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답안 #368149

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
368149 2021-02-19T16:34:48 Z cheissmart Happiness (Balkan15_HAPPINESS) C++14
0 / 100
 1 ms 364 KB 
#include "happiness.h"
#include <bits/stdc++.h>
#define F first
#define S second
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define V vector
#define ALL(v) (v).begin(), (v).end()
#define debug(x) cerr << "LINE(" << __LINE__ << ") -> " << #x << " is " << (x) << endl

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7;
const ll oo = 1e18;

ll C;

struct node { // maintain min{ a_i - s_{i - 1} }
	ll s, mn, lz_add;
	node *l, *r;
	node() {
		l = r = nullptr;
		s = lz_add = 0;
		mn = oo;
	}
};

node* root = nullptr;

void pull(node* t) {
	assert(t && t -> l && t -> r);
	t -> mn = min(t -> l -> mn, t -> r -> mn);
}

void apply(node* &t, ll val) { // add val
	if(!t) t = new node();
	t -> mn += val;
	t -> lz_add += val;
	t -> s += val;
}

void push(node* t) {
	assert(t);
	apply(t -> l, t -> lz_add);
	apply(t -> r, t -> lz_add);
	t -> lz_add = 0;
}

ll qsum(node* t, ll pos, ll tl = 0, ll tr = C) {
	if(!t) return 0;
	if(tr - tl == 1) {
		assert(pos == tl);
		return t -> s;
	}
	push(t);
	ll tm = (tl + tr) / 2;
	if(pos < tm) return qsum(t -> l, pos, tl, tm);
	else return qsum(t -> r, pos, tm, tr);
}

void set_mn(node* &t, ll pos, ll val, ll tl = 0, ll tr = C) {
	if(!t) t = new node();
	if(tr - tl == 1) {
		assert(pos == tl);
		t -> mn = val;
		return;
	}
	push(t);
	int tm = (tl + tr) / 2;
	if(pos < tm) set_mn(t -> l, pos, val, tl, tm);
	else set_mn(t -> r, pos, val, tm, tr);
	pull(t);
}

void add(node* &t, ll l, ll r, ll val, ll tl = 0, ll tr = C) {
	if(!t) t = new node();
	if(l <= tl && tr <= r) {
		apply(t, val);
		return;
	}
	push(t);
	int tm = (tl + tr) / 2;
	if(l < tm) add(t -> l, l, r, val, tl, tm);
	if(r > tm) add(t -> r, l, r, val, tm, tr);
	pull(t);
}

map<int, int> cnt;

void add_coins(ll val) {
	assert(val < C);
	ll cur = qsum(root, val) - val;
	set_mn(root, val, cur);
	if(val + 1 < C)
		add(root, val + 1, C, val);
	cnt[val]++;
}

void del_coins(ll val) {
	assert(val < C);
	assert(cnt[val]);
	if(val + 1 < C)
		add(root, val + 1, C, -val);
	cnt[val]--;
	if(cnt[val] == 0)
		set_mn(root, val, oo);
}

bool happy() {
	assert(root);
	if(root -> mn < -1 || cnt[1] == 0) return false;
	else return true;
}

void free_mem(node* t) {
	if(!t) return;
	free_mem(t -> l);
	free_mem(t -> r);
	delete t;
}

bool init(int coinsCount, long long maxCoinSize, long long coins[]) {
	cnt.clear();
	free_mem(root);
	root = nullptr;

	C = maxCoinSize + 1;
	for(int i = 0; i < coinsCount; i++) {
		add_coins(coins[i]);
	}
	return happy();
}

bool is_happy(int event, int coinsCount, long long coins[]) {
	if(event == 1) { // add
		for(int i = 0; i < coinsCount; i++)
			add_coins(coins[i]);
	} else { // del
		for(int i = 0; i < coinsCount; i++)
			del_coins(coins[i]);
	}
	return happy();
}

Compilation message

grader.cpp: In function 'int main()':
grader.cpp:16:12: warning: unused variable 'max_code' [-Wunused-variable]
   16 |  long long max_code;
      |            ^~~~~~~~

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -