oj.uz

Submission #328465

# Submission time Handle Problem Language Result Execution time Memory
328465 2020-11-16T16:59:32 Z ryansee Bigger segments (IZhO19_segments) C++14
37 / 100
 231 ms 117560 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 -