답안 #873893

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
873893	2023-11-16T02:33:17 Z	noiaint	Bigger segments (IZhO19_segments)	C++17	100 / 100	68 ms	16040 KB

segments

#include <bits/stdc++.h>

using namespace std;

#define file ""

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1LL << (x))
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;

template<class X, class Y> bool mini(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}

int n;
long long a[N];
int f[N], pos[N];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);

    cin >> n;
    for (int i = 1; i <= n; ++i) {
    	cin >> a[i];
    	a[i] += a[i - 1];
    }

    for (int i = 1; i <= n; ++i) {
    	pos[i] = max(pos[i - 1], pos[i]);
    	f[i] = f[pos[i]] + 1;
    	int l = i, r = n, nxt = 0;
    	while (l <= r) {
    		int mid = (l + r) / 2;
    		if (a[mid] - a[i] >= a[i] - a[pos[i]]) {
    			nxt = mid;
    			r = mid - 1;
    		} else l = mid + 1;
    	}
    	pos[nxt] = i;
    }

    cout << f[n];

    return 0;
}

/*
s[i] - s[j] >= s[j] - s[k] -> binary search
*/

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2516 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2516 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2500 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2516 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2540 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2512 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2648 KB	Output is correct
29	Correct	1 ms	2512 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2516 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2500 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2516 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2540 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2512 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2648 KB	Output is correct
29	Correct	1 ms	2512 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct
31	Correct	1 ms	2392 KB	Output is correct
32	Correct	1 ms	2544 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	1 ms	2396 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2396 KB	Output is correct
40	Correct	1 ms	2396 KB	Output is correct
41	Correct	1 ms	2396 KB	Output is correct
42	Correct	1 ms	2520 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2528 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2516 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2500 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2516 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2540 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2512 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2648 KB	Output is correct
29	Correct	1 ms	2512 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct
31	Correct	1 ms	2392 KB	Output is correct
32	Correct	1 ms	2544 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	1 ms	2396 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2396 KB	Output is correct
40	Correct	1 ms	2396 KB	Output is correct
41	Correct	1 ms	2396 KB	Output is correct
42	Correct	1 ms	2520 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2528 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct
46	Correct	8 ms	7772 KB	Output is correct
47	Correct	11 ms	9564 KB	Output is correct
48	Correct	11 ms	9820 KB	Output is correct
49	Correct	15 ms	10076 KB	Output is correct
50	Correct	11 ms	10076 KB	Output is correct
51	Correct	14 ms	10184 KB	Output is correct
52	Correct	6 ms	5196 KB	Output is correct
53	Correct	4 ms	2908 KB	Output is correct
54	Correct	11 ms	9308 KB	Output is correct
55	Correct	11 ms	10076 KB	Output is correct
56	Correct	8 ms	9560 KB	Output is correct
57	Correct	9 ms	9564 KB	Output is correct
58	Correct	9 ms	9564 KB	Output is correct
59	Correct	9 ms	9564 KB	Output is correct
60	Correct	9 ms	9800 KB	Output is correct

Subtask #5
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2516 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2500 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2516 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2540 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2512 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	1 ms	2648 KB	Output is correct
29	Correct	1 ms	2512 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct
31	Correct	1 ms	2392 KB	Output is correct
32	Correct	1 ms	2544 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	1 ms	2396 KB	Output is correct
35	Correct	1 ms	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2396 KB	Output is correct
40	Correct	1 ms	2396 KB	Output is correct
41	Correct	1 ms	2396 KB	Output is correct
42	Correct	1 ms	2520 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2528 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct
46	Correct	8 ms	7772 KB	Output is correct
47	Correct	11 ms	9564 KB	Output is correct
48	Correct	11 ms	9820 KB	Output is correct
49	Correct	15 ms	10076 KB	Output is correct
50	Correct	11 ms	10076 KB	Output is correct
51	Correct	14 ms	10184 KB	Output is correct
52	Correct	6 ms	5196 KB	Output is correct
53	Correct	4 ms	2908 KB	Output is correct
54	Correct	11 ms	9308 KB	Output is correct
55	Correct	11 ms	10076 KB	Output is correct
56	Correct	8 ms	9560 KB	Output is correct
57	Correct	9 ms	9564 KB	Output is correct
58	Correct	9 ms	9564 KB	Output is correct
59	Correct	9 ms	9564 KB	Output is correct
60	Correct	9 ms	9800 KB	Output is correct
61	Correct	50 ms	12848 KB	Output is correct
62	Correct	42 ms	13136 KB	Output is correct
63	Correct	53 ms	13392 KB	Output is correct
64	Correct	68 ms	15672 KB	Output is correct
65	Correct	48 ms	15940 KB	Output is correct
66	Correct	54 ms	16040 KB	Output is correct
67	Correct	46 ms	14932 KB	Output is correct
68	Correct	25 ms	10932 KB	Output is correct
69	Correct	39 ms	12116 KB	Output is correct
70	Correct	50 ms	15964 KB	Output is correct
71	Correct	50 ms	12996 KB	Output is correct
72	Correct	41 ms	13500 KB	Output is correct
73	Correct	43 ms	13656 KB	Output is correct
74	Correct	53 ms	14676 KB	Output is correct
75	Correct	44 ms	14496 KB	Output is correct

답안 #873893

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