답안 #628709

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
628709	2022-08-13T15:45:44 Z	BackNoob	Bigger segments (IZhO19_segments)	C++14	100 / 100	137 ms	24708 KB

segments

#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define endl '\n'
#define MASK(i) (1LL << (i))
#define ull unsigned long long
#define ld long double
#define pb push_back
#define all(x) (x).begin() , (x).end()
#define BIT(x , i) ((x >> (i)) & 1)
#define TASK "task"
#define sz(s) (int) (s).size()
 
using namespace std;
const int mxN = 5e5 + 227;
const int inf = 1e9 + 277;
const int mod = 1e9 + 7;
const ll infll = 1e18 + 7;
const int base = 307;
const int LOG = 20;
 
template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}


struct FenwickTree{
	int n;
	vector<int> bit;
	FenwickTree(){}
	FenwickTree(int _n) {
		n = _n;
		bit.resize(n + 7, -inf);
	}

	void update(int pos, int val)
	{
		for(; pos <= n; pos += pos & -pos) maximize(bit[pos], val);
	}
	int getmax(int pos)
	{
		int res = -inf;
		for(; pos > 0; pos -= pos & -pos) res = max(res, bit[pos]);
		return res;
	}

} ft;

 
int n;
int a[mxN];
ll pre[mxN];
pair<ll, int> dp[mxN];
vector<ll> val;

int getpos(ll x)
{
	return lower_bound(all(val), x) - val.begin() + 1;
}
 
void solve()
{
	cin >> n;
	for(int i = 1; i <= n; i++) cin >> a[i];

	for(int i = 1; i <= n; i++) pre[i] = pre[i - 1] + a[i];
	for(int i = 0; i <= n; i++) val.pb(pre[i]);
	sort(all(val));
	val.erase(unique(all(val)), val.end());

	ft = FenwickTree(sz(val));
	ft.update(getpos(pre[0]), 0);

	dp[0] = {0, 0};
	for(int i = 1; i <= n; i++) {
		
		int p = getpos(pre[i]);
		int j = ft.getmax(p);
		dp[i] = {pre[i] - pre[j], dp[j].se + 1};

		int pp = getpos(dp[i].fi + pre[i]);
		ft.update(pp, i);
	}

	cout << dp[n].se;
}
 
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

 
    int tc = 1;
    //cin >> tc;
    while(tc--) {
    	solve();
    }
    return 0;
}

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	0 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	0 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	0 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	0 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	1 ms	468 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	468 KB	Output is correct
34	Correct	2 ms	468 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	1 ms	468 KB	Output is correct
37	Correct	1 ms	468 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	1 ms	468 KB	Output is correct
40	Correct	1 ms	468 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	2 ms	468 KB	Output is correct
43	Correct	1 ms	468 KB	Output is correct
44	Correct	2 ms	468 KB	Output is correct
45	Correct	1 ms	468 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	0 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	0 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	1 ms	468 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	468 KB	Output is correct
34	Correct	2 ms	468 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	1 ms	468 KB	Output is correct
37	Correct	1 ms	468 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	1 ms	468 KB	Output is correct
40	Correct	1 ms	468 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	2 ms	468 KB	Output is correct
43	Correct	1 ms	468 KB	Output is correct
44	Correct	2 ms	468 KB	Output is correct
45	Correct	1 ms	468 KB	Output is correct
46	Correct	18 ms	4168 KB	Output is correct
47	Correct	23 ms	4684 KB	Output is correct
48	Correct	25 ms	5064 KB	Output is correct
49	Correct	28 ms	5160 KB	Output is correct
50	Correct	26 ms	5212 KB	Output is correct
51	Correct	27 ms	5192 KB	Output is correct
52	Correct	13 ms	2776 KB	Output is correct
53	Correct	11 ms	1740 KB	Output is correct
54	Correct	22 ms	4424 KB	Output is correct
55	Correct	26 ms	5220 KB	Output is correct
56	Correct	22 ms	4696 KB	Output is correct
57	Correct	20 ms	4688 KB	Output is correct
58	Correct	21 ms	4700 KB	Output is correct
59	Correct	22 ms	4820 KB	Output is correct
60	Correct	23 ms	4820 KB	Output is correct

Subtask #5
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	0 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	0 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	1 ms	468 KB	Output is correct
32	Correct	1 ms	468 KB	Output is correct
33	Correct	1 ms	468 KB	Output is correct
34	Correct	2 ms	468 KB	Output is correct
35	Correct	1 ms	468 KB	Output is correct
36	Correct	1 ms	468 KB	Output is correct
37	Correct	1 ms	468 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	1 ms	468 KB	Output is correct
40	Correct	1 ms	468 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	2 ms	468 KB	Output is correct
43	Correct	1 ms	468 KB	Output is correct
44	Correct	2 ms	468 KB	Output is correct
45	Correct	1 ms	468 KB	Output is correct
46	Correct	18 ms	4168 KB	Output is correct
47	Correct	23 ms	4684 KB	Output is correct
48	Correct	25 ms	5064 KB	Output is correct
49	Correct	28 ms	5160 KB	Output is correct
50	Correct	26 ms	5212 KB	Output is correct
51	Correct	27 ms	5192 KB	Output is correct
52	Correct	13 ms	2776 KB	Output is correct
53	Correct	11 ms	1740 KB	Output is correct
54	Correct	22 ms	4424 KB	Output is correct
55	Correct	26 ms	5220 KB	Output is correct
56	Correct	22 ms	4696 KB	Output is correct
57	Correct	20 ms	4688 KB	Output is correct
58	Correct	21 ms	4700 KB	Output is correct
59	Correct	22 ms	4820 KB	Output is correct
60	Correct	23 ms	4820 KB	Output is correct
61	Correct	92 ms	21820 KB	Output is correct
62	Correct	98 ms	21792 KB	Output is correct
63	Correct	115 ms	22284 KB	Output is correct
64	Correct	130 ms	24384 KB	Output is correct
65	Correct	121 ms	24672 KB	Output is correct
66	Correct	135 ms	24692 KB	Output is correct
67	Correct	137 ms	19736 KB	Output is correct
68	Correct	56 ms	10048 KB	Output is correct
69	Correct	107 ms	20912 KB	Output is correct
70	Correct	133 ms	24708 KB	Output is correct
71	Correct	104 ms	21800 KB	Output is correct
72	Correct	102 ms	22136 KB	Output is correct
73	Correct	108 ms	22812 KB	Output is correct
74	Correct	112 ms	23220 KB	Output is correct
75	Correct	112 ms	23180 KB	Output is correct

답안 #628709

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