Submission #1217610

#TimeUsernameProblemLanguageResultExecution timeMemory
1217610uroskHack (APIO25_hack)C++20
0 / 100
8 ms2988 KiB
#include "hack.h" #include "bits/stdc++.h" #define pb push_back #define dbg(X) cerr<<#X<<": "<<X<<endl #define si(a_) (ll)(a_.size()) #define fi first #define all(a_) a_.begin(),a_.end() #define sc second #define popb pop_back #define ceri(a_,l_,r_) {for(ll i_ = l_;i_<=r_;i_++) cerr<<a_[i_]<< " ";cerr<<endl;} using namespace std; using ll = long long; using pll = pair<ll,ll>; ll n; mt19937_64 rng(time(0)); ll rnd(ll l,ll r){return uniform_int_distribution<ll>(l,r)(rng);} map<ll,bool> tu; vector<ll> v,w; ll mx = 1000000000; /** 1 1000000000 **/ ll tres = 40000; ll m = 35000; vector<ll> con(vector<ll> a,vector<ll> b){ while(si(b)){ a.pb(b.back()); b.popb(); } return a; } pll reshi(vector<ll> vl,vector<ll> vr){ if(si(vl)==1&&si(vr)==1) return {vl[0],vr[0]}; vector<ll> vll,vlr; vector<ll> vrl,vrr; for(ll i = 0;i<si(vl);i++){ if(i<si(vl)/2) vll.pb(vl[i]); else vlr.pb(vl[i]); } for(ll i = 0;i<si(vr);i++){ if(i<si(vr)/2) vrl.pb(vr[i]); else vrr.pb(vr[i]); } //cerr<<si(vl)<< " "<<si(vr)<<endl; if(collisions(con(vll,vrl))) return reshi(vll,vrl); if(collisions(con(vll,vrr))) return reshi(vll,vrr); if(collisions(con(vlr,vrl))) return reshi(vlr,vrl); return reshi(vlr,vrr); } vector<ll> vl,vr; int hack(){ ll c = -1; if(collisions({1,2})) return 1; ll mxv = 100*mx; vector<ll> pw2; pw2.pb(1); while(pw2.back()<mx) pw2.pb(pw2.back()*2); for(ll t = 0;;t++){ vl.clear(); vr.clear(); for(ll i = 1;i<=m;i++) vl.pb(i); for(ll i = 2;i*m<=mx+m;i++) vr.pb(i*m); ll cnt = collisions(con(vl,vr)); // dbg(cnt); if(cnt==0) continue; //dbg(t); // dbg(cnt); //dbg(si(vl)); // dbg(si(vr)); pll p = reshi(vl,vr); c = abs(p.fi-p.sc); break; } //dbg(c); ll ans = c; vector<ll> d; for(ll i = 2;i*i<=c;i++){ if(c%i==0){ //dbg(i); d.pb(i); if(i*i!=c){ //dbg(c/i); d.pb(c/i); } } } d.pb(c); sort(all(d)); for(ll x : d){ if(collisions({1,x+1})) return x; } return ans ; }
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