms	8320 KB	Output is correct
6	Correct	6 ms	8320 KB	Output is correct
7	Correct	6 ms	8320 KB	Output is correct
8	Correct	6 ms	8320 KB	Output is correct
9	Correct	6 ms	8192 KB	Output is correct
10	Correct	7 ms	8320 KB	Output is correct
11	Correct	5 ms	8320 KB	Output is correct
12	Correct	7 ms	8320 KB	Output is correct
13	Correct	7 ms	8320 KB	Output is correct
14	Correct	7 ms	8320 KB	Output is correct
15	Correct	6 ms	8320 KB	Output is correct
16	Correct	5 ms	8320 KB	Output is correct
17	Correct	6 ms	8320 KB	Output is correct
18	Correct	5 ms	8320 KB	Output is correct
19	Correct	4 ms	8320 KB	Output is correct
20	Correct	6 ms	8320 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8320 KB	Output is correct
2	Correct	6 ms	8320 KB	Output is correct
3	Correct	5 ms	8320 KB	Output is correct
4	Correct	6 ms	8320 KB	Output is correct
5	Correct	8 ms	8320 KB	Output is correct
6	Correct	6 ms	8320 KB	Output is correct
7	Correct	6 ms	8320 KB	Output is correct
8	Correct	6 ms	8320 KB	Output is correct
9	Correct	6 ms	8192 KB	Output is correct
10	Correct	7 ms	8320 KB	Output is correct
11	Correct	5 ms	8320 KB	Output is correct
12	Correct	7 ms	8320 KB	Output is correct
13	Correct	7 ms	8320 KB	Output is correct
14	Correct	7 ms	8320 KB	Output is correct
15	Correct	6 ms	8320 KB	Output is correct
16	Correct	5 ms	8320 KB	Output is correct
17	Correct	6 ms	8320 KB	Output is correct
18	Correct	5 ms	8320 KB	Output is correct
19	Correct	4 ms	8320 KB	Output is correct
20	Correct	6 ms	8320 KB	Output is correct
21	Correct	118 ms	8308 KB	Output is correct
22	Correct	113 ms	8192 KB	Output is correct
23	Correct	129 ms	8312 KB	Output is correct
24	Correct	107 ms	8312 KB	Output is correct
25	Correct	108 ms	8192 KB	Output is correct
26	Correct	230 ms	8320 KB	Output is correct
27	Correct	267 ms	8312 KB	Output is correct
28	Correct	237 ms	8192 KB	Output is correct
29	Correct	233 ms	8312 KB	Output is correct
30	Correct	6 ms	8320 KB	Output is correct
31	Correct	6 ms	8320 KB	Output is correct
32	Correct	5 ms	8320 KB	Output is correct
33	Correct	7 ms	8192 KB	Output is correct
34	Correct	5 ms	8320 KB	Output is correct
35	Correct	6 ms	8320 KB	Output is correct
36	Correct	5 ms	8320 KB	Output is correct
37	Correct	6 ms	8320 KB	Output is correct
38	Correct	5 ms	8320 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	8192 KB	Output is correct
2	Correct	6 ms	8192 KB	Output is correct
3	Correct	7 ms	8320 KB	Output is correct
4	Correct	7 ms	8192 KB	Output is correct
5	Correct	6 ms	8192 KB	Output is correct
6	Correct	7 ms	8192 KB	Output is correct
7	Correct	7 ms	8192 KB	Output is correct
8	Correct	7 ms	8192 KB	Output is correct
9	Correct	8 ms	8192 KB	Output is correct
10	Correct	9 ms	8192 KB	Output is correct
11	Correct	7 ms	8192 KB	Output is correct
12	Correct	6 ms	8192 KB	Output is correct
13	Correct	6 ms	8192 KB	Output is correct
14	Correct	6 ms	8192 KB	Output is correct
15	Correct	6 ms	8192 KB	Output is correct
16	Correct	5 ms	8192 KB	Output is correct
17	Correct	5 ms	8192 KB	Output is correct
18	Correct	5 ms	8192 KB	Output is correct
19	Correct	5 ms	8192 KB	Output is correct
20	Correct	6 ms	8192 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8320 KB	Output is correct
2	Correct	6 ms	8320 KB	Output is correct
3	Correct	5 ms	8320 KB	Output is correct
4	Correct	6 ms	8320 KB	Output is correct
5	Correct	8 ms	8320 KB	Output is correct
6	Correct	6 ms	8320 KB	Output is correct
7	Correct	6 ms	8320 KB	Output is correct
8	Correct	6 ms	8320 KB	Output is correct
9	Correct	6 ms	8192 KB	Output is correct
10	Correct	7 ms	8320 KB	Output is correct
11	Correct	5 ms	8320 KB	Output is correct
12	Correct	7 ms	8320 KB	Output is correct
13	Correct	7 ms	8320 KB	Output is correct
14	Correct	7 ms	8320 KB	Output is correct
15	Correct	6 ms	8320 KB	Output is correct
16	Correct	5 ms	8320 KB	Output is correct
17	Correct	6 ms	8320 KB	Output is correct
18	Correct	5 ms	8320 KB	Output is correct
19	Correct	4 ms	8320 KB	Output is correct
20	Correct	6 ms	8320 KB	Output is correct
21	Correct	118 ms	8308 KB	Output is correct
22	Correct	113 ms	8192 KB	Output is correct
23	Correct	129 ms	8312 KB	Output is correct
24	Correct	107 ms	8312 KB	Output is correct
25	Correct	108 ms	8192 KB	Output is correct
26	Correct	230 ms	8320 KB	Output is correct
27	Correct	267 ms	8312 KB	Output is correct
28	Correct	237 ms	8192 KB	Output is correct
29	Correct	233 ms	8312 KB	Output is correct
30	Correct	6 ms	8320 KB	Output is correct
31	Correct	6 ms	8320 KB	Output is correct
32	Correct	5 ms	8320 KB	Output is correct
33	Correct	7 ms	8192 KB	Output is correct
34	Correct	5 ms	8320 KB	Output is correct
35	Correct	6 ms	8320 KB	Output is correct
36	Correct	5 ms	8320 KB	Output is correct
37	Correct	6 ms	8320 KB	Output is correct
38	Correct	5 ms	8320 KB	Output is correct
39	Correct	7 ms	8192 KB	Output is correct
40	Correct	6 ms	8192 KB	Output is correct
41	Correct	7 ms	8320 KB	Output is correct
42	Correct	7 ms	8192 KB	Output is correct
43	Correct	6 ms	8192 KB	Output is correct
44	Correct	7 ms	8192 KB	Output is correct
45	Correct	7 ms	8192 KB	Output is correct
46	Correct	7 ms	8192 KB	Output is correct
47	Correct	8 ms	8192 KB	Output is correct
48	Correct	9 ms	8192 KB	Output is correct
49	Correct	7 ms	8192 KB	Output is correct
50	Correct	6 ms	8192 KB	Output is correct
51	Correct	6 ms	8192 KB	Output is correct
52	Correct	6 ms	8192 KB	Output is correct
53	Correct	6 ms	8192 KB	Output is correct
54	Correct	5 ms	8192 KB	Output is correct
55	Correct	5 ms	8192 KB	Output is correct
56	Correct	5 ms	8192 KB	Output is correct
57	Correct	5 ms	8192 KB	Output is correct
58	Correct	6 ms	8192 KB	Output is correct
59	Correct	122 ms	8440 KB	Output is correct
60	Correct	116 ms	8320 KB	Output is correct
61	Correct	110 ms	8320 KB	Output is correct
62	Correct	125 ms	8320 KB	Output is correct
63	Correct	130 ms	8320 KB	Output is correct
64	Correct	336 ms	8320 KB	Output is correct
65	Correct	266 ms	8320 KB	Output is correct
66	Correct	286 ms	8320 KB	Output is correct
67	Correct	288 ms	8320 KB	Output is correct
68	Correct	267 ms	8320 KB	Output is correct
69	Correct	101 ms	8320 KB	Output is correct
70	Correct	104 ms	8320 KB	Output is correct
71	Correct	103 ms	8320 KB	Output is correct
72	Correct	124 ms	8320 KB	Output is correct
73	Correct	124 ms	8320 KB	Output is correct
74	Correct	28 ms	8320 KB	Output is correct
75	Correct	26 ms	8320 KB	Output is correct
76	Correct	34 ms	8312 KB	Output is correct
77	Correct	28 ms	8320 KB	Output is correct
78	Correct	31 ms	8320 KB	Output is correct

답안 #261077

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 22.0 / 22.0

Subtask #3 27.0 / 27.0

Subtask #4 42.0 / 42.0

Subtask #1
9.0 / 9.0

Subtask #2
22.0 / 22.0

Subtask #3
27.0 / 27.0

Subtask #4
42.0 / 42.0