Submission #257019

#	Time	Username	Problem	Language	Result	Execution time	Memory
257019		Nucleist	Gap (APIO16_gap)	C++14	100 / 100	104 ms	5880 KiB

gap

//Self-control leads to consistency.
#include <bits/stdc++.h> 
#include "gap.h"  
using namespace std; 
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define flash ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define debug(x) cerr << " - " << #x << ": " << x << endl;
#define debugs(x, y) cerr << " - " << #x << ": " << x << " " << #y << ": " << y << endl;
#define all(x) (x).begin(),(x).end()
#define sz(x) (ll)x.size()
#define ll long long
#define INF 1000000000
#define MOD 1000000007
#define pb push_back
#define ve vector<ll>
#define dos pair<ll,ll>
#define vedos vector<dos>
#define rand mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
#define EPS 0.000001
struct greateri
{
    template<class T>
    bool operator()(T const &a, T const &b) const { return a > b; }
};
void setIO(string s) {
  ios_base::sync_with_stdio(0); cin.tie(0); 
  freopen((s+".in").c_str(),"r",stdin);
  freopen((s+".out").c_str(),"w",stdout);
}
ll findGap(int T,int N){
  if(T==2){
    ll mx=0,mn=0;
    ll dol=pow(10,18);
    MinMax(0,dol,&mn,&mx);
    ll l=mn+1,r=mx-1;
    set<ll>ans;
    ans.insert(mn),ans.insert(mx);
    ll f=(r-l+1)/(N-1);
    for (ll i = l; i <= r; i+=(f+1))
    {
    ll k=i,k1=i+f;
    if(i+f>r){
      k1=r;
    }
    MinMax(k,k1,&mn,&mx);
    ans.insert(mn),ans.insert(mx);
    if(i+f>r){
      break;
    }
    }
    ll sol=0;
    ans.erase(-1);
    ll last=*(ans.begin());
    for(auto it:ans){
    if(last!=it){
      sol=max(sol,it-last);
      last=it;
    }
    }
  return sol;
  }
  set<ll>cur;
  ll mx=0,mn=0;
  ll l=0,r=pow(10,18);
  while(sz(cur)<N){
    MinMax(l,r,&mn,&mx);
    cur.insert(mn),cur.insert(mx);
    cur.erase(-1);
    l=mn+1,r=mx-1;
  }
  ll sol=0;
  ll last=*(cur.begin());
  for(auto it:cur){
    if(last!=it){
      sol=max(sol,it-last);
      last=it;
    }
  }
  return sol;
}

Compilation message (stderr)

gap.cpp:6:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("O3")
 
gap.cpp:7:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("unroll-loops")
 
gap.cpp: In function 'void setIO(std::__cxx11::string)':
gap.cpp:29:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen((s+".in").c_str(),"r",stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gap.cpp:30:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen((s+".out").c_str(),"w",stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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