Submission #469951

#	Time	Username	Problem	Language	Result	Execution time	Memory
469951		jazzup	Gap (APIO16_gap)	C++14	100 / 100	72 ms	2232 KiB

gap

#include "gap.h"
#include<vector>
#include<algorithm>

using namespace std;

vector<long long> v;

long long st=0,ed=1e18;

long long findGap(int T, int N){
	if(T==1){
		long long mn=st,mx=ed;
		for(int i=0;i<(N+1)/2;i++){
			MinMax(mn,mx,&mn,&mx);
			v.push_back(mn);
			if(mx!=mn)v.push_back(mx);
			mn++;
			mx--;
		}
		sort(v.begin(),v.end());
		long long ans=0;
		for(int i=0;i<v.size()-1;i++){
			ans=max(ans,v[i+1]-v[i]);
		}
		return ans;
	}

	long long mn,mx;
	MinMax(st,ed,&mn,&mx);

	if (N == 2) return mx-mn;

	long long ga=mx-mn-1;

	long long s=mn+1,rec=mn,ans=0;

	for(int i=0;i<N;i++){
		MinMax(s,s+1+ga/(N-1),&mn,&mx);
		if(mn!=-1){
			ans=max(ans,mn-rec);
			rec=mx;
		}
		s=s+2+ga/(N-1);
	}
	return ans;

}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:23:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   for(int i=0;i<v.size()-1;i++){
      |               ~^~~~~~~~~~~

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