Submission #1015165

#	Time	Username	Problem	Language	Result	Execution time	Memory
1015165		vjudge1	Gap (APIO16_gap)	C++17	100 / 100	32 ms	2764 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
// #include "grader.cpp"
using namespace std;
long long solve(int n){
	long long mn,mx;
	long long s=0,t=1e18;
	vector<long long> arr;
	vector<long long> a1;
	while(int(arr.size())+int(a1.size())<n){
		MinMax(s,t,&mn,&mx);
		if(mn==-1)
			break;
		s=mn+1;
		t=mx-1;
		arr.push_back(mn);
		a1.push_back(mx);
	}
	reverse(a1.begin(), a1.end());
	for(long long i:a1)
		arr.push_back(i);
	long long g=0;
	for(int i=1;i<arr.size();i++)
		g=max(g,arr[i]-arr[i-1]);
	return g;
}
long long findGap(int T, int N)
{
	if(T==1)
		return solve(N);
	long long mn,mx;
	long long s=0,t=1e18;
	MinMax(s,t,&mn,&mx);
	s=mn+1,t=mx;
	long long gap=(t-s)/(N-1);
	long long ans=0;
	long long pre=mn;
	while(s<t){
		MinMax(s,min(s+gap,t),&mn,&mx);
		if(mn==-1)
			s+=gap;
		else{
			gap=max(gap,mn-pre);
			s=mx+1;
			pre=mx;
		}
	}
	return gap;
}

Compilation message (stderr)

gap.cpp: In function 'long long int solve(int)':
gap.cpp:23:15: 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=1;i<arr.size();i++)
      |              ~^~~~~~~~~~~
gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:36:12: warning: unused variable 'ans' [-Wunused-variable]
   36 |  long long ans=0;
      |            ^~~

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