Submission #40881

#	Time	Username	Problem	Language	Result	Execution time	Memory
40881		IvanC	Gap (APIO16_gap)	C++14	44.20 / 100	90 ms	2660 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
mt19937_64 gen(rand() ^ (rand() << 16));
typedef long long ll;
typedef pair<ll,ll> ii;
ll NN,TT,maior;
ii binary_search(ll ini,ll fim){
	if(ini == fim) return ii(ini,ini);
	ll copia1 = ini,copia2 = fim;
	MinMax(ini,fim,&copia1,&copia2);
	ini = copia1;
	fim = copia2;
	if(fim - ini <= maior) return ii(ini,fim);
	ll meio = ini + (gen() % (fim - ini));
	ii novo1 = binary_search(ini,meio);
	ii novo2 = binary_search(meio+1,fim);
	if(novo1.second != novo2.first) maior = max(maior, novo2.first - novo1.second);
	return ii(ini,fim);
}
ll findGap(int T,int N){
	TT = T;
	NN = N;
	ll ini = 0,fim = (ll)1e18;
	if(T == 1){
		vector<ll> vetor;
		for(ll qtd = N;qtd >= 1;qtd -= 2){
			ll copia1,copia2;
			MinMax(ini,fim,&copia1,&copia2);
			vetor.push_back(copia1);
			vetor.push_back(copia2);
			ini = copia1;
			fim = copia2;
			ini++,fim--;
		}
		sort(vetor.begin(),vetor.end());
		for(ll i = 0;i+1<vetor.size();i++) maior = max(maior, vetor[i+1] - vetor[i] );
		return maior;
	}
	binary_search(ini,fim);
	return maior;
}

Compilation message (stderr)

gap.cpp: In function 'll findGap(int, int)':
gap.cpp:37:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(ll i = 0;i+1<vetor.size();i++) maior = max(maior, vetor[i+1] - vetor[i] );
                   ^

• Subtask 1: 30 / 30
• Subtask 2: 14.1970248374 / 70