답안 #328465

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
328465	2020-11-16T16:59:32 Z	ryansee	Bigger segments (IZhO19_segments)	C++14	37 / 100	231 ms	117560 KB

segments

#include "bits/stdc++.h"
using namespace std;

#define FAST ios_base::sync_with_stdio(false); cin.tie(0);
#define pb push_back
#define eb emplace_back
#define ins insert
#define f first
#define s second
#define cbr cerr<<"hi\n"
#define mmst(x, v) memset((x), v, sizeof ((x)))
#define siz(x) ll(x.size())
#define all(x) (x).begin(), (x).end()
#define lbd(x,y) (lower_bound(all(x),y)-x.begin())
#define ubd(x,y) (upper_bound(all(x),y)-x.begin())
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());    //can be used by calling rng() or shuffle(A, A+n, rng)
inline long long rand(long long x, long long y) { return rng() % (y+1-x) + x; } //inclusivesss
string inline to_string(char c) {string s(1,c);return s;} template<typename T> inline T gcd(T a,T b){ return a==0?llabs(b):gcd(b%a,a); }

using ll=long long; 
using ld=long double;
#define FOR(i,s,e) for(ll i=s;i<=ll(e);++i)
#define DEC(i,s,e) for(ll i=s;i>=ll(e);--i)
using pi=pair<ll,ll>; using spi=pair<ll,pi>; using dpi=pair<pi,pi>; 

long long LLINF = 1e18;
int INF = 1e9+1e6;
#define MAXN (3006)
ll dp[MAXN][MAXN], n, A[MAXN], ans, mx[MAXN][MAXN];
int main() {
	FAST
	cin>>n;
	FOR(i,1,n) cin>>A[i];
	FOR(i,1,n) A[i] += A[i-1];
	for(auto&i:mx)for(auto&j:i)j=-INF;
	FOR(i,1,n) {
		FOR(j,1,i) {
			mx[i][j] = max(mx[i][j],mx[i-1][j]);
			dp[i][j] = max((ll)(j == 1 ? 1 : -INF), mx[i][j-1]+1);
			// FOR(k,1,j-1) if(A[i] >= 2 * A[j-1] - A[k-1]) {
				// dp[i][j] = max(dp[i][j], dp[j-1][k] + 1);
			// }
			ans=max(ans,dp[i][j]);
			ll more = lower_bound(A+1,A+n+1,2*A[i]-A[j-1]) - A;
			mx[more][i]=max(mx[more][i], dp[i][j]);
		}
	}
	cout<<ans<<'\n';
}

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	71148 KB	Output is correct
2	Correct	41 ms	71148 KB	Output is correct
3	Correct	42 ms	71148 KB	Output is correct
4	Correct	41 ms	71148 KB	Output is correct
5	Correct	41 ms	71148 KB	Output is correct
6	Correct	42 ms	71148 KB	Output is correct
7	Correct	41 ms	71148 KB	Output is correct
8	Correct	41 ms	71148 KB	Output is correct
9	Correct	41 ms	71148 KB	Output is correct
10	Correct	41 ms	71148 KB	Output is correct
11	Correct	41 ms	71156 KB	Output is correct
12	Correct	41 ms	71148 KB	Output is correct
13	Correct	41 ms	71148 KB	Output is correct
14	Correct	43 ms	71148 KB	Output is correct
15	Correct	44 ms	71276 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	71148 KB	Output is correct
2	Correct	41 ms	71148 KB	Output is correct
3	Correct	42 ms	71148 KB	Output is correct
4	Correct	41 ms	71148 KB	Output is correct
5	Correct	41 ms	71148 KB	Output is correct
6	Correct	42 ms	71148 KB	Output is correct
7	Correct	41 ms	71148 KB	Output is correct
8	Correct	41 ms	71148 KB	Output is correct
9	Correct	41 ms	71148 KB	Output is correct
10	Correct	41 ms	71148 KB	Output is correct
11	Correct	41 ms	71156 KB	Output is correct
12	Correct	41 ms	71148 KB	Output is correct
13	Correct	41 ms	71148 KB	Output is correct
14	Correct	43 ms	71148 KB	Output is correct
15	Correct	44 ms	71276 KB	Output is correct
16	Correct	48 ms	74144 KB	Output is correct
17	Correct	46 ms	74092 KB	Output is correct
18	Correct	47 ms	74104 KB	Output is correct
19	Correct	46 ms	74112 KB	Output is correct
20	Correct	47 ms	74092 KB	Output is correct
21	Correct	47 ms	74092 KB	Output is correct
22	Correct	45 ms	73324 KB	Output is correct
23	Correct	43 ms	72684 KB	Output is correct
24	Correct	46 ms	74112 KB	Output is correct
25	Correct	46 ms	74092 KB	Output is correct
26	Correct	46 ms	74112 KB	Output is correct
27	Correct	45 ms	74112 KB	Output is correct
28	Correct	46 ms	74092 KB	Output is correct
29	Correct	46 ms	74092 KB	Output is correct
30	Correct	47 ms	74092 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	71148 KB	Output is correct
2	Correct	41 ms	71148 KB	Output is correct
3	Correct	42 ms	71148 KB	Output is correct
4	Correct	41 ms	71148 KB	Output is correct
5	Correct	41 ms	71148 KB	Output is correct
6	Correct	42 ms	71148 KB	Output is correct
7	Correct	41 ms	71148 KB	Output is correct
8	Correct	41 ms	71148 KB	Output is correct
9	Correct	41 ms	71148 KB	Output is correct
10	Correct	41 ms	71148 KB	Output is correct
11	Correct	41 ms	71156 KB	Output is correct
12	Correct	41 ms	71148 KB	Output is correct
13	Correct	41 ms	71148 KB	Output is correct
14	Correct	43 ms	71148 KB	Output is correct
15	Correct	44 ms	71276 KB	Output is correct
16	Correct	48 ms	74144 KB	Output is correct
17	Correct	46 ms	74092 KB	Output is correct
18	Correct	47 ms	74104 KB	Output is correct
19	Correct	46 ms	74112 KB	Output is correct
20	Correct	47 ms	74092 KB	Output is correct
21	Correct	47 ms	74092 KB	Output is correct
22	Correct	45 ms	73324 KB	Output is correct
23	Correct	43 ms	72684 KB	Output is correct
24	Correct	46 ms	74112 KB	Output is correct
25	Correct	46 ms	74092 KB	Output is correct
26	Correct	46 ms	74112 KB	Output is correct
27	Correct	45 ms	74112 KB	Output is correct
28	Correct	46 ms	74092 KB	Output is correct
29	Correct	46 ms	74092 KB	Output is correct
30	Correct	47 ms	74092 KB	Output is correct
31	Correct	227 ms	117400 KB	Output is correct
32	Correct	176 ms	117356 KB	Output is correct
33	Correct	201 ms	117484 KB	Output is correct
34	Correct	185 ms	117356 KB	Output is correct
35	Correct	224 ms	117356 KB	Output is correct
36	Correct	231 ms	117560 KB	Output is correct
37	Correct	182 ms	105708 KB	Output is correct
38	Correct	122 ms	94828 KB	Output is correct
39	Correct	224 ms	117356 KB	Output is correct
40	Correct	231 ms	117356 KB	Output is correct
41	Correct	193 ms	117356 KB	Output is correct
42	Correct	191 ms	117356 KB	Output is correct
43	Correct	197 ms	117484 KB	Output is correct
44	Correct	208 ms	117372 KB	Output is correct
45	Correct	205 ms	117356 KB	Output is correct

Subtask #4
0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	71148 KB	Output is correct
2	Correct	41 ms	71148 KB	Output is correct
3	Correct	42 ms	71148 KB	Output is correct
4	Correct	41 ms	71148 KB	Output is correct
5	Correct	41 ms	71148 KB	Output is correct
6	Correct	42 ms	71148 KB	Output is correct
7	Correct	41 ms	71148 KB	Output is correct
8	Correct	41 ms	71148 KB	Output is correct
9	Correct	41 ms	71148 KB	Output is correct
10	Correct	41 ms	71148 KB	Output is correct
11	Correct	41 ms	71156 KB	Output is correct
12	Correct	41 ms	71148 KB	Output is correct
13	Correct	41 ms	71148 KB	Output is correct
14	Correct	43 ms	71148 KB	Output is correct
15	Correct	44 ms	71276 KB	Output is correct
16	Correct	48 ms	74144 KB	Output is correct
17	Correct	46 ms	74092 KB	Output is correct
18	Correct	47 ms	74104 KB	Output is correct
19	Correct	46 ms	74112 KB	Output is correct
20	Correct	47 ms	74092 KB	Output is correct
21	Correct	47 ms	74092 KB	Output is correct
22	Correct	45 ms	73324 KB	Output is correct
23	Correct	43 ms	72684 KB	Output is correct
24	Correct	46 ms	74112 KB	Output is correct
25	Correct	46 ms	74092 KB	Output is correct
26	Correct	46 ms	74112 KB	Output is correct
27	Correct	45 ms	74112 KB	Output is correct
28	Correct	46 ms	74092 KB	Output is correct
29	Correct	46 ms	74092 KB	Output is correct
30	Correct	47 ms	74092 KB	Output is correct
31	Correct	227 ms	117400 KB	Output is correct
32	Correct	176 ms	117356 KB	Output is correct
33	Correct	201 ms	117484 KB	Output is correct
34	Correct	185 ms	117356 KB	Output is correct
35	Correct	224 ms	117356 KB	Output is correct
36	Correct	231 ms	117560 KB	Output is correct
37	Correct	182 ms	105708 KB	Output is correct
38	Correct	122 ms	94828 KB	Output is correct
39	Correct	224 ms	117356 KB	Output is correct
40	Correct	231 ms	117356 KB	Output is correct
41	Correct	193 ms	117356 KB	Output is correct
42	Correct	191 ms	117356 KB	Output is correct
43	Correct	197 ms	117484 KB	Output is correct
44	Correct	208 ms	117372 KB	Output is correct
45	Correct	205 ms	117356 KB	Output is correct
46	Correct	43 ms	72428 KB	Output is correct
47	Incorrect	146 ms	99180 KB	Output isn't correct
48	Halted	0 ms	0 KB	-

Subtask #5
0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	71148 KB	Output is correct
2	Correct	41 ms	71148 KB	Output is correct
3	Correct	42 ms	71148 KB	Output is correct
4	Correct	41 ms	71148 KB	Output is correct
5	Correct	41 ms	71148 KB	Output is correct
6	Correct	42 ms	71148 KB	Output is correct
7	Correct	41 ms	71148 KB	Output is correct
8	Correct	41 ms	71148 KB	Output is correct
9	Correct	41 ms	71148 KB	Output is correct
10	Correct	41 ms	71148 KB	Output is correct
11	Correct	41 ms	71156 KB	Output is correct
12	Correct	41 ms	71148 KB	Output is correct
13	Correct	41 ms	71148 KB	Output is correct
14	Correct	43 ms	71148 KB	Output is correct
15	Correct	44 ms	71276 KB	Output is correct
16	Correct	48 ms	74144 KB	Output is correct
17	Correct	46 ms	74092 KB	Output is correct
18	Correct	47 ms	74104 KB	Output is correct
19	Correct	46 ms	74112 KB	Output is correct
20	Correct	47 ms	74092 KB	Output is correct
21	Correct	47 ms	74092 KB	Output is correct
22	Correct	45 ms	73324 KB	Output is correct
23	Correct	43 ms	72684 KB	Output is correct
24	Correct	46 ms	74112 KB	Output is correct
25	Correct	46 ms	74092 KB	Output is correct
26	Correct	46 ms	74112 KB	Output is correct
27	Correct	45 ms	74112 KB	Output is correct
28	Correct	46 ms	74092 KB	Output is correct
29	Correct	46 ms	74092 KB	Output is correct
30	Correct	47 ms	74092 KB	Output is correct
31	Correct	227 ms	117400 KB	Output is correct
32	Correct	176 ms	117356 KB	Output is correct
33	Correct	201 ms	117484 KB	Output is correct
34	Correct	185 ms	117356 KB	Output is correct
35	Correct	224 ms	117356 KB	Output is correct
36	Correct	231 ms	117560 KB	Output is correct
37	Correct	182 ms	105708 KB	Output is correct
38	Correct	122 ms	94828 KB	Output is correct
39	Correct	224 ms	117356 KB	Output is correct
40	Correct	231 ms	117356 KB	Output is correct
41	Correct	193 ms	117356 KB	Output is correct
42	Correct	191 ms	117356 KB	Output is correct
43	Correct	197 ms	117484 KB	Output is correct
44	Correct	208 ms	117372 KB	Output is correct
45	Correct	205 ms	117356 KB	Output is correct
46	Correct	43 ms	72428 KB	Output is correct
47	Incorrect	146 ms	99180 KB	Output isn't correct
48	Halted	0 ms	0 KB	-

답안 #328465

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 0 / 36.0

Subtask #5 0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
0 / 36.0

Subtask #5
0 / 27.0