Submission #209366

#	Time	Username	Problem	Language	Result	Execution time	Memory
209366		autumn_eel	Boxes with souvenirs (IOI15_boxes)	C++14	50 / 100	128 ms	81400 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef long long ll;

const ll INF=0x3f3f3f3f3f3f3f3f;

ll dp[2000][2000];

long long delivery(int N, int K, int L, int p[]) {
	memset(dp,0x3f,sizeof(dp));
	dp[0][0]=0;
	rep(i,N)rep(j,K){
		if(dp[i][j]==INF)continue;
		if(j==0){
			dp[i+1][0]=min(dp[i+1][0],dp[i][j]+min(p[i],L-p[i])*2);
			if(1<K)dp[i+1][1]=min(dp[i+1][1],dp[i][j]+min(p[i],L-p[i]));
		}
		else{
			dp[i+1][0]=min(dp[i+1][0],dp[i][j]+min(p[i],L-p[i])+(p[i]-p[i-1]));
			if(j+1<K)dp[i+1][j+1]=min(dp[i+1][j+1],dp[i][j]+(p[i]-p[i-1]));
		}
	}
	return dp[N][0];
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30