Submission #261084

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
261084	2020-08-11T11:23:31 Z	srvlt	Boat (APIO16_boat)	C++14	100 / 100	225 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(unsigned 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;
	unsigned 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++) {
		unsigned int cur = 0;
		int 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;
		}
	}
	unsigned 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

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 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	5 ms	8320 KB	Output is correct
5	Correct	6 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	5 ms	8320 KB	Output is correct
9	Correct	5 ms	8352 KB	Output is correct
10	Correct	5 ms	8320 KB	Output is correct
11	Correct	6 ms	8320 KB	Output is correct
12	Correct	6 ms	8320 KB	Output is correct
13	Correct	5 ms	8320 KB	Output is correct
14	Correct	6 ms	8320 KB	Output is correct
15	Correct	5 ms	8320 KB	Output is correct
16	Correct	5 ms	8320 KB	Output is correct
17	Correct	5 ms	8320 KB	Output is correct
18	Correct	5 ms	8320 KB	Output is correct
19	Correct	5 ms	8320 KB	Output is correct
20	Correct	5 ms	8320 KB	Output is correct

Subtask #2
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 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	5 ms	8320 KB	Output is correct
5	Correct	6 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	5 ms	8320 KB	Output is correct
9	Correct	5 ms	8352 KB	Output is correct
10	Correct	5 ms	8320 KB	Output is correct
11	Correct	6 ms	8320 KB	Output is correct
12	Correct	6 ms	8320 KB	Output is correct
13	Correct	5 ms	8320 KB	Output is correct
14	Correct	6 ms	8320 KB	Output is correct
15	Correct	5 ms	8320 KB	Output is correct
16	Correct	5 ms	8320 KB	Output is correct
17	Correct	5 ms	8320 KB	Output is correct
18	Correct	5 ms	8320 KB	Output is correct
19	Correct	5 ms	8320 KB	Output is correct
20	Correct	5 ms	8320 KB	Output is correct
21	Correct	89 ms	8320 KB	Output is correct
22	Correct	84 ms	8312 KB	Output is correct
23	Correct	80 ms	8312 KB	Output is correct
24	Correct	84 ms	8440 KB	Output is correct
25	Correct	89 ms	8440 KB	Output is correct
26	Correct	185 ms	8320 KB	Output is correct
27	Correct	185 ms	8192 KB	Output is correct
28	Correct	181 ms	8440 KB	Output is correct
29	Correct	177 ms	8308 KB	Output is correct
30	Correct	6 ms	8320 KB	Output is correct
31	Correct	5 ms	8320 KB	Output is correct
32	Correct	5 ms	8320 KB	Output is correct
33	Correct	5 ms	8320 KB	Output is correct
34	Correct	5 ms	8320 KB	Output is correct
35	Correct	5 ms	8320 KB	Output is correct
36	Correct	5 ms	8320 KB	Output is correct
37	Correct	5 ms	8320 KB	Output is correct
38	Correct	6 ms	8320 KB	Output is correct

Subtask #3
27.0 / 27.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	8192 KB	Output is correct
2	Correct	5 ms	8192 KB	Output is correct
3	Correct	5 ms	8192 KB	Output is correct
4	Correct	6 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	6 ms	8192 KB	Output is correct
8	Correct	7 ms	8192 KB	Output is correct
9	Correct	6 ms	8192 KB	Output is correct
10	Correct	7 ms	8192 KB	Output is correct
11	Correct	5 ms	8192 KB	Output is correct
12	Correct	5 ms	8192 KB	Output is correct
13	Correct	6 ms	8320 KB	Output is correct
14	Correct	5 ms	8192 KB	Output is correct
15	Correct	5 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	8320 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

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 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	5 ms	8320 KB	Output is correct
5	Correct	6 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	5 ms	8320 KB	Output is correct
9	Correct	5 ms	8352 KB	Output is correct
10	Correct	5 ms	8320 KB	Output is correct
11	Correct	6 ms	8320 KB	Output is correct
12	Correct	6 ms	8320 KB	Output is correct
13	Correct	5 ms	8320 KB	Output is correct
14	Correct	6 ms	8320 KB	Output is correct
15	Correct	5 ms	8320 KB	Output is correct
16	Correct	5 ms	8320 KB	Output is correct
17	Correct	5 ms	8320 KB	Output is correct
18	Correct	5 ms	8320 KB	Output is correct
19	Correct	5 ms	8320 KB	Output is correct
20	Correct	5 ms	8320 KB	Output is correct
21	Correct	89 ms	8320 KB	Output is correct
22	Correct	84 ms	8312 KB	Output is correct
23	Correct	80 ms	8312 KB	Output is correct
24	Correct	84 ms	8440 KB	Output is correct
25	Correct	89 ms	8440 KB	Output is correct
26	Correct	185 ms	8320 KB	Output is correct
27	Correct	185 ms	8192 KB	Output is correct
28	Correct	181 ms	8440 KB	Output is correct
29	Correct	177 ms	8308 KB	Output is correct
30	Correct	6 ms	8320 KB	Output is correct
31	Correct	5 ms	8320 KB	Output is correct
32	Correct	5 ms	8320 KB	Output is correct
33	Correct	5 ms	8320 KB	Output is correct
34	Correct	5 ms	8320 KB	Output is correct
35	Correct	5 ms	8320 KB	Output is correct
36	Correct	5 ms	8320 KB	Output is correct
37	Correct	5 ms	8320 KB	Output is correct
38	Correct	6 ms	8320 KB	Output is correct
39	Correct	5 ms	8192 KB	Output is correct
40	Correct	5 ms	8192 KB	Output is correct
41	Correct	5 ms	8192 KB	Output is correct
42	Correct	6 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	6 ms	8192 KB	Output is correct
46	Correct	7 ms	8192 KB	Output is correct
47	Correct	6 ms	8192 KB	Output is correct
48	Correct	7 ms	8192 KB	Output is correct
49	Correct	5 ms	8192 KB	Output is correct
50	Correct	5 ms	8192 KB	Output is correct
51	Correct	6 ms	8320 KB	Output is correct
52	Correct	5 ms	8192 KB	Output is correct
53	Correct	5 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	8320 KB	Output is correct
57	Correct	5 ms	8192 KB	Output is correct
58	Correct	6 ms	8192 KB	Output is correct
59	Correct	95 ms	8440 KB	Output is correct
60	Correct	86 ms	8320 KB	Output is correct
61	Correct	86 ms	8320 KB	Output is correct
62	Correct	110 ms	8312 KB	Output is correct
63	Correct	94 ms	8320 KB	Output is correct
64	Correct	212 ms	8312 KB	Output is correct
65	Correct	209 ms	8440 KB	Output is correct
66	Correct	210 ms	8440 KB	Output is correct
67	Correct	206 ms	8312 KB	Output is correct
68	Correct	225 ms	8440 KB	Output is correct
69	Correct	87 ms	8320 KB	Output is correct
70	Correct	82 ms	8320 KB	Output is correct
71	Correct	81 ms	8320 KB	Output is correct
72	Correct	87 ms	8312 KB	Output is correct
73	Correct	91 ms	8440 KB	Output is correct
74	Correct	22 ms	8320 KB	Output is correct
75	Correct	21 ms	8396 KB	Output is correct
76	Correct	22 ms	8312 KB	Output is correct
77	Correct	23 ms	8320 KB	Output is correct
78	Correct	22 ms	8352 KB	Output is correct

Submission #261084

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