제출 #885089

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
885089		vjudge1	K개의 묶음 (IZhO14_blocks)	C++17	0 / 100	0 ms	348 KiB

blocks

#include<bits/stdc++.h>

using namespace std;

#define read() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define day() time_t now = time(0);char* x = ctime(&now);cerr<<"Right Now Is : "<<x<<"\n"

#define ii pair<int,int>
#define X first
#define Y second 

const long long MAX = (int)1e5 + 5;
const long long INF = (int)1e9;
const long long MOD = (int)1e9 + 7;

int n,k;
int a[MAX];
int dp[2][MAX];
signed main(){
	
	read();
	
	cin >> n >> k;
	
	int bit = 0;
	for(int i = 1;i <= n;i++){
		cin >> a[i];
		dp[bit][i] = INF;
	}

	for(int j = 1;j <= k;j++){
		bit = 1 - bit;
		stack<ii> st;
		for(int i = 1;i <= n;i++){
			
			if(i < j)continue;
			int summ = dp[1 - bit][i - 1];
 		
			// if(st.size())
				// cout << i << " " << st.size() << " " << a[st.top().X] << " " << a[i] << "\n";
			while(!st.empty() && a[st.top().X] <= a[i]){
				summ = min(summ,st.top().Y);
			//	cout << st.top().X << "\n";
				st.pop();
			}
			
			//cout << summ << " " << a[i] << ' ';
			dp[bit][i] = summ + a[i];
			
			if(!st.empty()){
				dp[bit][i] = min(dp[bit][i],a[st.top().X] + st.top().Y);
			}
			
			
			
			st.push({i,summ});
			//cout << dp[bit][i] << " ";
		}
		//cout << "\n";
	}
	
	cout << dp[bit][n];
	
}

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