#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
cerr<<vars<<" = ";
string delim="";
(...,(cerr<<delim<<values,delim=", "));
cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif
#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int mxN=5e3+5; //make sure this is right
const int mod=1e9+7;
int dp[mxN][mxN],a[mxN];
int main(){
cin.sync_with_stdio(0);
cin.tie(0); cout.tie(0);
#ifdef LOCAL
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
#endif
int n; cin>>n;
for(int i=1;i<=n;i++)
cin>>a[i];
for(int i=1;i<=n;i++){
for(int j=1;j<=i;j++){
int pre=i-j;
int k=i-j+1;
int p=pre;
int s1=0; int s2=0;
dp[i][j]=dp[pre][1];
int cnt=0;
while(p && k<i){
if(s1+a[p]<=s2+a[k]){
s1+=a[p--];
} else{
s2+=a[k++];
}
if(s1==s2){
cnt++;
maxa(dp[i][j],cnt+dp[pre][pre-p+1]);
}
}
deb(i,j,dp[i][j],cnt);
}
for(int j=i-1;j>=1;j--)
maxa(dp[i][j],dp[i][j+1]);
}
cout<<dp[n][1]<<"\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
328 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
328 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
588 KB |
Output is correct |
11 |
Correct |
1 ms |
580 KB |
Output is correct |
12 |
Correct |
1 ms |
588 KB |
Output is correct |
13 |
Correct |
1 ms |
588 KB |
Output is correct |
14 |
Correct |
1 ms |
588 KB |
Output is correct |
15 |
Correct |
1 ms |
588 KB |
Output is correct |
16 |
Correct |
1 ms |
584 KB |
Output is correct |
17 |
Correct |
1 ms |
588 KB |
Output is correct |
18 |
Correct |
1 ms |
588 KB |
Output is correct |
19 |
Correct |
1 ms |
588 KB |
Output is correct |
20 |
Correct |
1 ms |
580 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
46 ms |
2744 KB |
Output is correct |
2 |
Correct |
47 ms |
2780 KB |
Output is correct |
3 |
Correct |
45 ms |
2732 KB |
Output is correct |
4 |
Correct |
56 ms |
2752 KB |
Output is correct |
5 |
Correct |
54 ms |
2924 KB |
Output is correct |
6 |
Correct |
100 ms |
2812 KB |
Output is correct |
7 |
Correct |
105 ms |
2764 KB |
Output is correct |
8 |
Correct |
105 ms |
2736 KB |
Output is correct |
9 |
Correct |
104 ms |
2812 KB |
Output is correct |
10 |
Correct |
72 ms |
2840 KB |
Output is correct |
11 |
Correct |
87 ms |
2756 KB |
Output is correct |
12 |
Correct |
68 ms |
2764 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
328 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
588 KB |
Output is correct |
11 |
Correct |
1 ms |
580 KB |
Output is correct |
12 |
Correct |
1 ms |
588 KB |
Output is correct |
13 |
Correct |
1 ms |
588 KB |
Output is correct |
14 |
Correct |
1 ms |
588 KB |
Output is correct |
15 |
Correct |
1 ms |
588 KB |
Output is correct |
16 |
Correct |
1 ms |
584 KB |
Output is correct |
17 |
Correct |
1 ms |
588 KB |
Output is correct |
18 |
Correct |
1 ms |
588 KB |
Output is correct |
19 |
Correct |
1 ms |
588 KB |
Output is correct |
20 |
Correct |
1 ms |
580 KB |
Output is correct |
21 |
Correct |
46 ms |
2744 KB |
Output is correct |
22 |
Correct |
47 ms |
2780 KB |
Output is correct |
23 |
Correct |
45 ms |
2732 KB |
Output is correct |
24 |
Correct |
56 ms |
2752 KB |
Output is correct |
25 |
Correct |
54 ms |
2924 KB |
Output is correct |
26 |
Correct |
100 ms |
2812 KB |
Output is correct |
27 |
Correct |
105 ms |
2764 KB |
Output is correct |
28 |
Correct |
105 ms |
2736 KB |
Output is correct |
29 |
Correct |
104 ms |
2812 KB |
Output is correct |
30 |
Correct |
72 ms |
2840 KB |
Output is correct |
31 |
Correct |
87 ms |
2756 KB |
Output is correct |
32 |
Correct |
68 ms |
2764 KB |
Output is correct |
33 |
Correct |
44 ms |
2756 KB |
Output is correct |
34 |
Correct |
47 ms |
2756 KB |
Output is correct |
35 |
Correct |
49 ms |
2768 KB |
Output is correct |
36 |
Correct |
50 ms |
2748 KB |
Output is correct |
37 |
Correct |
101 ms |
2760 KB |
Output is correct |
38 |
Correct |
104 ms |
2708 KB |
Output is correct |
39 |
Correct |
137 ms |
2916 KB |
Output is correct |
40 |
Correct |
120 ms |
2724 KB |
Output is correct |
41 |
Correct |
93 ms |
2828 KB |
Output is correct |
42 |
Correct |
82 ms |
2736 KB |
Output is correct |
43 |
Correct |
79 ms |
2776 KB |
Output is correct |
44 |
Correct |
113 ms |
2716 KB |
Output is correct |
45 |
Correct |
83 ms |
2760 KB |
Output is correct |
46 |
Correct |
87 ms |
2708 KB |
Output is correct |
47 |
Correct |
106 ms |
2756 KB |
Output is correct |
48 |
Correct |
85 ms |
2756 KB |
Output is correct |
49 |
Correct |
73 ms |
2800 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
328 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
588 KB |
Output is correct |
11 |
Correct |
1 ms |
580 KB |
Output is correct |
12 |
Correct |
1 ms |
588 KB |
Output is correct |
13 |
Correct |
1 ms |
588 KB |
Output is correct |
14 |
Correct |
1 ms |
588 KB |
Output is correct |
15 |
Correct |
1 ms |
588 KB |
Output is correct |
16 |
Correct |
1 ms |
584 KB |
Output is correct |
17 |
Correct |
1 ms |
588 KB |
Output is correct |
18 |
Correct |
1 ms |
588 KB |
Output is correct |
19 |
Correct |
1 ms |
588 KB |
Output is correct |
20 |
Correct |
1 ms |
580 KB |
Output is correct |
21 |
Correct |
46 ms |
2744 KB |
Output is correct |
22 |
Correct |
47 ms |
2780 KB |
Output is correct |
23 |
Correct |
45 ms |
2732 KB |
Output is correct |
24 |
Correct |
56 ms |
2752 KB |
Output is correct |
25 |
Correct |
54 ms |
2924 KB |
Output is correct |
26 |
Correct |
100 ms |
2812 KB |
Output is correct |
27 |
Correct |
105 ms |
2764 KB |
Output is correct |
28 |
Correct |
105 ms |
2736 KB |
Output is correct |
29 |
Correct |
104 ms |
2812 KB |
Output is correct |
30 |
Correct |
72 ms |
2840 KB |
Output is correct |
31 |
Correct |
87 ms |
2756 KB |
Output is correct |
32 |
Correct |
68 ms |
2764 KB |
Output is correct |
33 |
Correct |
44 ms |
2756 KB |
Output is correct |
34 |
Correct |
47 ms |
2756 KB |
Output is correct |
35 |
Correct |
49 ms |
2768 KB |
Output is correct |
36 |
Correct |
50 ms |
2748 KB |
Output is correct |
37 |
Correct |
101 ms |
2760 KB |
Output is correct |
38 |
Correct |
104 ms |
2708 KB |
Output is correct |
39 |
Correct |
137 ms |
2916 KB |
Output is correct |
40 |
Correct |
120 ms |
2724 KB |
Output is correct |
41 |
Correct |
93 ms |
2828 KB |
Output is correct |
42 |
Correct |
82 ms |
2736 KB |
Output is correct |
43 |
Correct |
79 ms |
2776 KB |
Output is correct |
44 |
Correct |
113 ms |
2716 KB |
Output is correct |
45 |
Correct |
83 ms |
2760 KB |
Output is correct |
46 |
Correct |
87 ms |
2708 KB |
Output is correct |
47 |
Correct |
106 ms |
2756 KB |
Output is correct |
48 |
Correct |
85 ms |
2756 KB |
Output is correct |
49 |
Correct |
73 ms |
2800 KB |
Output is correct |
50 |
Execution timed out |
1089 ms |
10424 KB |
Time limit exceeded |
51 |
Halted |
0 ms |
0 KB |
- |