Submission #278009

#	Time	Username	Problem	Language	Result	Execution time	Memory
278009		arnold518	Happiness (Balkan15_HAPPINESS)	C++14	60 / 100	2131 ms	367808 KiB

happiness

#pragma GCC optimize ("O3")
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const ll INF = 1e18;
const int MAXVAL = 8e6;

ll M;
map<ll, int> MM;

struct Node
{
	ll val, lazy;
	int lc, rc;
	Node() : val(0), lazy(0), lc(-1), rc(-1) {} 
};

Node nodes[MAXVAL];
vector<int> pool;

int newNode()
{
	int t=pool.back(); pool.pop_back();
	return t;
}

void deleteNode(int node)
{
	pool.push_back(node);
	nodes[node]=Node();
}	

void busy(int node, ll tl, ll tr)
{
	if(nodes[node].lazy==0) return;
	nodes[node].val+=nodes[node].lazy;
	if(tl!=tr)
	{
		if(nodes[node].lc==-1) nodes[node].lc=newNode();
		nodes[nodes[node].lc].lazy+=nodes[node].lazy;
		if(nodes[node].rc==-1) nodes[node].rc=newNode();
		nodes[nodes[node].rc].lazy+=nodes[node].lazy;
	}
	nodes[node].lazy=0;
}

void update(int node, ll tl, ll tr, ll l, ll r, ll k)
{
	if(r<tl || tr<l) return;
	if(l<=tl && tr<=r)
	{
		nodes[node].lazy+=k;
		return;
	}

	ll mid=tl+tr>>1;

	if(l<=mid)
	{
		if(nodes[node].lc==-1) nodes[node].lc=newNode();
		update(nodes[node].lc, tl, mid, l, r, k);
	}
	if(mid+1<=r)
	{
		if(nodes[node].rc==-1) nodes[node].rc=newNode();
		update(nodes[node].rc, mid+1, tr, l, r, k);
	}

	nodes[node].val=INF;
	if(nodes[node].lc!=-1) nodes[node].val=min(nodes[node].val, nodes[nodes[node].lc].val+nodes[nodes[node].lc].lazy);
	if(nodes[node].rc!=-1) nodes[node].val=min(nodes[node].val, nodes[nodes[node].rc].val+nodes[nodes[node].rc].lazy);
}

int root;

ll query()
{
	return nodes[root].val+nodes[root].lazy;
}

void push(ll x)
{
	update(root, 1, M, x+1, M, x);
	MM[x]++;
	if(MM[x]==1)
	{
		auto it=MM.find(x);
		ll val=-x;
		if(next(it)!=MM.end()) val+=next(it)->first;
		update(root, 1, M, prev(it)->first+1, x, val);
	}
}

void pop(ll x)
{
	update(root, 1, M, x+1, M, -x);
	MM[x]--;
	if(MM[x]==0)
	{
		auto it=MM.find(x);
		ll val=x;
		if(next(it)!=MM.end()) val-=next(it)->first;
		update(root, 1, M, prev(it)->first+1, x, val);
		MM.erase(x);
	}
}

bool init(int coinsCount, ll maxCoinSize, ll coins[])
{	
	for(int i=0; i<MAXVAL; i++) pool.push_back(i);
	M=maxCoinSize;
	root=newNode();
	MM[0];

	for(int i=0; i<coinsCount; i++) push(coins[i]);
	return query()>=-1;
}

bool is_happy(int event, int coinsCount, ll coins[])
{
	if(event == -1) for(int i=0; i<coinsCount; i++) pop(coins[i]);
	else for(int i=0; i<coinsCount; i++) push(coins[i]);
	return query()>=-1;
}

Compilation message (stderr)

happiness.cpp: In function 'void update(int, ll, ll, ll, ll, ll)':
happiness.cpp:64:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   64 |  ll mid=tl+tr>>1;
      |         ~~^~~
grader.cpp: In function 'int main()':
grader.cpp:16:12: warning: unused variable 'max_code' [-Wunused-variable]
   16 |  long long max_code;
      |            ^~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 0 / 40