Submission #243615

#	Time	Username	Problem	Language	Result	Execution time	Memory
243615		uacoder123	Gap (APIO16_gap)	C++14	100 / 100	82 ms	3480 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
 
typedef long long int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;

long long findGap(int T, int N)
{
  lli c=0,arr[N],l=0,rem=0,g,r=1000000000000000000,l1=0,r1=N-1,ans1,ans2,m=0;
  if(T==1)
  {
    for(;l1<=r1;)
    {
      MinMax(l,r,&ans1,&ans2);
      arr[l1]=ans1;
      l1++;
      l=ans1+1;
      arr[r1]=ans2;
      r1--;
      r=ans2-1;
    }
    for(lli i=0;i<N-1;++i)
      m=max(m,arr[i+1]-arr[i]);
  }
  else
  {
    MinMax(l,r,&ans1,&ans2);
    l=ans1+1;
    r=ans2-1;
    g=(r-l+1)/(N-1);
    rem+=(r-l+1)%(N-1);
    r1=g+l-1;
    vector<ii> v;
    v.pb(mp(ans1,ans1));
    while(1)
    {
      MinMax(l,min(r1+min(1*1LL,rem),r),&ans1,&ans2);
    if(ans1!=-1)
        v.pb(mp(ans1,ans2));
      if(r<=r1+min(1*1LL,rem))
        break;
      l=1+r1+min(1*1LL,rem);
      r1=r1+min(1*1LL,rem)+g;
      if(rem>0)
        rem-=1;
    }
    v.pb(mp(r+1,r+1));
    for(lli i=0;i<lli(v.size())-1;++i)
    {
      m=max(m,v[i+1].F-v[i].S);
    }   
  }
  return m;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:21:7: warning: unused variable 'c' [-Wunused-variable]
   lli c=0,arr[N],l=0,rem=0,g,r=1000000000000000000,l1=0,r1=N-1,ans1,ans2,m=0;
       ^

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