Submission #578765

#	Time	Username	Problem	Language	Result	Execution time	Memory
578765		MohamedAhmed04	Gap (APIO16_gap)	C++14	100 / 100	70 ms	3168 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>

using namespace std ;

long long solve1(int N)
{
	long long L = 1 , R = 1e18 ;
	vector<long long>v ;
	while(N > 0)
	{
		long long x , y ;
		MinMax(L , R , &x , &y) ;
		if(x == -1)
			break ;
		N -= 2 ;
		v.push_back(x) , v.push_back(y) ;
		L = x+1 , R = y-1 ;
	}
	sort(v.begin() , v.end()) ;
	long long ans = 0 ;
	int sz = v.size() ;
	for(int i = 1 ; i < sz ; ++i)
		ans = max(ans , v[i] - v[i-1]) ;
	return ans ;
}

long long solve2(int N)
{
	long long L , R ;
	MinMax(1 , 1e18 , &L , &R) ;
	long long sz = (R-L+1 + N-1) / N ;
	vector<long long>v ;
	v.push_back(L) ;
	for(long long i = L ; i < R ; i += sz)
	{
		long long l = max(i , L+1) , r = min(i+sz-1 , R-1) ;
		if(l > r)
			continue ;
		long long x , y ;
		MinMax(l , r , &x , &y) ;
		if(x != -1 && y != -1)
			v.push_back(x) , v.push_back(y) ;
	}
	v.push_back(R) ;
	sz = v.size() ;
	long long ans = 0 ;
	for(int i = 1 ; i < sz ; ++i)
		ans = max(ans , v[i] - v[i-1]) ;
	return ans ;
}

long long findGap(int T, int N)
{
	if(T == 1)
		return solve1(N) ;
	else
		return solve2(N) ;
}

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