Submission #69190

#	Time	Username	Problem	Language	Result	Execution time	Memory
69190		FedericoS	Gap (APIO16_gap)	C++14	52.42 / 100	198 ms	3740 KiB

gap

#include "gap.h"
#include <vector>
#include <iostream>
#include <assert.h>
#include <algorithm>
using namespace std;
typedef long long ll;

ll INF=1e18;
ll S=5e17;
ll K=10;

ll x,y;
vector<ll> V;

void F(ll a, ll b){

	MinMax(a,b,&x,&y);
	if(x==-1)return;

	a=x;
	b=y;
	V.push_back(a);
	V.push_back(b);
	a++;
	b--;

	//if(a==b)F(a,b);
	if(a>=b)
		return;

	ll p=(b-a+K-1)/K;
	for(ll i=a;i<=b;i+=p)
		F(i,min(i+p-1,b));

}

long long findGap(int T, int N)
{

	if(T==1){

		y=INF;
		for(int i=0;i<(N+1)/2;i++){
			MinMax(x,y,&x,&y);
			if(x==-1)break;
			V.push_back(x);
			V.push_back(y);
			x++;
			y--;
			if(x>y)break;
		}
	 
		sort(V.begin(),V.end());
	 
		x=0;
		for(int i=0;i<V.size()-1;i++)
			x=max(x,V[i+1]-V[i]);
	 
		return x;

	}	

	MinMax(INF,INF,&x,&y);
	if(x!=-1)
		V.push_back(INF);

	for(ll i=0;i<INF;i+=S)
		F(i,i+S-1);

	sort(V.begin(),V.end());

	x=0;
	for(int i=0;i<V.size()-1;i++)
		x=max(x,V[i+1]-V[i]);

	/*for(ll d:V)
		cout<<d<<" ";
	cout<<endl;*/

	return x;
}

/*
1 6
1 2 5 7 8 12
*/

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:57:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<V.size()-1;i++)
               ~^~~~~~~~~~~
gap.cpp:74:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<V.size()-1;i++)
              ~^~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 22.416997886 / 70