Submission #151543

#	Time	Username	Problem	Language	Result	Execution time	Memory
151543		tqthangbl	K blocks (IZhO14_blocks)	C++14	53 / 100	1068 ms	2524 KiB

blocks

#include <bits/stdc++.h>

using namespace std;

#define taskname "MAXK"
#define forinc(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define fordec(i, a, b) for (int i = (a), _b = (b); i >= _b; --i)
#define foreach(i, x) for (auto &i : x)
#define ms(x, n) memset(x, n, sizeof(x))
#define sz(x) int((x).size())
#define all(x) (x).begin(), (x).end()
#define uni(x) (x).erase(unique(all(x)), (x).end())
#define fi first
#define se second
#define pb push_back
#define pf push_front

template<typename TH>
void _dbg(const char* sdbg, TH h)
{
	cerr << sdbg << " = " << h << "\n";
}

template<typename TH, typename... TA>
void _dbg(const char* sdbg, TH h, TA... t)
{
	while (*sdbg != ',') cerr << *sdbg++;
	cerr << " = " << h << ",";
	_dbg(sdbg + 1, t...);
}

#define db(...) _dbg(#__VA_ARGS__, __VA_ARGS__)
#define chkpt cerr << "--- Checkpoint here ---\n";

const int N=1e5+5,K=1e2+2;
const int64_t LINF=1e18;

int n,k,a[N];
int64_t dp[K][N];

void ReadInput()
{
    cin>>n>>k;
    forinc(i,1,n) cin>>a[i];
}

int GetMax(int l,int r)
{
    int res=a[l];
    forinc(i,l+1,r) res=max(res,a[i]);
    return res;
}

void Solve()
{
    forinc(nGroup,1,k) forinc(i,1,n) dp[nGroup][i]=LINF;
    int curMax=a[1];
    forinc(i,1,n)
    {
        curMax=max(curMax,a[i]);
        dp[1][i]=curMax;
    }
    forinc(nGroup,2,k)
    {
        forinc(i,nGroup,n)
        {
            int curMax=a[i];
            fordec(j,i-1,1)
            {
                curMax=max(curMax,a[j+1]);
                if(dp[nGroup-1][j]==LINF) continue;
                dp[nGroup][i]=min(dp[nGroup][i],dp[nGroup-1][j]+curMax);
            }
        }
    }
    cout<<dp[k][n];
}

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
//	#ifndef ONLINE_JUDGE
//	freopen(taskname".INP","r",stdin);
//	#endif // ONLINE_JUDGE
	ReadInput();
	Solve();
    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 18 / 18
• Subtask 3: 21 / 21
• Subtask 4: 0 / 47