답안 #497748

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
497748	2021-12-23T17:33:53 Z	vinnipuh01	Bigger segments (IZhO19_segments)	C++17	100 / 100	210 ms	16016 KB

segments

#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
#include <stack>
#include <string>
#include <map>
#include <queue>
#define int long long
 
using namespace std;
 
const long long oo = 1000000000000000000;
 
long long sum, ans = 0, mx = 0, mn = 1000000000, num, pos;
 
 
/*
    ViHHiPuh
 
   (( `'-""``""-'` ))
     )-__-_.._-__-(
   / --- (o _ o) --- \
   \ .-* ( .0. ) *-. /
   _'-. ,_ '=' _, .-'_
  / `;#'#'# - #'#'#;` \
 \_)) -----'#'----- ((_/
      # --------- #
  '# ------- ------ #'
  /..-'# ------- #'-.\
  _\...-\'# -- #'/-.../_
  ((____)- '#' -(____))
 
 
    cout << fixed << setprecision(6) << x;
 
 
    freopen ( "sum.in", "r", stdin )
*/

pair<int, int> dp[ 500001 ];
int p[ 500001 ];

main () {
	int n;
	cin >> n;
	int a[ n + 1 ];
	for ( int i = 1; i <= n; i ++ ) {
		cin >> a[ i ];
		p[ i ] = p[ i - 1 ] + a[ i ];
	}
	int l, r, mid;
	dp[ 1 ] = {1, 1};
	for ( int i = 1; i <= n; i ++ ) {
		l = i;
		r = n;
		while ( r > l ) {
			mid = ( l + r ) / 2;
			if ( p[ mid ] >= 2 * p[ i ] - p[ dp[ i ].second - 1 ] )
				r = mid;
			else
				l = mid + 1;
		}
//		cout << i << " " << l << "\n";
		dp[ i + 1 ] = max( dp[ i + 1 ], { dp[ i ].first, dp[ i ].second } );
		if ( p[ l ] < 2 * p[ i ] - p[ dp[ i ].second - 1 ] )
			continue;
		dp[ l ] = max( dp[ l ], { dp[ i ].first + 1, i + 1 } );
	}
	cout << dp[ n ].first;
}

// p[mid] - p[ i - 1 ] >= p[ i - 1 ] - p[ dp[ i - 1 ].second ]

Compilation message

segments.cpp:47:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   47 | main () {
      | ^~~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	0 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	0 ms	204 KB	Output is correct
23	Correct	0 ms	204 KB	Output is correct
24	Correct	0 ms	204 KB	Output is correct
25	Correct	0 ms	204 KB	Output is correct
26	Correct	0 ms	204 KB	Output is correct
27	Correct	0 ms	204 KB	Output is correct
28	Correct	0 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	0 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	0 ms	204 KB	Output is correct
23	Correct	0 ms	204 KB	Output is correct
24	Correct	0 ms	204 KB	Output is correct
25	Correct	0 ms	204 KB	Output is correct
26	Correct	0 ms	204 KB	Output is correct
27	Correct	0 ms	204 KB	Output is correct
28	Correct	0 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	1 ms	332 KB	Output is correct
32	Correct	2 ms	332 KB	Output is correct
33	Correct	2 ms	332 KB	Output is correct
34	Correct	2 ms	332 KB	Output is correct
35	Correct	2 ms	332 KB	Output is correct
36	Correct	2 ms	332 KB	Output is correct
37	Correct	1 ms	332 KB	Output is correct
38	Correct	1 ms	332 KB	Output is correct
39	Correct	1 ms	332 KB	Output is correct
40	Correct	1 ms	332 KB	Output is correct
41	Correct	1 ms	332 KB	Output is correct
42	Correct	1 ms	332 KB	Output is correct
43	Correct	1 ms	332 KB	Output is correct
44	Correct	1 ms	332 KB	Output is correct
45	Correct	1 ms	332 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	0 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	0 ms	204 KB	Output is correct
23	Correct	0 ms	204 KB	Output is correct
24	Correct	0 ms	204 KB	Output is correct
25	Correct	0 ms	204 KB	Output is correct
26	Correct	0 ms	204 KB	Output is correct
27	Correct	0 ms	204 KB	Output is correct
28	Correct	0 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	1 ms	332 KB	Output is correct
32	Correct	2 ms	332 KB	Output is correct
33	Correct	2 ms	332 KB	Output is correct
34	Correct	2 ms	332 KB	Output is correct
35	Correct	2 ms	332 KB	Output is correct
36	Correct	2 ms	332 KB	Output is correct
37	Correct	1 ms	332 KB	Output is correct
38	Correct	1 ms	332 KB	Output is correct
39	Correct	1 ms	332 KB	Output is correct
40	Correct	1 ms	332 KB	Output is correct
41	Correct	1 ms	332 KB	Output is correct
42	Correct	1 ms	332 KB	Output is correct
43	Correct	1 ms	332 KB	Output is correct
44	Correct	1 ms	332 KB	Output is correct
45	Correct	1 ms	332 KB	Output is correct
46	Correct	24 ms	3320 KB	Output is correct
47	Correct	30 ms	3492 KB	Output is correct
48	Correct	37 ms	3392 KB	Output is correct
49	Correct	37 ms	3412 KB	Output is correct
50	Correct	40 ms	3408 KB	Output is correct
51	Correct	40 ms	3352 KB	Output is correct
52	Correct	21 ms	1804 KB	Output is correct
53	Correct	12 ms	1188 KB	Output is correct
54	Correct	19 ms	3404 KB	Output is correct
55	Correct	40 ms	3328 KB	Output is correct
56	Correct	26 ms	3364 KB	Output is correct
57	Correct	24 ms	3408 KB	Output is correct
58	Correct	24 ms	3376 KB	Output is correct
59	Correct	26 ms	3320 KB	Output is correct
60	Correct	27 ms	3404 KB	Output is correct

Subtask #5
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	0 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	204 KB	Output is correct
22	Correct	0 ms	204 KB	Output is correct
23	Correct	0 ms	204 KB	Output is correct
24	Correct	0 ms	204 KB	Output is correct
25	Correct	0 ms	204 KB	Output is correct
26	Correct	0 ms	204 KB	Output is correct
27	Correct	0 ms	204 KB	Output is correct
28	Correct	0 ms	204 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	1 ms	332 KB	Output is correct
32	Correct	2 ms	332 KB	Output is correct
33	Correct	2 ms	332 KB	Output is correct
34	Correct	2 ms	332 KB	Output is correct
35	Correct	2 ms	332 KB	Output is correct
36	Correct	2 ms	332 KB	Output is correct
37	Correct	1 ms	332 KB	Output is correct
38	Correct	1 ms	332 KB	Output is correct
39	Correct	1 ms	332 KB	Output is correct
40	Correct	1 ms	332 KB	Output is correct
41	Correct	1 ms	332 KB	Output is correct
42	Correct	1 ms	332 KB	Output is correct
43	Correct	1 ms	332 KB	Output is correct
44	Correct	1 ms	332 KB	Output is correct
45	Correct	1 ms	332 KB	Output is correct
46	Correct	24 ms	3320 KB	Output is correct
47	Correct	30 ms	3492 KB	Output is correct
48	Correct	37 ms	3392 KB	Output is correct
49	Correct	37 ms	3412 KB	Output is correct
50	Correct	40 ms	3408 KB	Output is correct
51	Correct	40 ms	3352 KB	Output is correct
52	Correct	21 ms	1804 KB	Output is correct
53	Correct	12 ms	1188 KB	Output is correct
54	Correct	19 ms	3404 KB	Output is correct
55	Correct	40 ms	3328 KB	Output is correct
56	Correct	26 ms	3364 KB	Output is correct
57	Correct	24 ms	3408 KB	Output is correct
58	Correct	24 ms	3376 KB	Output is correct
59	Correct	26 ms	3320 KB	Output is correct
60	Correct	27 ms	3404 KB	Output is correct
61	Correct	140 ms	15884 KB	Output is correct
62	Correct	138 ms	15844 KB	Output is correct
63	Correct	138 ms	15816 KB	Output is correct
64	Correct	191 ms	15908 KB	Output is correct
65	Correct	210 ms	15812 KB	Output is correct
66	Correct	201 ms	15904 KB	Output is correct
67	Correct	191 ms	12732 KB	Output is correct
68	Correct	84 ms	6504 KB	Output is correct
69	Correct	98 ms	15868 KB	Output is correct
70	Correct	191 ms	15852 KB	Output is correct
71	Correct	105 ms	15824 KB	Output is correct
72	Correct	131 ms	16016 KB	Output is correct
73	Correct	181 ms	15876 KB	Output is correct
74	Correct	150 ms	15824 KB	Output is correct
75	Correct	150 ms	15984 KB	Output is correct

답안 #497748

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