Submission #81678

#	Time	Username	Problem	Language	Result	Execution time	Memory
81678		wzy	Boxes with souvenirs (IOI15_boxes)	C++11	0 / 100	15 ms	376 KiB

boxes

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


long long delivery(int N, int K, int L, int p[]) {
	#define int long long 
	int ans = (int) 1e18;
	int k = K;
	int n = N;
	int l = L;
	for(int j = N - 1 ; j >= 0 ; j--){
		for(int r = 0 ; (j - k*r + 1) >= 0 ; r++){
			int u = j - k*r + 1;
			if(u > j) continue;
		//	cout<<u<<" " << j <<" " << ans << endl;
			ans = min(ans , 2*p[u]*((u+1)/k + ((u+1)%k ? 1 : 0)) + 2*(L - p[j])*((n - j)/k + ((n-j)%k ? 1 : 0)) + L*((j-u+1)/k + ((j-u+1)%k ? 1 : 0)));
		//	cout<<u<<" " << j <<" " << ans << endl;
		}
	//	cout<<"__"<<endl;
	//	cout<<j <<" " << ans << endl;
		ans = min(ans , 2*(L - p[j])*((n-j)/k + ((n-j)%k ? 1 : 0)) + L*((j)/k + (j%k ? 1 : 0)));
	//	cout<<j <<" " << ans << endl;
		int i = j;
		ans = min(ans , 2*p[i]*((i+1)/k + ((i+1)%k ? 1 : 0)) + L *((n-i-1)/k + ((n-i-1)%k ? 1 : 0)));
	//	cout<<j <<" " << ans <<" "<<endl;
	//	cout<<"__"<<endl;
	}
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:11:6: warning: unused variable 'l' [-Wunused-variable]
  int l = L;
      ^

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