답안 #345632

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
345632	2021-01-07T17:26:32 Z	maskoff	Bigger segments (IZhO19_segments)	C++14	100 / 100	115 ms	24416 KB

segments

	#include <bits/stdc++.h>
 
#define file ""
 
#define all(x) x.begin(), x.end()
 
#define sc second
#define fr first
 
#define pb push_back
#define mp make_pair
 
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pii;
 
const ll inf = 1e18 + 5;
const ll mod = 1e9 + 7;
 
const int N = 5e5 + 5;
 
int dx[] = {+1, 0, -1, 0};
int dy[] = {0, +1, 0, -1};

ll p[N], a[N];
ll n;
vector<pair<ll, ll>> dp(N + 5), all;

int get(ll x) {
	int l = 0;
	int r = all.size() - 1;
	int ans = -1;
	while (l <= r) {
	 	int m = l + r >> 1;
	 	if (all[m].fr <= x) l = m + 1, ans = m;
		else r = m - 1;
	}
	if (ans == -1) return 0;
	return all[ans].sc;
}
 	

int main() {  
	ios_base :: sync_with_stdio(false);               
	cin.tie(nullptr);                                               
	srand(time(nullptr));
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i];

	for (int i = 1; i <= n; i++) p[i] += p[i - 1] + a[i];

	for (int i = 1; i <= n; i++) {
	 	int pos = get(p[i]);
	 	//cerr << i << " " << pos << endl;
	 	dp[i].fr = dp[pos].fr + 1;
	 	dp[i].sc = p[i] - p[pos];
		while ((int)all.size() > 0 && all.back().fr >= dp[i].sc + p[i]) 
		 	all.pop_back();
		all.pb({dp[i].sc + p[i], i});
		/*for (auto t : all)
			cout << t.fr << " ";
		cout << endl; */
	}         

	/*for (int i = 1; i <= n; i++) 
	 	cout << i << ": " << dp[i].fr << " " << dp[i].sc << endl;  */
	cout << dp[n].fr;
  return 0;                   
}

Compilation message

segments.cpp: In function 'int get(ll)':
segments.cpp:35:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   35 |    int m = l + r >> 1;
      |            ~~^~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8172 KB	Output is correct
2	Correct	4 ms	8172 KB	Output is correct
3	Correct	4 ms	8172 KB	Output is correct
4	Correct	4 ms	8192 KB	Output is correct
5	Correct	6 ms	8172 KB	Output is correct
6	Correct	5 ms	8172 KB	Output is correct
7	Correct	4 ms	8172 KB	Output is correct
8	Correct	4 ms	8172 KB	Output is correct
9	Correct	4 ms	8172 KB	Output is correct
10	Correct	5 ms	8172 KB	Output is correct
11	Correct	5 ms	8172 KB	Output is correct
12	Correct	4 ms	8172 KB	Output is correct
13	Correct	4 ms	8172 KB	Output is correct
14	Correct	5 ms	8172 KB	Output is correct
15	Correct	4 ms	8172 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8172 KB	Output is correct
2	Correct	4 ms	8172 KB	Output is correct
3	Correct	4 ms	8172 KB	Output is correct
4	Correct	4 ms	8192 KB	Output is correct
5	Correct	6 ms	8172 KB	Output is correct
6	Correct	5 ms	8172 KB	Output is correct
7	Correct	4 ms	8172 KB	Output is correct
8	Correct	4 ms	8172 KB	Output is correct
9	Correct	4 ms	8172 KB	Output is correct
10	Correct	5 ms	8172 KB	Output is correct
11	Correct	5 ms	8172 KB	Output is correct
12	Correct	4 ms	8172 KB	Output is correct
13	Correct	4 ms	8172 KB	Output is correct
14	Correct	5 ms	8172 KB	Output is correct
15	Correct	4 ms	8172 KB	Output is correct
16	Correct	4 ms	8172 KB	Output is correct
17	Correct	4 ms	8172 KB	Output is correct
18	Correct	4 ms	8192 KB	Output is correct
19	Correct	5 ms	8172 KB	Output is correct
20	Correct	5 ms	8172 KB	Output is correct
21	Correct	4 ms	8172 KB	Output is correct
22	Correct	5 ms	8172 KB	Output is correct
23	Correct	4 ms	8172 KB	Output is correct
24	Correct	5 ms	8172 KB	Output is correct
25	Correct	5 ms	8172 KB	Output is correct
26	Correct	5 ms	8172 KB	Output is correct
27	Correct	5 ms	8172 KB	Output is correct
28	Correct	5 ms	8172 KB	Output is correct
29	Correct	5 ms	8172 KB	Output is correct
30	Correct	5 ms	8172 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8172 KB	Output is correct
2	Correct	4 ms	8172 KB	Output is correct
3	Correct	4 ms	8172 KB	Output is correct
4	Correct	4 ms	8192 KB	Output is correct
5	Correct	6 ms	8172 KB	Output is correct
6	Correct	5 ms	8172 KB	Output is correct
7	Correct	4 ms	8172 KB	Output is correct
8	Correct	4 ms	8172 KB	Output is correct
9	Correct	4 ms	8172 KB	Output is correct
10	Correct	5 ms	8172 KB	Output is correct
11	Correct	5 ms	8172 KB	Output is correct
12	Correct	4 ms	8172 KB	Output is correct
13	Correct	4 ms	8172 KB	Output is correct
14	Correct	5 ms	8172 KB	Output is correct
15	Correct	4 ms	8172 KB	Output is correct
16	Correct	4 ms	8172 KB	Output is correct
17	Correct	4 ms	8172 KB	Output is correct
18	Correct	4 ms	8192 KB	Output is correct
19	Correct	5 ms	8172 KB	Output is correct
20	Correct	5 ms	8172 KB	Output is correct
21	Correct	4 ms	8172 KB	Output is correct
22	Correct	5 ms	8172 KB	Output is correct
23	Correct	4 ms	8172 KB	Output is correct
24	Correct	5 ms	8172 KB	Output is correct
25	Correct	5 ms	8172 KB	Output is correct
26	Correct	5 ms	8172 KB	Output is correct
27	Correct	5 ms	8172 KB	Output is correct
28	Correct	5 ms	8172 KB	Output is correct
29	Correct	5 ms	8172 KB	Output is correct
30	Correct	5 ms	8172 KB	Output is correct
31	Correct	5 ms	8300 KB	Output is correct
32	Correct	5 ms	8300 KB	Output is correct
33	Correct	5 ms	8172 KB	Output is correct
34	Correct	5 ms	8300 KB	Output is correct
35	Correct	5 ms	8300 KB	Output is correct
36	Correct	5 ms	8300 KB	Output is correct
37	Correct	5 ms	8300 KB	Output is correct
38	Correct	5 ms	8300 KB	Output is correct
39	Correct	5 ms	8300 KB	Output is correct
40	Correct	5 ms	8300 KB	Output is correct
41	Correct	5 ms	8300 KB	Output is correct
42	Correct	5 ms	8300 KB	Output is correct
43	Correct	5 ms	8300 KB	Output is correct
44	Correct	5 ms	8300 KB	Output is correct
45	Correct	5 ms	8300 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8172 KB	Output is correct
2	Correct	4 ms	8172 KB	Output is correct
3	Correct	4 ms	8172 KB	Output is correct
4	Correct	4 ms	8192 KB	Output is correct
5	Correct	6 ms	8172 KB	Output is correct
6	Correct	5 ms	8172 KB	Output is correct
7	Correct	4 ms	8172 KB	Output is correct
8	Correct	4 ms	8172 KB	Output is correct
9	Correct	4 ms	8172 KB	Output is correct
10	Correct	5 ms	8172 KB	Output is correct
11	Correct	5 ms	8172 KB	Output is correct
12	Correct	4 ms	8172 KB	Output is correct
13	Correct	4 ms	8172 KB	Output is correct
14	Correct	5 ms	8172 KB	Output is correct
15	Correct	4 ms	8172 KB	Output is correct
16	Correct	4 ms	8172 KB	Output is correct
17	Correct	4 ms	8172 KB	Output is correct
18	Correct	4 ms	8192 KB	Output is correct
19	Correct	5 ms	8172 KB	Output is correct
20	Correct	5 ms	8172 KB	Output is correct
21	Correct	4 ms	8172 KB	Output is correct
22	Correct	5 ms	8172 KB	Output is correct
23	Correct	4 ms	8172 KB	Output is correct
24	Correct	5 ms	8172 KB	Output is correct
25	Correct	5 ms	8172 KB	Output is correct
26	Correct	5 ms	8172 KB	Output is correct
27	Correct	5 ms	8172 KB	Output is correct
28	Correct	5 ms	8172 KB	Output is correct
29	Correct	5 ms	8172 KB	Output is correct
30	Correct	5 ms	8172 KB	Output is correct
31	Correct	5 ms	8300 KB	Output is correct
32	Correct	5 ms	8300 KB	Output is correct
33	Correct	5 ms	8172 KB	Output is correct
34	Correct	5 ms	8300 KB	Output is correct
35	Correct	5 ms	8300 KB	Output is correct
36	Correct	5 ms	8300 KB	Output is correct
37	Correct	5 ms	8300 KB	Output is correct
38	Correct	5 ms	8300 KB	Output is correct
39	Correct	5 ms	8300 KB	Output is correct
40	Correct	5 ms	8300 KB	Output is correct
41	Correct	5 ms	8300 KB	Output is correct
42	Correct	5 ms	8300 KB	Output is correct
43	Correct	5 ms	8300 KB	Output is correct
44	Correct	5 ms	8300 KB	Output is correct
45	Correct	5 ms	8300 KB	Output is correct
46	Correct	16 ms	11880 KB	Output is correct
47	Correct	19 ms	11880 KB	Output is correct
48	Correct	18 ms	9964 KB	Output is correct
49	Correct	20 ms	10860 KB	Output is correct
50	Correct	24 ms	11880 KB	Output is correct
51	Correct	22 ms	11880 KB	Output is correct
52	Correct	13 ms	10092 KB	Output is correct
53	Correct	10 ms	9328 KB	Output is correct
54	Correct	17 ms	11880 KB	Output is correct
55	Correct	21 ms	11880 KB	Output is correct
56	Correct	17 ms	11880 KB	Output is correct
57	Correct	18 ms	11900 KB	Output is correct
58	Correct	18 ms	11880 KB	Output is correct
59	Correct	18 ms	11880 KB	Output is correct
60	Correct	18 ms	11880 KB	Output is correct

Subtask #5
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	8172 KB	Output is correct
2	Correct	4 ms	8172 KB	Output is correct
3	Correct	4 ms	8172 KB	Output is correct
4	Correct	4 ms	8192 KB	Output is correct
5	Correct	6 ms	8172 KB	Output is correct
6	Correct	5 ms	8172 KB	Output is correct
7	Correct	4 ms	8172 KB	Output is correct
8	Correct	4 ms	8172 KB	Output is correct
9	Correct	4 ms	8172 KB	Output is correct
10	Correct	5 ms	8172 KB	Output is correct
11	Correct	5 ms	8172 KB	Output is correct
12	Correct	4 ms	8172 KB	Output is correct
13	Correct	4 ms	8172 KB	Output is correct
14	Correct	5 ms	8172 KB	Output is correct
15	Correct	4 ms	8172 KB	Output is correct
16	Correct	4 ms	8172 KB	Output is correct
17	Correct	4 ms	8172 KB	Output is correct
18	Correct	4 ms	8192 KB	Output is correct
19	Correct	5 ms	8172 KB	Output is correct
20	Correct	5 ms	8172 KB	Output is correct
21	Correct	4 ms	8172 KB	Output is correct
22	Correct	5 ms	8172 KB	Output is correct
23	Correct	4 ms	8172 KB	Output is correct
24	Correct	5 ms	8172 KB	Output is correct
25	Correct	5 ms	8172 KB	Output is correct
26	Correct	5 ms	8172 KB	Output is correct
27	Correct	5 ms	8172 KB	Output is correct
28	Correct	5 ms	8172 KB	Output is correct
29	Correct	5 ms	8172 KB	Output is correct
30	Correct	5 ms	8172 KB	Output is correct
31	Correct	5 ms	8300 KB	Output is correct
32	Correct	5 ms	8300 KB	Output is correct
33	Correct	5 ms	8172 KB	Output is correct
34	Correct	5 ms	8300 KB	Output is correct
35	Correct	5 ms	8300 KB	Output is correct
36	Correct	5 ms	8300 KB	Output is correct
37	Correct	5 ms	8300 KB	Output is correct
38	Correct	5 ms	8300 KB	Output is correct
39	Correct	5 ms	8300 KB	Output is correct
40	Correct	5 ms	8300 KB	Output is correct
41	Correct	5 ms	8300 KB	Output is correct
42	Correct	5 ms	8300 KB	Output is correct
43	Correct	5 ms	8300 KB	Output is correct
44	Correct	5 ms	8300 KB	Output is correct
45	Correct	5 ms	8300 KB	Output is correct
46	Correct	16 ms	11880 KB	Output is correct
47	Correct	19 ms	11880 KB	Output is correct
48	Correct	18 ms	9964 KB	Output is correct
49	Correct	20 ms	10860 KB	Output is correct
50	Correct	24 ms	11880 KB	Output is correct
51	Correct	22 ms	11880 KB	Output is correct
52	Correct	13 ms	10092 KB	Output is correct
53	Correct	10 ms	9328 KB	Output is correct
54	Correct	17 ms	11880 KB	Output is correct
55	Correct	21 ms	11880 KB	Output is correct
56	Correct	17 ms	11880 KB	Output is correct
57	Correct	18 ms	11900 KB	Output is correct
58	Correct	18 ms	11880 KB	Output is correct
59	Correct	18 ms	11880 KB	Output is correct
60	Correct	18 ms	11880 KB	Output is correct
61	Correct	65 ms	24288 KB	Output is correct
62	Correct	72 ms	24308 KB	Output is correct
63	Correct	77 ms	24288 KB	Output is correct
64	Correct	92 ms	18200 KB	Output is correct
65	Correct	89 ms	24288 KB	Output is correct
66	Correct	115 ms	24288 KB	Output is correct
67	Correct	79 ms	22752 KB	Output is correct
68	Correct	41 ms	15588 KB	Output is correct
69	Correct	70 ms	24288 KB	Output is correct
70	Correct	96 ms	24416 KB	Output is correct
71	Correct	70 ms	24308 KB	Output is correct
72	Correct	79 ms	24288 KB	Output is correct
73	Correct	81 ms	24416 KB	Output is correct
74	Correct	76 ms	24288 KB	Output is correct
75	Correct	85 ms	24288 KB	Output is correct

답안 #345632

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 36.0 / 36.0

Subtask #5 27.0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
36.0 / 36.0

Subtask #5
27.0 / 27.0