#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#include<bits/stdc++.h>
using namespace std;
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define deb(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define deb(x...)
#endif
#define fast ios_base::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL)
#define pb push_back
#define endl "\n"
typedef long long int ll;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<LL, LL> pll;
typedef pair<string, string> pss;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<pii> vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef vector<vl> vvl;
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define mem(a,x) memset(a,x,sizeof(a))
#define ff first
#define ss second
#define w(t) int t; cin>>t; while(t--)
#define maxe *max_element
#define mine *min_element
#define sz(x) (int)(x).size()
#define lb lower_bound
#define ub upper_bound
#define setbits(x) __builtin_popcountll(x)
#define zrobits(x) __builtin_ctzll(x)
const long long INFF=1e18;
const int INF=INT_MAX;
const int N = 50001;
const int M = 1e9+7;
ll dp[1005][1005];
int arr[10000];
ll pf[10000];
int n,k;
int ind[1003][1003];
ll fun(int idx,int parts,stack<int> &st){
if(idx>n)
return 0;
if(parts==0){
return 0;
}
if(n-idx<parts)
return -1;
ll ans=0;
for(int i=idx;i<=n;i++){
ll sum1=pf[i]-pf[idx-1];
ll sum2=pf[n]-pf[i];
ll tem_ans=sum1*sum2;
ll val=fun(i+1,parts-1,st);
if(val!=-1){
tem_ans+=val;
if(tem_ans>ans){
// if(ans>0 )
// st.pop();
// st.push(i);
ind[idx][parts]=i;
ans=tem_ans;
}
// ans=max(ans,sum1*sum2+fun(i+1,parts-1,st));
}
}
return dp[idx][parts]=ans;
}
int32_t main()
{
/****************************************/
/****************************************/
fast;
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output 2.txt", "w", stdout);
#endif
#ifndef ONLINE_JUDGE
freopen("output2.txt", "w", stderr);
#endif
/****************************************/
/****************************************/
cin >> n >> k;
for(int i=0;i<n+3;i++){
for(int j=0;j<n+3;j++)
dp[i][j]=-1;
}
for(int i=0;i<n;i++)
cin >> arr[i+1];
for(int i=1;i<=n;i++)
pf[i]=pf[i-1]+arr[i];
stack<int> st;
cout << fun(1,k,st) << endl;
vi v;
int parts=k;
int i=1;
while(parts){
v.pb(ind[i][parts]);
i=ind[i][parts]+1;
parts--;
}
deb(v);
return 0;
}
Compilation message
sequence.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
2 | #pragma GCC optimization ("O3")
|
sequence.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
3 | #pragma GCC optimization ("unroll-loops")
|
sequence.cpp: In function 'int32_t main()':
sequence.cpp:110:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
110 | freopen("input.txt", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
sequence.cpp:111:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
111 | freopen("output 2.txt", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sequence.cpp:114:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
114 | freopen("output2.txt", "w", stderr);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Unexpected end of file - int64 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Unexpected end of file - int64 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Unexpected end of file - int64 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Unexpected end of file - int64 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Unexpected end of file - int64 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
3 ms |
408 KB |
Unexpected end of file - int64 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
