Submission #134703

#	Time	Username	Problem	Language	Result	Execution time	Memory
134703		Boxworld	Boxes with souvenirs (IOI15_boxes)	C++14	0 / 100	2 ms	256 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;
long long delivery(int N, int K, int L, int p[]){
    int m=-1;
    long long ans=0;
    for (int i=0;i<N;i++)
	if (p[i]*2<L)m=i;
	for (int i=m;i>=0;i-=K)ans+=p[i]*2;
	for (int i=m+1;i<N;i+=K)ans+=(L-p[i])*2;
	if (m==-1||m==N-1)return ans;
	int r=m,l=m+1;
	for (int j=0;j*K<=N;j++){
		long long ans1=j*L;
		for (int i=0;i<K;i++){
			if (r!=0&&p[r]>L-p[l])r--;
			else if (l<N)l++;else r--;
		}
		for (int i=r;i>=0;i-=K)ans1+=p[i]*2;
		for (int i=l;i<N;i+=K)ans1+=(L-p[i])*2;
		ans=min(ans,ans1);
	}
	return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:7:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for (int i=0;i<N;i++)
     ^~~
boxes.cpp:9:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  for (int i=m;i>=0;i-=K)ans+=p[i]*2;
  ^~~

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