Submission #409787

#	Time	Username	Problem	Language	Result	Execution time	Memory
409787		jeqcho	Gap (APIO16_gap)	C++17	30 / 100	76 ms	3304 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pair<int,int>> vpi;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define rsz resize
#define sz(x) int(x.size())
#define all(x) begin(x), end(x)
#define fi first
#define se second

long long findGap(int T, int N)
{
	if(T==1)
	{
		ll s=0;
		ll t=1e18;
		vector<ll>v;
		while(sz(v)!=N)
		{
			ll c,d;
			MinMax(s,t,&c,&d);
			v.pb(c);
			if(c!=d)v.pb(d);
			s=c+1;
			t=d-1;
		}
		sort(all(v));
		ll rec=-1e9;
		F0R(i,N-1)
		{
			rec=max(rec,v[i+1]-v[i]);
		}
		return rec;
	}
	else
	{
		ll s=0;
		ll t=1e18;
		vector<ll>v;
		ll a,b;
		MinMax(s,t,&a,&b);
		ll lef=a;
		ll rig=b;
		v.pb(a);
		v.pb(b);
		ll len =(b-1 - (a-1)+1)/(N-1) + 1;
		s=a+1;
		t=a+1+len-1;
		while(1)
		{
			MinMax(s,t,&a,&b);
			v.pb(a);
			v.pb(b);
			if(t==rig-1)break;
			s+=len;
			t+=len;
			t=min(t,rig-1);
		}
		sort(all(v));
		ll rec=-1e9;
		F0R(i,sz(v)-1)
		{
			rec=max(rec,v[i+1]-v[i]);
		}
		return rec;
	}
	
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:54:6: warning: unused variable 'lef' [-Wunused-variable]
   54 |   ll lef=a;
      |      ^~~

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70