Submission #30743

#	Time	Username	Problem	Language	Result	Execution time	Memory
30743		PrOAhMeT	Gap (APIO16_gap)	C++14	100 / 100	93 ms	6772 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define LL long long
#define st first
#define nd second
#define endl '\n'
using namespace std;

long long findGap(int T, int n)
{
	
	vector<LL> v;
	LL x=-1,y=2e18,nx,ny,ret=0,cnt=0;
	if(T==1) {

		while(cnt<(n+1)/2) {
			MinMax(x+1,y-1,&nx,&ny);
			x=nx; y=ny;
			v.pb(x);
			cnt++;
			if(x==y)
				break;
			v.pb(y);
		}
		sort(v.begin(),v.end());
		for(int i=1;i<v.size();++i)
			ret=max(ret,v[i]-v[i-1]);

	}
	else {

		LL mn,mx;
		MinMax(0,(LL)(1e18),&mn,&mx);
		LL dif=(mx-mn-1+n-2)/(n-1);
		v.pb(mn);
		v.pb(mx);
		if(dif==0)
			return 1LL;
		for(LL l=mn+1;l<mx;l+=dif) {
			MinMax(l,min(l+dif-1,mx-1),&nx,&ny);
			if(nx!=-1) {
				v.pb(nx);
				if(nx!=ny)
					v.pb(ny);
			}
		}
		sort(v.begin(),v.end());
		for(int i=1;i<v.size();++i)
			ret=max(ret,v[i]-v[i-1]);

	}
	return ret;

}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:29:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=1;i<v.size();++i)
                ^
gap.cpp:51:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=1;i<v.size();++i)
                ^

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