Submission #167209

#	Time	Username	Problem	Language	Result	Execution time	Memory
167209		mosiashvililuka	K blocks (IZhO14_blocks)	C++14	0 / 100	13 ms	4856 KiB

blocks

#include<bits/stdc++.h>
using namespace std;
int a,b,c,d,e,f[100009],i,j,dp[100009][109],msh[100009],la[100009];
deque <pair <int, int> > de[109];
int main(){
	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	cin>>a>>b;
	for(i=1; i<=a; i++) cin>>f[i];
	for(i=0; i<=a+1; i++){
		for(j=0; j<=b+1; j++) dp[i][j]=999999999;
	}
	dp[0][1]=0;
	for(i=1; i<=a; i++) dp[i][1]=max(dp[i-1][1],f[i]);
	for(i=1; i<=a; i++){
		while(de[0].size()!=0){
			if(de[0][de[0].size()-1].second<f[i]){
				de[0].pop_back();
			}else{
				msh[i]=de[0][de[0].size()-1].first;
				break;
			}
		}
		de[0].push_back(make_pair(i,f[i]));
	}
	if(b==1){
		cout<<dp[a][1];
		return 0;
	}
	for(j=2; j<=b; j++){
		for(i=1; i<=a; i++) la[i]=dp[i][j-1];
		for(i=2; i<=a; i++) if(la[i]>la[i-1]) la[i]=la[i-1];
		for(i=j; i<=a; i++){
			if(msh[i]!=0){
			dp[i][j]=dp[msh[i]][j];
			int zx=0,xc=0;
			while(de[j].size()!=0){
				if(de[j][de[j].size()-1].first>=msh[j]){
					zx=de[j][de[j].size()-1].first;
					xc=de[j][de[j].size()-1].second;
					de[j].pop_back();
				}else{
					break;
				}
			}
			if(zx!=0){
				if(dp[i][j]>xc+f[i]) dp[i][j]=xc+f[i];
			}
			while(de[j].size()!=0){
				if(de[j][de[j].size()-1].second>dp[i][j]){
					de[j].pop_back();
				}else{
					break;
				}
			}
			de[j].push_back(make_pair(i,dp[i][j]));
			}else{
				dp[i][j]=la[i-1]+f[i];
			}
		}
	}
	cout<<dp[a][b];
	return 0;
}

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