Submission #434878

#	Time	Username	Problem	Language	Result	Execution time	Memory
434878		jeqcho	Boxes with souvenirs (IOI15_boxes)	C++17	20 / 100	1 ms	204 KiB

boxes

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

typedef long double ld;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pair<int,int>> vpi;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define rsz resize
#define sz(x) int(x.size())
#define all(x) begin(x), end(x)
#define fi first
#define se second

int const N=1e7+3;
vector<ll> p;
int n,k;


ll delivery(int n1, int K, int L1, int p1[]) {
	k=K;
	n=n1;
	p.rsz(n);
	ll L=L1;
	F0R(i,n)p[i]=p1[i];
	ll cur=0;
	int i=0;
	int j=n-1;
	ll ans=0;
	int cnt=k;
	while(i<=j)
	{
		if(cnt==0)
		{
			ans += min(cur,L-cur);
			cur=0;
			cnt=k;
		}
		ll dcw=p[i]-cur;
		if(dcw<0)dcw = L-cur+p[i];
		ll dccw=cur-p[j];
		if(dccw<0)dccw=cur+L-p[j];
		if(dcw<dccw)
		{
			ans+=dcw;
			cur=p[i];
			++i;
		}
		else
		{
			ans+=dccw;
			cur=p[j];
			--j;
		}
		--cnt;
	}
	ans+=min(L-cur,cur);
	return ans;
}

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