#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;
int main() {
FAST
cin>>n; assert(n<=3000);
FOR(i,1,n) { cin>>A[i]; assert(A[i]>0); }
FOR(i,1,n) A[i] += A[i-1];
FOR(i,1,n) FOR(j,1,i) {
dp[i][j] = j == 1 ? 1 : -INF;
FOR(k,1,j-1) if(A[i] - A[j-1] >= A[j-1] - A[k-1]) {
dp[i][j] = max(dp[i][j], dp[j-1][k] + 1);
}
ans=max(ans,dp[i][j]);
}
cout<<ans<<'\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
408 KB |
Output is correct |
| 6 |
Correct |
1 ms |
492 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
2 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
492 KB |
Output is correct |
| 10 |
Correct |
1 ms |
492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
1 ms |
492 KB |
Output is correct |
| 13 |
Correct |
1 ms |
492 KB |
Output is correct |
| 14 |
Correct |
1 ms |
492 KB |
Output is correct |
| 15 |
Correct |
1 ms |
492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
408 KB |
Output is correct |
| 6 |
Correct |
1 ms |
492 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
2 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
492 KB |
Output is correct |
| 10 |
Correct |
1 ms |
492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
1 ms |
492 KB |
Output is correct |
| 13 |
Correct |
1 ms |
492 KB |
Output is correct |
| 14 |
Correct |
1 ms |
492 KB |
Output is correct |
| 15 |
Correct |
1 ms |
492 KB |
Output is correct |
| 16 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 17 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 18 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 19 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 20 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 21 |
Correct |
28 ms |
3308 KB |
Output is correct |
| 22 |
Correct |
15 ms |
2540 KB |
Output is correct |
| 23 |
Correct |
7 ms |
1900 KB |
Output is correct |
| 24 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 25 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 26 |
Correct |
30 ms |
3304 KB |
Output is correct |
| 27 |
Correct |
27 ms |
3308 KB |
Output is correct |
| 28 |
Correct |
31 ms |
3308 KB |
Output is correct |
| 29 |
Correct |
71 ms |
3436 KB |
Output is correct |
| 30 |
Correct |
62 ms |
3308 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
408 KB |
Output is correct |
| 6 |
Correct |
1 ms |
492 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
2 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
492 KB |
Output is correct |
| 10 |
Correct |
1 ms |
492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
1 ms |
492 KB |
Output is correct |
| 13 |
Correct |
1 ms |
492 KB |
Output is correct |
| 14 |
Correct |
1 ms |
492 KB |
Output is correct |
| 15 |
Correct |
1 ms |
492 KB |
Output is correct |
| 16 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 17 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 18 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 19 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 20 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 21 |
Correct |
28 ms |
3308 KB |
Output is correct |
| 22 |
Correct |
15 ms |
2540 KB |
Output is correct |
| 23 |
Correct |
7 ms |
1900 KB |
Output is correct |
| 24 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 25 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 26 |
Correct |
30 ms |
3304 KB |
Output is correct |
| 27 |
Correct |
27 ms |
3308 KB |
Output is correct |
| 28 |
Correct |
31 ms |
3308 KB |
Output is correct |
| 29 |
Correct |
71 ms |
3436 KB |
Output is correct |
| 30 |
Correct |
62 ms |
3308 KB |
Output is correct |
| 31 |
Execution timed out |
1586 ms |
22196 KB |
Time limit exceeded |
| 32 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
408 KB |
Output is correct |
| 6 |
Correct |
1 ms |
492 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
2 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
492 KB |
Output is correct |
| 10 |
Correct |
1 ms |
492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
1 ms |
492 KB |
Output is correct |
| 13 |
Correct |
1 ms |
492 KB |
Output is correct |
| 14 |
Correct |
1 ms |
492 KB |
Output is correct |
| 15 |
Correct |
1 ms |
492 KB |
Output is correct |
| 16 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 17 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 18 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 19 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 20 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 21 |
Correct |
28 ms |
3308 KB |
Output is correct |
| 22 |
Correct |
15 ms |
2540 KB |
Output is correct |
| 23 |
Correct |
7 ms |
1900 KB |
Output is correct |
| 24 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 25 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 26 |
Correct |
30 ms |
3304 KB |
Output is correct |
| 27 |
Correct |
27 ms |
3308 KB |
Output is correct |
| 28 |
Correct |
31 ms |
3308 KB |
Output is correct |
| 29 |
Correct |
71 ms |
3436 KB |
Output is correct |
| 30 |
Correct |
62 ms |
3308 KB |
Output is correct |
| 31 |
Execution timed out |
1586 ms |
22196 KB |
Time limit exceeded |
| 32 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
408 KB |
Output is correct |
| 6 |
Correct |
1 ms |
492 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
2 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
492 KB |
Output is correct |
| 10 |
Correct |
1 ms |
492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
492 KB |
Output is correct |
| 12 |
Correct |
1 ms |
492 KB |
Output is correct |
| 13 |
Correct |
1 ms |
492 KB |
Output is correct |
| 14 |
Correct |
1 ms |
492 KB |
Output is correct |
| 15 |
Correct |
1 ms |
492 KB |
Output is correct |
| 16 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 17 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 18 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 19 |
Correct |
30 ms |
3308 KB |
Output is correct |
| 20 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 21 |
Correct |
28 ms |
3308 KB |
Output is correct |
| 22 |
Correct |
15 ms |
2540 KB |
Output is correct |
| 23 |
Correct |
7 ms |
1900 KB |
Output is correct |
| 24 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 25 |
Correct |
29 ms |
3308 KB |
Output is correct |
| 26 |
Correct |
30 ms |
3304 KB |
Output is correct |
| 27 |
Correct |
27 ms |
3308 KB |
Output is correct |
| 28 |
Correct |
31 ms |
3308 KB |
Output is correct |
| 29 |
Correct |
71 ms |
3436 KB |
Output is correct |
| 30 |
Correct |
62 ms |
3308 KB |
Output is correct |
| 31 |
Execution timed out |
1586 ms |
22196 KB |
Time limit exceeded |
| 32 |
Halted |
0 ms |
0 KB |
- |
