Submission #198889

#	Time	Username	Problem	Language	Result	Execution time	Memory
198889		Sakamotoo	선물상자 (IOI15_boxes)	C++14	70 / 100	2341 ms	274564 KiB

boxes

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

long long delivery(int n, int k, int l, int p[]) {
	long long dp1[n+1],dp2[n+1];
    long long jaw=1e18;
    dp1[0]=0;
    dp2[0]=0;
   // sort(p,p+n);
    for(int i=0; i<n; i++){
    	int x=i-k+1;
		int y=n-i-1;
    	if(x<0){
    		int y=n-i-1;
    		dp1[i+1]=p[i]+min(p[i],l-p[i]);
    		dp2[i+1]=l-p[y]+min(p[y],l-p[y]);
		}else {
			dp1[i+1]=dp1[x]+p[i]+min(p[i],l-p[i]);
			dp2[i+1]=dp2[x]+l-p[y]+min(p[y],l-p[y]);
		}
		//cout<<dp1[i+1]<<' '<<dp2[i+1]<<endl;
	}
	long long bef=1e18;
	int cnt=0;
	for(int i=0; i<=n; i++){
		jaw=min(jaw,dp1[i]+dp2[n-i]);
		if(jaw<bef) {
			bef=jaw;
			cnt=0;
		}else {
			cnt++;
			if(cnt>500000) break;
		}
	}
	return jaw;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:15:11: warning: declaration of 'y' shadows a previous local [-Wshadow]
       int y=n-i-1;
           ^
boxes.cpp:13:7: note: shadowed declaration is here
   int y=n-i-1;
       ^

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