Submission #588251

#	Time	Username	Problem	Language	Result	Execution time	Memory
588251		inluminas	Skyline (IZhO11_skyline)	C++17	100 / 100	105 ms	50656 KiB

skyline

#include"bits/stdc++.h"
using namespace std;

#define ll long long
#define inf LLONG_MAX
#define fastio ios_base::sync_with_stdio(false)
#define endl "\n"
#define l first
#define r second

vector<vector<vector<int> > > dp (302,vector<vector<int>>(202,vector<int>(202,1e9)));
vector<vector<int>> sev (202,vector<int>(202,1e9));

int main(){
	fastio;

	int n; cin>>n;
	int h[n+1];
	for(int i=1;i<=n;i++)  cin>>h[i];

	dp[1][0][0]=h[1]*3;
	
	for(int i=2;i<=n;i++){

		for(int j=0;j<202;j++) fill(sev[j].begin(),sev[j].end(),1e9);

		for(int j=h[i-1];j>=0;j--){
			for(int k=h[i-1]-j;k>=0;k--){
				sev[j][k]=min(dp[i-1][h[i-1]-j-k][j],min(sev[j+1][k],sev[j][k+1]));
			}
		}

		for(int j=0;j<=h[i];j++){
			for(int k=0;k<=h[i]-j;k++){
				int l=h[i]-j-k;
				if(h[i-1]-j-k<0) continue;
				dp[i][j][k]=min(dp[i][j][k],sev[j][k]+2*j+2*k+3*l);
			}
		}
	}

	int ans=1e9;

	for(int j=0;j<=h[n];j++) for(int k=0;k<=h[n]-j;k++){
		ans=min(ans,dp[n][j][k]);
	}

	cout<<ans<<endl;
	return 0;
}

• Subtask 1: 100 / 100