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Submission #328494

# Submission time Handle Problem Language Result Execution time Memory
328494 2020-11-16T18:30:06 Z ryansee Bigger segments (IZhO19_segments) C++14
37 / 100
 80 ms 117484 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);
			ans=max(ans,dp[i][j]);
		}
		DEC(j,i,1){
			if(dp[i][j]<=0) continue;
			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]);
			break;
		}
	}
	cout<<ans<<'\n';
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 42 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 41 ms 71276 KB Output is correct
7 Correct 43 ms 71148 KB Output is correct
8 Correct 41 ms 71148 KB Output is correct
9 Correct 44 ms 71148 KB Output is correct
10 Correct 43 ms 71148 KB Output is correct
11 Correct 42 ms 71148 KB Output is correct
12 Correct 44 ms 71148 KB Output is correct
13 Correct 45 ms 71148 KB Output is correct
14 Correct 43 ms 71148 KB Output is correct
15 Correct 42 ms 71148 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 42 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 41 ms 71276 KB Output is correct
7 Correct 43 ms 71148 KB Output is correct
8 Correct 41 ms 71148 KB Output is correct
9 Correct 44 ms 71148 KB Output is correct
10 Correct 43 ms 71148 KB Output is correct
11 Correct 42 ms 71148 KB Output is correct
12 Correct 44 ms 71148 KB Output is correct
13 Correct 45 ms 71148 KB Output is correct
14 Correct 43 ms 71148 KB Output is correct
15 Correct 42 ms 71148 KB Output is correct
16 Correct 47 ms 74092 KB Output is correct
17 Correct 44 ms 74092 KB Output is correct
18 Correct 43 ms 74092 KB Output is correct
19 Correct 43 ms 74092 KB Output is correct
20 Correct 42 ms 74092 KB Output is correct
21 Correct 42 ms 74092 KB Output is correct
22 Correct 43 ms 73324 KB Output is correct
23 Correct 43 ms 72652 KB Output is correct
24 Correct 43 ms 74092 KB Output is correct
25 Correct 43 ms 74092 KB Output is correct
26 Correct 43 ms 74092 KB Output is correct
27 Correct 42 ms 74092 KB Output is correct
28 Correct 43 ms 74092 KB Output is correct
29 Correct 44 ms 74112 KB Output is correct
30 Correct 43 ms 74092 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 42 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 41 ms 71276 KB Output is correct
7 Correct 43 ms 71148 KB Output is correct
8 Correct 41 ms 71148 KB Output is correct
9 Correct 44 ms 71148 KB Output is correct
10 Correct 43 ms 71148 KB Output is correct
11 Correct 42 ms 71148 KB Output is correct
12 Correct 44 ms 71148 KB Output is correct
13 Correct 45 ms 71148 KB Output is correct
14 Correct 43 ms 71148 KB Output is correct
15 Correct 42 ms 71148 KB Output is correct
16 Correct 47 ms 74092 KB Output is correct
17 Correct 44 ms 74092 KB Output is correct
18 Correct 43 ms 74092 KB Output is correct
19 Correct 43 ms 74092 KB Output is correct
20 Correct 42 ms 74092 KB Output is correct
21 Correct 42 ms 74092 KB Output is correct
22 Correct 43 ms 73324 KB Output is correct
23 Correct 43 ms 72652 KB Output is correct
24 Correct 43 ms 74092 KB Output is correct
25 Correct 43 ms 74092 KB Output is correct
26 Correct 43 ms 74092 KB Output is correct
27 Correct 42 ms 74092 KB Output is correct
28 Correct 43 ms 74092 KB Output is correct
29 Correct 44 ms 74112 KB Output is correct
30 Correct 43 ms 74092 KB Output is correct
31 Correct 80 ms 117356 KB Output is correct
32 Correct 76 ms 117392 KB Output is correct
33 Correct 74 ms 117356 KB Output is correct
34 Correct 76 ms 117356 KB Output is correct
35 Correct 76 ms 117356 KB Output is correct
36 Correct 76 ms 117356 KB Output is correct
37 Correct 68 ms 105708 KB Output is correct
38 Correct 63 ms 94828 KB Output is correct
39 Correct 75 ms 117356 KB Output is correct
40 Correct 75 ms 117484 KB Output is correct
41 Correct 74 ms 117356 KB Output is correct
42 Correct 74 ms 117356 KB Output is correct
43 Correct 78 ms 117356 KB Output is correct
44 Correct 76 ms 117356 KB Output is correct
45 Correct 74 ms 117356 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 42 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 41 ms 71276 KB Output is correct
7 Correct 43 ms 71148 KB Output is correct
8 Correct 41 ms 71148 KB Output is correct
9 Correct 44 ms 71148 KB Output is correct
10 Correct 43 ms 71148 KB Output is correct
11 Correct 42 ms 71148 KB Output is correct
12 Correct 44 ms 71148 KB Output is correct
13 Correct 45 ms 71148 KB Output is correct
14 Correct 43 ms 71148 KB Output is correct
15 Correct 42 ms 71148 KB Output is correct
16 Correct 47 ms 74092 KB Output is correct
17 Correct 44 ms 74092 KB Output is correct
18 Correct 43 ms 74092 KB Output is correct
19 Correct 43 ms 74092 KB Output is correct
20 Correct 42 ms 74092 KB Output is correct
21 Correct 42 ms 74092 KB Output is correct
22 Correct 43 ms 73324 KB Output is correct
23 Correct 43 ms 72652 KB Output is correct
24 Correct 43 ms 74092 KB Output is correct
25 Correct 43 ms 74092 KB Output is correct
26 Correct 43 ms 74092 KB Output is correct
27 Correct 42 ms 74092 KB Output is correct
28 Correct 43 ms 74092 KB Output is correct
29 Correct 44 ms 74112 KB Output is correct
30 Correct 43 ms 74092 KB Output is correct
31 Correct 80 ms 117356 KB Output is correct
32 Correct 76 ms 117392 KB Output is correct
33 Correct 74 ms 117356 KB Output is correct
34 Correct 76 ms 117356 KB Output is correct
35 Correct 76 ms 117356 KB Output is correct
36 Correct 76 ms 117356 KB Output is correct
37 Correct 68 ms 105708 KB Output is correct
38 Correct 63 ms 94828 KB Output is correct
39 Correct 75 ms 117356 KB Output is correct
40 Correct 75 ms 117484 KB Output is correct
41 Correct 74 ms 117356 KB Output is correct
42 Correct 74 ms 117356 KB Output is correct
43 Correct 78 ms 117356 KB Output is correct
44 Correct 76 ms 117356 KB Output is correct
45 Correct 74 ms 117356 KB Output is correct
46 Correct 41 ms 72300 KB Output is correct
47 Incorrect 67 ms 99052 KB Output isn't correct
48 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 42 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 41 ms 71276 KB Output is correct
7 Correct 43 ms 71148 KB Output is correct
8 Correct 41 ms 71148 KB Output is correct
9 Correct 44 ms 71148 KB Output is correct
10 Correct 43 ms 71148 KB Output is correct
11 Correct 42 ms 71148 KB Output is correct
12 Correct 44 ms 71148 KB Output is correct
13 Correct 45 ms 71148 KB Output is correct
14 Correct 43 ms 71148 KB Output is correct
15 Correct 42 ms 71148 KB Output is correct
16 Correct 47 ms 74092 KB Output is correct
17 Correct 44 ms 74092 KB Output is correct
18 Correct 43 ms 74092 KB Output is correct
19 Correct 43 ms 74092 KB Output is correct
20 Correct 42 ms 74092 KB Output is correct
21 Correct 42 ms 74092 KB Output is correct
22 Correct 43 ms 73324 KB Output is correct
23 Correct 43 ms 72652 KB Output is correct
24 Correct 43 ms 74092 KB Output is correct
25 Correct 43 ms 74092 KB Output is correct
26 Correct 43 ms 74092 KB Output is correct
27 Correct 42 ms 74092 KB Output is correct
28 Correct 43 ms 74092 KB Output is correct
29 Correct 44 ms 74112 KB Output is correct
30 Correct 43 ms 74092 KB Output is correct
31 Correct 80 ms 117356 KB Output is correct
32 Correct 76 ms 117392 KB Output is correct
33 Correct 74 ms 117356 KB Output is correct
34 Correct 76 ms 117356 KB Output is correct
35 Correct 76 ms 117356 KB Output is correct
36 Correct 76 ms 117356 KB Output is correct
37 Correct 68 ms 105708 KB Output is correct
38 Correct 63 ms 94828 KB Output is correct
39 Correct 75 ms 117356 KB Output is correct
40 Correct 75 ms 117484 KB Output is correct
41 Correct 74 ms 117356 KB Output is correct
42 Correct 74 ms 117356 KB Output is correct
43 Correct 78 ms 117356 KB Output is correct
44 Correct 76 ms 117356 KB Output is correct
45 Correct 74 ms 117356 KB Output is correct
46 Correct 41 ms 72300 KB Output is correct
47 Incorrect 67 ms 99052 KB Output isn't correct
48 Halted 0 ms 0 KB -