Submission #320178

# Submission time Handle Problem Language Result Execution time Memory
320178 2020-11-07T21:01:59 Z arwaeystoamneg Monkey and Apple-trees (IZhO12_apple) C++17
100 / 100
761 ms 233956 KB
/*
ID: awesome35
LANG: C++14
TASK: vans
*/
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
#include<chrono>

using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, ll> pll;
// warning: ld is rougly 2x slower than double. Proof: ld: https://oj.uz/submission/319677 double: https://oj.uz/submission/319678
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pair<int, int>> vpi;
typedef vector<pair<ll, ll>> vpll;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define mp make_pair
#define rsz resize
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define f first
#define s second
//#define endl '\n'
#define test int testc;cin>>testc;while(testc--)
const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 }; // for every grid problem!!
const ll linf = 4000000000000000000LL;
const ll inf = 1000000007;//998244353
const ld pi = 3.1415926535;

void pv(vi a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vll a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vector<vi>a) {
	F0R(i, sz(a)) { cout << i << endl; pv(a[i]); cout << endl; }
}void pv(vector<vll>a) { F0R(i, sz(a)) { cout << i << endl; pv(a[i]); }cout << endl; }void pv(vector<string>a) { trav(x, a)cout << x << endl; cout << endl; }
void build_primes(vi& primes, int size)
{
	vi visited;
	visited.rsz(size, 0);
	FOR(i, 2, size)
	{
		if (visited[i] == 0)
		{
			primes.pb(i);
			int a = i;
			while (a < size)
			{
				visited[a] = 1;
				a += i;
			}
		}
	}
}
vector<vector<ll>> matrix_mult(vector<vector<ll>>& a, vector<vector<ll>>& b)
{
	int n = a.size();
	vector<vector<ll>> answer;
	answer.resize(n);
	for (int i = 0; i < n; i++) answer[i].resize(n, 0);
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++) // calculate answer[i][j]
		{
			for (int k = 0; k < n; k++)
				answer[i][j] = (answer[i][j] + a[i][k] * b[k][j]) % inf;
		}
	}
	return answer;
}
int modInverse(int a, int m)
{
	int m0 = m;
	int y = 0, x = 1;
	if (m == 1)
		return 0;
	while (a > 1)
	{
		// q is quotient 
		int q = a / m;
		int t = m;
		// m is remainder now, process same as 
		// Euclid's algo 
		m = a % m, a = t;
		t = y;
		// Update y and x 
		y = x - q * y;
		x = t;
	}
	// Make x positive 
	if (x < 0)
		x += m0;

	return x;
}
ll power(ll x, ll y)
{
	ll k = 1LL << 60;
	ll z = 1;
	while (k != 0)
	{
		z *= z;
		z %= inf;
		if (y >= k)
		{
			z *= x;
			z %= inf;
			y -= k;
		}
		k >>= 1;
	}
	return z;
}
struct point
{
	ld x, y;
	bool operator<(const point& rhs)const
	{
		if (x == rhs.x)return y < rhs.y;
		return x < rhs.x;
	}
};
struct pt
{
	ll x, y;
	bool operator<(const pt& rhs)const
	{
		if (x == rhs.x)return y < rhs.y;
		return x < rhs.x;
	}
};
// remember that you need to take abs
long double area(point x, point y, point z)
{
	return (x.y * y.x + y.y * z.x + z.y * x.x - x.x * y.y - y.x * z.y - z.x * x.y) / 2.0;
}
bool clockwise(point x, point y, point z)
{
	return area(x, y, z) > 0;
}
// remember that you need to take abs
long double area(pt x, pt y, pt z)
{
	return (x.y * y.x + y.y * z.x + z.y * x.x - x.x * y.y - y.x * z.y - z.x * x.y) / 2.0;
}
bool clockwise(pt x, pt y, pt z)
{
	return area(x, y, z) > 0;
}
ll gcd(ll a, ll b)
{
	if (a > b)swap(a, b);
	if (a == 0)return b;
	return gcd(a, b % a);
}
int popcount(ll a)
{
	int count = 0;
	while (a)
	{
		count += (a & 1);
		a >>= 1;
	}
	return count;
}
ll choose(ll n, ll r)
{
	ll p = 1, k = 1;
	if (n - r < r)
		r = n - r;
	if (r != 0) {
		while (r) {
			p *= n;
			k *= r;
			long long m = gcd(p, k);
			p /= m;
			k /= m;
			n--;
			r--;
		}
	}
	else
		p = 1;
	return p;
}
vll prefix_hash(string& a, vll& powers, ll mod)
{
	int n = sz(a);
	vll prefix(n + 1);
	F0R(i, n)prefix[i + 1] = (prefix[i] + powers[i] * (a[i] - '1' + 1)) % mod;
	return prefix;
}
struct custom_hash {
	static uint64_t splitmix64(uint64_t x) {
		// http://xorshift.di.unimi.it/splitmix64.c
		x += 0x9e3779b97f4a7c15;
		x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
		x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
		return x ^ (x >> 31);
	}
	//the return type was size_t. But isnt that problematic?
	uint64_t operator()(uint64_t x) const {
		static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
		return splitmix64(x + FIXED_RANDOM);
	}
};
struct custom_hash_fast {
	//the return type was size_t. But isnt that problematic?
	uint64_t operator()(uint64_t x) const {
		static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
		x ^= FIXED_RANDOM;
		return x ^ (x >> 16);
	}
};
const int MAX = (1 << 30) - 1;
class sum_range_tree
{
	struct node
	{
		int val;
		bool update_;
		struct node* C[2];
		node()
		{
			val = 0;
			C[0] = NULL;
			C[1] = NULL;
			update_ = 0;
		}
		node* getc(int c)
		{
			if (C[c] == NULL)
			{
				C[c] = new node;
			}
			return C[c];
		}
		void push(int l, int r)
		{
			if (update_)
			{
				val = r - l + 1;
				if (l != r)
				{
					getc(0)->update_ = 1;
					getc(1)->update_ = 1;
				}
				update_ = 0;
			}
		}
		void update(int ul, int ur, int l, int r)
		{
			push(l, r);
			if (ul > r || ur < l)return;
			if (l >= ul && r <= ur)
			{
				update_ = 1;
				push(l, r);
				return;
			}
			int mid = ((l + r < 0) ? (l + r - 1) / 2 : (l + r) / 2);
			if (ul > mid)
			{
				getc(1)->update(ul, ur, mid + 1, r);
				getc(0)->push(l, mid);
			}
			else if (ur <= mid)
			{
				getc(0)->update(ul, ur, l, mid);
				getc(1)->push(mid + 1, r);
			}
			else
			{
				getc(0)->update(ul, ur, l, mid);
				getc(1)->update(ul, ur, mid + 1, r);				
			}
			val = (C[0] ? C[0]->val : 0) + (C[1] ? C[1]->val : 0);
		}
		// sl and sr are tl and tr
		int query(int ql, int qr, int sl, int sr)
		{
			push(sl, sr);
			if (sl >= ql && sr <= qr)
				return val;
			else if (sr<ql || sl>qr)
				return 0;
			int mid = ((sl + sr < 0) ? (sl + sr - 1) / 2 : (sl + sr) / 2);
			if (ql > mid)return getc(1)->query(ql, qr, mid + 1, sr);
			else if (qr <= mid)return getc(0)->query(ql, qr, sl, mid);
			else return (C[0] ? C[0]->query(ql, qr, sl, mid) : 0) + (C[1] ? C[1]->query(ql, qr, mid + 1, sr) : 0);
		}
	};
	node* top;
public:void build()
{
	top = new node;
}
public:void update(int tl, int tr)
{
	top->update(tl, tr, 0, MAX);
}
public:int query(int l, int r)
{
	return top->query(l, r, 0, MAX);
}
};
void setIO(string s) {
	ios_base::sync_with_stdio(0); cin.tie(0);
	if (sz(s))
	{
		freopen((s + ".in").c_str(), "r", stdin);
		if (s != "test3")
			freopen((s + ".out").c_str(), "w", stdout);
	}
}
int main()
{
	setIO("");
	sum_range_tree sum;
	sum.build();
	int C = 0;
	test
	{
		int a,b;
	cin >> a;
	if (a == 1)
	{
		cin >> a >> b;
		a += C;
		b += C;
		C = sum.query(a, b);
		cout << C << endl;
	}
	else
	{
		cin >> a >> b;
		a += C;
		b += C;
		sum.update(a, b);
	}
	}
}

Compilation message

apple.cpp: In function 'void setIO(std::string)':
apple.cpp:320:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  320 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
apple.cpp:322:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  322 |    freopen((s + ".out").c_str(), "w", stdout);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 7 ms 512 KB Output is correct
4 Correct 28 ms 5468 KB Output is correct
5 Correct 35 ms 6500 KB Output is correct
6 Correct 33 ms 6464 KB Output is correct
7 Correct 37 ms 6600 KB Output is correct
8 Correct 246 ms 47836 KB Output is correct
9 Correct 485 ms 79572 KB Output is correct
10 Correct 549 ms 91224 KB Output is correct
11 Correct 528 ms 98732 KB Output is correct
12 Correct 534 ms 102056 KB Output is correct
13 Correct 497 ms 122824 KB Output is correct
14 Correct 517 ms 124388 KB Output is correct
15 Correct 743 ms 227096 KB Output is correct
16 Correct 751 ms 228580 KB Output is correct
17 Correct 501 ms 128644 KB Output is correct
18 Correct 503 ms 128612 KB Output is correct
19 Correct 746 ms 233700 KB Output is correct
20 Correct 761 ms 233956 KB Output is correct