結果

問題 No.1435 Mmm......
ユーザー leaf_1415leaf_1415
提出日時 2021-03-20 02:11:35
言語 C++11
(gcc 11.4.0)
結果
TLE  
実行時間 -
コード長 6,384 bytes
コンパイル時間 1,088 ms
コンパイル使用メモリ 99,036 KB
実行使用メモリ 17,148 KB
最終ジャッジ日時 2024-11-19 05:59:10
合計ジャッジ時間 40,703 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge4
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 8 ms
15,396 KB
testcase_01 AC 8 ms
15,452 KB
testcase_02 AC 8 ms
15,372 KB
testcase_03 AC 8 ms
15,404 KB
testcase_04 AC 8 ms
15,512 KB
testcase_05 AC 8 ms
15,516 KB
testcase_06 AC 1,330 ms
16,564 KB
testcase_07 AC 1,652 ms
16,656 KB
testcase_08 AC 1,941 ms
16,996 KB
testcase_09 AC 1,768 ms
16,836 KB
testcase_10 AC 1,506 ms
16,556 KB
testcase_11 AC 1,478 ms
16,620 KB
testcase_12 AC 1,365 ms
16,480 KB
testcase_13 AC 1,332 ms
16,516 KB
testcase_14 AC 970 ms
16,224 KB
testcase_15 TLE -
testcase_16 AC 1,635 ms
16,716 KB
testcase_17 AC 1,108 ms
16,440 KB
testcase_18 TLE -
testcase_19 AC 1,443 ms
16,540 KB
testcase_20 AC 1,837 ms
16,952 KB
testcase_21 TLE -
testcase_22 TLE -
testcase_23 TLE -
testcase_24 TLE -
testcase_25 TLE -
testcase_26 TLE -
testcase_27 TLE -
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ソースコード

diff # 

#include <iostream>
#include <cstdio>
#include <cmath>
#include <ctime>
#include <cstdlib>
#include <cassert>
#include <vector>
#include <list>
#include <stack>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <bitset>
#include <string>
#include <algorithm>
#include <utility>
#include <complex>
#define rep(x, s, t) for(llint (x) = (s); (x) <= (t); (x)++)
#define reps(x, s) for(llint (x) = 0; (x) < (llint)(s).size(); (x)++)
#define chmin(x, y) (x) = min((x), (y))
#define chmax(x, y) (x) = max((x), (y))
#define sz(x) ((ll)(x).size())
#define ceil(x, y) (((x)+(y)-1) / (y))
#define all(x) (x).begin(),(x).end()
#define outl(...) dump_func(__VA_ARGS__)
#define inf 1e18

using namespace std;

typedef long long llint;
typedef long long ll;
typedef pair<ll, ll> P;

struct edge{
	ll to, cost;
	edge(){}
	edge(ll a, ll b){ to = a, cost = b;}
};

const ll mod = 1000000007;
//const ll mod = 998244353;

struct mint{
	ll x = 0;
	mint(ll y = 0){x = y; if(x < 0 || x >= mod) x = (x%mod+mod)%mod;}
	mint(const mint &ope) {x = ope.x;}
	
	mint operator-(){return mint(-x);}
	mint operator+(const mint &ope){return mint(x) += ope;}
	mint operator-(const mint &ope){return mint(x) -= ope;}
	mint operator*(const mint &ope){return mint(x) *= ope;}
	mint operator/(const mint &ope){return mint(x) /= ope;}
	mint& operator+=(const mint &ope){
		x += ope.x;
		if(x >= mod) x -= mod;
		return *this;
	}
	mint& operator-=(const mint &ope){
		x += mod - ope.x;
		if(x >= mod) x -= mod;
		return *this;
	}
	mint& operator*=(const mint &ope){
		x *= ope.x, x %= mod;
		return *this;
	}
	mint& operator/=(const mint &ope){
		ll n = mod-2; mint mul = ope;
		while(n){
			if(n & 1) *this *= mul;
			mul *= mul;
			n >>= 1;
		}
		return *this;
	}
	mint inverse(){return mint(1) / *this;}
	bool operator ==(const mint &ope){return x == ope.x;}
	bool operator !=(const mint &ope){return x != ope.x;}
};
istream& operator >>(istream &is, mint &ope){
	ll t; is >> t, ope.x = t;
	return is;
}
ostream& operator <<(ostream &os, mint &ope){return os << ope.x;}
ostream& operator <<(ostream &os, const mint &ope){return os << ope.x;}

bool exceed(ll x, ll y, ll m){return x >= m / y + 1;}
void mark(){ cout << "*" << endl; }
void yes(){ cout << "Yes" << endl; }
void no(){ cout << "No" << endl; }
ll gcd(ll a, ll b){if(b == 0) return a; return gcd(b, a%b);}
ll modpow(ll a, ll n){
	if(n == 0) return 1;
	if(n % 2) return ((a%mod) * (modpow(a, n-1)%mod)) % mod;
	else return modpow((a*a)%mod, n/2) % mod;
}


template<typename T>
ostream& operator << (ostream& os, vector<T>& vec) {
	for(int i = 0; i < vec.size(); i++) {
		os << vec[i] << (i + 1 == vec.size() ? "" : " ");
	}
	return os;
}
template<typename T>
ostream& operator << (ostream& os, deque<T>& deq) {
	for(int i = 0; i < deq.size(); i++) {
		os << deq[i] << (i + 1 == deq.size() ? "" : " ");
	}
	return os;
}
template<typename T, typename U>
ostream& operator << (ostream& os, pair<T, U>& pair_var) {
	os << "(" << pair_var.first << ", " << pair_var.second << ")";
	return os;
}
template<typename T, typename U>
ostream& operator << (ostream& os, const pair<T, U>& pair_var) {
	os << "(" << pair_var.first << ", " << pair_var.second << ")";
	return os;
}
template<typename T, typename U>
ostream& operator << (ostream& os, map<T, U>& map_var) {
	for(typename map<T, U>::iterator itr = map_var.begin(); itr != map_var.end(); itr++) {
		os << "(" << itr->first << ", " << itr->second << ")";
		itr++;
		if(itr != map_var.end()) os << ",";
		itr--;
	}
	return os;
}
template<typename T>
ostream& operator << (ostream& os, set<T>& set_var) {
	for(typename set<T>::iterator itr = set_var.begin(); itr != set_var.end(); itr++) {
		os << *itr;
		++itr;
		if(itr != set_var.end()) os << " ";
		itr--;
	}
	return os;
}
template<typename T>
void outa(T a[], ll s, ll t)
{
	for(ll i = s; i <= t; i++){ cout << a[i]; if(i < t) cout << " ";}
	cout << endl;
}
void dump_func() {cout << endl;}
template <class Head, class... Tail>
void dump_func(Head &&head, Tail &&... tail) {
	cout << head;
	if(sizeof...(Tail) > 0) cout << " ";
	dump_func(std::move(tail)...);
}

struct SegTree{
	int size;
	vector<P> seg;
	
	SegTree(){}
	SegTree(int size){
		this->size = size;
		seg.resize(1<<(size+1));
	}
	
	P Ident(){  //identity element
		return P(inf, inf);
	}
	P ope(P a, P b){ //operator
		return min(a, b);
	}
	
	void init()
	{
		for(int i = 0; i < (1<<(size+1)); i++) seg[i] = Ident();
	}
	
	void update(int i, P val)
	{
		i += (1 << size);
		seg[i] = val;
		while(i > 1){
			i /= 2;
			seg[i] = ope(seg[i*2], seg[i*2+1]);
		}
	}

	P query(int a, int b, int k, int l, int r)
	{
		if(b < l || r < a) return Ident();
		if(a <= l && r <= b) return seg[k];
		P lval = query(a, b, k*2, l, (l+r)/2);
		P rval = query(a, b, k*2+1, (l+r)/2+1, r);
		return ope(lval, rval);
	}
	P query(int a, int b)
	{
		if(a > b) return Ident();
		return query(a, b, 1, 0, (1<<size)-1);
	}
};

struct SegTree2{
	int size;
	vector<llint> seg;
	
	SegTree2(){}
	SegTree2(int size){
		this->size = size;
		seg.resize(1<<(size+1));
	}
	
	llint Ident(){  //identity element
		return -inf;
	}
	llint ope(llint a, llint b){ //operator
		return max(a, b);
	}
	
	void init()
	{
		for(int i = 0; i < (1<<(size+1)); i++) seg[i] = Ident();
	}
	
	void update(int i, llint val)
	{
		i += (1 << size);
		seg[i] = val;
		while(i > 1){
			i /= 2;
			seg[i] = ope(seg[i*2], seg[i*2+1]);
		}
	}

	llint query(int a, int b, int k, int l, int r)
	{
		if(b < l || r < a) return Ident();
		if(a <= l && r <= b) return seg[k];
		llint lval = query(a, b, k*2, l, (l+r)/2);
		llint rval = query(a, b, k*2+1, (l+r)/2+1, r);
		return ope(lval, rval);
	}
	llint query(int a, int b)
	{
		if(a > b) return Ident();
		return query(a, b, 1, 0, (1<<size)-1);
	}
};

ll n;
ll a[200005];
SegTree seg(18);
SegTree2 seg2(18);

int main(void)
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n;
	rep(i, 1, n) cin >> a[i];
	
	seg.init(), seg2.init();
	rep(i, 1, n) seg.update(i, P(a[i], i)), seg2.update(i, a[i]);
	
	ll ans = 0;
	rep(i, 1, n-1){
		ll ub = n+1, lb = i+1, mid;
		while(ub-lb>1){
			mid = (ub+lb)/2;
			P res = seg.query(i, mid);
			ll pos = res.second;
			seg.update(pos, P(inf, inf));
			ll m1 = res.first, m2 = seg.query(i, mid).first, M = seg2.query(i, mid);
			seg.update(pos, P(a[pos], pos));
			if(m1+m2 >= M) lb = mid;
			else ub = mid;
		}
		ans += lb - i;
	}
	outl(ans);
	
	return 0;
}
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