Submission #304599

#	Time	Username	Problem	Language	Result	Execution time	Memory
304599		ryansee	Mechanical Doll (IOI18_doll)	C++14	84 / 100	345 ms	42520 KiB

doll

#include "doll.h"

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

#define FAST ios_base::sync_with_stdio(false); cin.tie(0);
#define pb push_back
#define eb emplace_back
#define ins insert
#define f first
#define s second
#define cbr cerr<<"hi\n"
#define mmst(x, v) memset((x), v, sizeof ((x)))
#define siz(x) ll(x.size())
#define all(x) (x).begin(), (x).end()
#define lbd(x,y) (lower_bound(all(x),y)-x.begin())
#define ubd(x,y) (upper_bound(all(x),y)-x.begin())
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());    //can be used by calling rng() or shuffle(A, A+n, rng)
inline long long rand(long long x, long long y) { return rng() % (y+1-x) + x; } //inclusivesss
string inline to_string(char c) {string s(1,c);return s;} template<typename T> inline T gcd(T a,T b){ return a==0?llabs(b):gcd(b%a,a); }

using ll=long long; 
using ld=long double;
#define FOR(i,s,e) for(ll i=s;i<=ll(e);++i)
#define DEC(i,s,e) for(ll i=s;i>=ll(e);--i)
using pi=pair<ll,ll>; using spi=pair<ll,pi>; using dpi=pair<pi,pi>; 

#define LLINF ((long long)1e18)
#define INF int(1e9+1e6)
#define MAXN (300006)
vector<int> X, Y, jy;
ll lvl, co=-1;
struct node {
	int s,e,m;
	ll v,state;
	node*l,*r;
	node(int S,int E){
		s=S,e=E,m=(s+e)>>1;
		v=0,state=0;
		if(s^e)l=new node(s,m),r=new node(m+1,e);
		else l=r=0;
	}
	void assign(int sz){
		if(sz<=0) return;
		if(s==e) {
			assert(sz==1);
			return;
		}
		int rs = e-m;
		r->assign(min(rs, sz));
		if(sz>rs) l->assign(sz-rs);
		else l=0;
	}
	ll trav() {
		if(s==e) {
			assert(v==0);
			v = jy.back(), jy.pop_back();
			return v;
		}
		if(v==0) {
			v = co --;
			X.eb(-1), Y.eb(-1);
		}
		if(state==0) state^=1, X[-v-1]=(!l?-1:(l->trav()));
		else state^=1, assert(r), Y[-v-1]=r->trav();
		return v;
	}
}*seg;
void create_circuit(int M, std::vector<int> A) {
	jy=A,jy.eb(0);
	vector<int> D(M+1,-1);
	DEC(i,25,0) if((1<<i) > siz(jy)) lvl=i;
	seg=new node(1, 1<<lvl);
	seg->assign(siz(jy));
	reverse(all(jy));
	while(jy.size()) seg->trav();
	answer(D,X,Y);
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 18 / 18
• Subtask 6: 56 / 56