답안 #556369

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
556369	2022-05-03T03:42:50 Z	ngpin04	Bigger segments (IZhO19_segments)	C++14	100 / 100	384 ms	253044 KB

segments

#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define getbit(x, i) (x >> i) & 1
#define TASK ""
#define ALL(x) (x).begin(), (x).end() 
using namespace std;
template <typename T1, typename T2> bool mini(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maxi(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}
const int N = 5e5 + 5; 
const int oo = 1e9;
const long long ooo = 1e18;
const int mod = 1e9 + 7; // 998244353;
const long double pi = acos(-1);

pair <int, int> dp[N];
pair <int, int> val[60 * N];

long long s[N];

int ptr[60 * N][2];
int a[N];
int n,cnt;

void add(long long x, pair <int, int> v) {
	int cur = 0;
	for (int i = 59; i >= 0; i--) {
		int &p = ptr[cur][getbit(x, i)];
		if (!p)
			p = ++cnt;
		cur = p;
		maxi(val[cur], v);
	} 
}

pair <int, int> getmax(long long x) {
	int cur = 0;
	pair <int, int> res = mp(0, 0);
	for (int i = 59; i >= 0; i--) {
		int d = getbit(x, i);
		if (d == 1)
			maxi(res, val[ptr[cur][d ^ 1]]);
		cur = ptr[cur][d];
		if (cur == 0)
			break;
	}
	maxi(res, val[cur]);
	return res;
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	#ifdef ONLINE_JUDGE
	// freopen(TASK".inp","r",stdin);
	// freopen(TASK".out","w",stdout);
	#endif
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		s[i] = s[i - 1] + a[i];
	}

	add(0, mp(0, 0));
	for (int i = 1; i <= n; i++) {
		long long tot = 0;
		pair <int, int> pir = getmax(s[i]);
		pir.fi++;
		dp[i] = pir;
		int j = pir.se;

		// cerr << i << " " << j << "\n";

		add(s[i] - s[j] + s[i], mp(dp[i].fi, i));
	}

	cout << dp[n].fi;
	return 0;
}

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:71:13: warning: unused variable 'tot' [-Wunused-variable]
   71 |   long long tot = 0;
      |             ^~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 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	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	328 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	328 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 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	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	328 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	328 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	456 KB	Output is correct
18	Correct	1 ms	596 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	596 KB	Output is correct
21	Correct	1 ms	596 KB	Output is correct
22	Correct	1 ms	468 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	324 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	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 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	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	328 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	328 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	456 KB	Output is correct
18	Correct	1 ms	596 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	596 KB	Output is correct
21	Correct	1 ms	596 KB	Output is correct
22	Correct	1 ms	468 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	324 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	2 ms	1108 KB	Output is correct
32	Correct	2 ms	1364 KB	Output is correct
33	Correct	2 ms	1620 KB	Output is correct
34	Correct	2 ms	1492 KB	Output is correct
35	Correct	3 ms	1748 KB	Output is correct
36	Correct	2 ms	1876 KB	Output is correct
37	Correct	3 ms	1624 KB	Output is correct
38	Correct	2 ms	1364 KB	Output is correct
39	Correct	2 ms	596 KB	Output is correct
40	Correct	3 ms	1784 KB	Output is correct
41	Correct	2 ms	596 KB	Output is correct
42	Correct	3 ms	724 KB	Output is correct
43	Correct	2 ms	460 KB	Output is correct
44	Correct	2 ms	984 KB	Output is correct
45	Correct	2 ms	980 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 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	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	328 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	328 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	456 KB	Output is correct
18	Correct	1 ms	596 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	596 KB	Output is correct
21	Correct	1 ms	596 KB	Output is correct
22	Correct	1 ms	468 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	324 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	2 ms	1108 KB	Output is correct
32	Correct	2 ms	1364 KB	Output is correct
33	Correct	2 ms	1620 KB	Output is correct
34	Correct	2 ms	1492 KB	Output is correct
35	Correct	3 ms	1748 KB	Output is correct
36	Correct	2 ms	1876 KB	Output is correct
37	Correct	3 ms	1624 KB	Output is correct
38	Correct	2 ms	1364 KB	Output is correct
39	Correct	2 ms	596 KB	Output is correct
40	Correct	3 ms	1784 KB	Output is correct
41	Correct	2 ms	596 KB	Output is correct
42	Correct	3 ms	724 KB	Output is correct
43	Correct	2 ms	460 KB	Output is correct
44	Correct	2 ms	984 KB	Output is correct
45	Correct	2 ms	980 KB	Output is correct
46	Correct	42 ms	19696 KB	Output is correct
47	Correct	52 ms	22248 KB	Output is correct
48	Correct	72 ms	43224 KB	Output is correct
49	Correct	71 ms	46504 KB	Output is correct
50	Correct	77 ms	51196 KB	Output is correct
51	Correct	65 ms	50480 KB	Output is correct
52	Correct	33 ms	25292 KB	Output is correct
53	Correct	20 ms	15336 KB	Output is correct
54	Correct	50 ms	8172 KB	Output is correct
55	Correct	70 ms	48832 KB	Output is correct
56	Correct	62 ms	23240 KB	Output is correct
57	Correct	55 ms	19404 KB	Output is correct
58	Correct	58 ms	21320 KB	Output is correct
59	Correct	63 ms	29608 KB	Output is correct
60	Correct	60 ms	29524 KB	Output is correct

Subtask #5
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 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	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	328 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	328 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	456 KB	Output is correct
18	Correct	1 ms	596 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	596 KB	Output is correct
21	Correct	1 ms	596 KB	Output is correct
22	Correct	1 ms	468 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	324 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	2 ms	1108 KB	Output is correct
32	Correct	2 ms	1364 KB	Output is correct
33	Correct	2 ms	1620 KB	Output is correct
34	Correct	2 ms	1492 KB	Output is correct
35	Correct	3 ms	1748 KB	Output is correct
36	Correct	2 ms	1876 KB	Output is correct
37	Correct	3 ms	1624 KB	Output is correct
38	Correct	2 ms	1364 KB	Output is correct
39	Correct	2 ms	596 KB	Output is correct
40	Correct	3 ms	1784 KB	Output is correct
41	Correct	2 ms	596 KB	Output is correct
42	Correct	3 ms	724 KB	Output is correct
43	Correct	2 ms	460 KB	Output is correct
44	Correct	2 ms	984 KB	Output is correct
45	Correct	2 ms	980 KB	Output is correct
46	Correct	42 ms	19696 KB	Output is correct
47	Correct	52 ms	22248 KB	Output is correct
48	Correct	72 ms	43224 KB	Output is correct
49	Correct	71 ms	46504 KB	Output is correct
50	Correct	77 ms	51196 KB	Output is correct
51	Correct	65 ms	50480 KB	Output is correct
52	Correct	33 ms	25292 KB	Output is correct
53	Correct	20 ms	15336 KB	Output is correct
54	Correct	50 ms	8172 KB	Output is correct
55	Correct	70 ms	48832 KB	Output is correct
56	Correct	62 ms	23240 KB	Output is correct
57	Correct	55 ms	19404 KB	Output is correct
58	Correct	58 ms	21320 KB	Output is correct
59	Correct	63 ms	29608 KB	Output is correct
60	Correct	60 ms	29524 KB	Output is correct
61	Correct	217 ms	91364 KB	Output is correct
62	Correct	233 ms	88256 KB	Output is correct
63	Correct	253 ms	110348 KB	Output is correct
64	Correct	346 ms	238916 KB	Output is correct
65	Correct	384 ms	253044 KB	Output is correct
66	Correct	319 ms	250796 KB	Output is correct
67	Correct	249 ms	200720 KB	Output is correct
68	Correct	136 ms	100516 KB	Output is correct
69	Correct	247 ms	39624 KB	Output is correct
70	Correct	357 ms	245464 KB	Output is correct
71	Correct	268 ms	85624 KB	Output is correct
72	Correct	272 ms	109652 KB	Output is correct
73	Correct	314 ms	144292 KB	Output is correct
74	Correct	316 ms	165464 KB	Output is correct
75	Correct	323 ms	165660 KB	Output is correct

답안 #556369

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