Submission #1101468

#	Time	Username	Problem	Language	Result	Execution time	Memory
1101468		huydeptraiso1vutruvn	K blocks (IZhO14_blocks)	C++14	53 / 100	1080 ms	84816 KiB

blocks

#include <bits/stdc++.h>
#define fi first
#define se second
#define int long long
#define pii pair<int,int>
#define pb push_back
#define bit(mask,i) ((mask >> i) & 1)
#define mask(i) (1 << (i))
#define lcm(a,b) ((a*b)/__gcd(a,b))
#define turn_on(mask,i) ((mask | (1 << i))
#define turn_off(mask,i) (mask ^ (1 << i))
#define count_1(x) __builtin_popcount(x)
#define faster ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
using namespace std;
const int Base = 37;
const int MOD = 1e9 + 7;
const int nmax = 1e5;
const int size = 320;
int dx[4] = {-1, 0, 1, 0};
int dy[4] = {0, 1, 0, -1};
int n, k;
int a[nmax + 10], b[nmax + 10][20];
int dp[nmax + 10][105];

void input()
	{
		cin >> n >> k;
		
		for (int i = 1; i <= n; i++) cin >> a[i];
	}
	
void RMQ()
	{
		for (int i = 1; i <= n; i++) b[i][0] = a[i];
		
		for (int j = 1; (1 << j) <= n; j++)
			{
				for (int i = 0; i + (1 << j) - 1 <= n; i++)
					{
						b[i][j] = max(b[i][j - 1] , b[i + (1 << (j - 1))][j - 1]);
					}
			}
	}
	
int get(int l , int r)
	{
		int k = __lg(r - l + 1);
		
		return max(b[l][k] , b[r - (1 << k) + 1][k]);
	}
	
void process()
	{
		memset(dp , 0x3f , sizeof(dp));
		
		dp[0][0] = 0;
		
		for (int i = 1; i <= k; i++)
		  {
		    for (int j = i; j <= n; j++)
		      {
		        for (int h = i; h <= j; h++)
		          {
		            dp[i][j] = min(dp[i][j] , dp[i - 1][h - 1] + get(h , j));
		          }
		      }
		  }
			
		cout << dp[k][n];
	}
	
signed main()
	{
		faster
		
		// freopen ("TASK.INP", "r", stdin);
		// freopen ("TASK.OUT", "w", stdout);
		
		input();
		
		RMQ();
		
		process();
		
	}

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