Submission #497472

#	Time	Username	Problem	Language	Result	Execution time	Memory
497472		Ziel	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	17 / 100	3080 ms	73800 KiB

sortbooks

/**
 * LES GREATEABLES BRO TEAM
**/

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
#define sz(x) (int)x.size()
const bool FLAG = false;
void setIO(const string &f = "");

string to_string(const string s) {
	return '"' + s + '"';
}
string to_string(const char c) {
 	return char(39) + string(1, c) + char(39);
}
string to_string(const char* s) {
 	return to_string(string(s));
}
string to_string(bool f) {
	return (f ? "true" : "false");
}
template<class A, class B>
string to_string(const pair<A, B> x) {
	return "(" + to_string(x.first) + ", " + to_string(x.second) + ")";
}
template<class A, class B, class C>
string to_string(const tuple<A, B, C> x) {
	return "(" + to_string(get<0>(x)) + ", " + to_string(get<1>(x)) + ", " + to_string(get<2>(x)) + ")";
}
template<class A, class B, class C, class D>
string to_string(const tuple<A, B, C, D> x) {
	return "(" + to_string(get<0>(x)) + ", " + to_string(get<1>(x)) + ", " + to_string(get<2>(x)) + ", " + to_string(get<3>(x)) + ")";
}
template<class T>
string to_string(const T v) {
	string res = "{"; bool f = true;
	for (auto x: v)
		res += (f ? to_string(x) : ", " + to_string(x)), f = false;
	return res + "}";
}
void debug_args() { cerr << "]\n"; }
template<class H, class... T>
void debug_args(H x, T... y) {
	cerr << to_string(x);
	if (sizeof... (y))
	cerr << ", ";
	debug_args(y...);
}

#ifdef LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]: [", debug_args(__VA_ARGS__);
#else
#define debug(...) 47
#endif

#define int ll

const int N = 1e6 + 12456;
struct node {
	int mx1, mx2, mn, k;
} t[4 * N];
int a[N], n, q;

//find last smaller
int fls(int l, int r, int v, int x, int lx, int rx) {
	if (lx == rx) {
		if (l <= lx && rx <= r)
			return a[lx];
		return -1;
	}
	int mid = (lx + rx) / 2;
	ll res = -1;
	if (!(mid < l || r < lx) && t[2 * x + 1].mn < v)
		res = max(res, fls(l, r, v, 2 * x + 1, lx, mid));
	if (!(rx < l || r < mid + 1) && t[2 * x + 2].mn < v)
		res = max(res, fls(l, r, v, 2 * x + 2, mid + 1, rx));
	return res;
}
node unite(node a, node b, int bx, int blx, int brx, int l, int r) {
	node res;
	res.k = max(a.k, b.k);
	res.mn = min(a.mn, b.mn);

	if (a.mx1 > b.mx1) {
		res.mx1 = a.mx1;
		if (a.mx2 > b.mx1) {
			res.mx2 = a.mx2;
		} else {
			if (b.mx1 == a.mx1)
				res.mx2 = a.mx2;
			else
				res.mx2 = b.mx1;
		}
	} else {
		res.mx1 = b.mx1;
		if (b.mx2 > a.mx1) {
			res.mx2 = b.mx2;
		} else {
			if (a.mx1 == b.mx1)
				res.mx2 = b.mx2;
			else
				res.mx2 = a.mx1;
		}
	}

	if (a.mx1 <= b.mn)
		return res;
	if (a.mx1 > b.mx1) {
		res.k = max(res.k, a.mx1 + b.mx1);
		return res;
	} else {
		res.k = max(res.k, a.mx1 + fls(l, r, a.mx1, bx, blx, brx));
		return res;
	}
}
void build(int x = 0, int lx = 1, int rx = n) {
	if (lx == rx) {
		t[x].mx1 = a[lx];
		t[x].mx2 = 0;
		t[x].mn = a[lx];
		t[x].k = 0;
	} else {
		int mid = (lx + rx) / 2;
		build(2 * x + 1, lx, mid);
		build(2 * x + 2, mid + 1, rx);
		t[x] = unite(t[2 * x + 1], t[2 * x + 2], 2 * x + 2, mid + 1, rx, lx, rx);
	}
}
node get(int l, int r, int x = 0, int lx = 1, int rx = n) {
	if (r < lx || rx < l) return {-1, -1, -1, -1};
	if (l <= lx && rx <= r) return t[x];
	int mid = (lx + rx) / 2;
	node res1 = get(l, r, 2 * x + 1, lx, mid);
	node res2 = get(l, r, 2 * x + 2, mid + 1, rx);
	if (res1.mx1 == -1 && res2.mx1 == -1)
		assert(false);
	if (res1.mx1 == -1)
		return res2;
	if (res2.mx1 == -1)
		return res1;
	return unite(res1, res2, 2 * x + 2, mid + 1, rx, l, r);
}

void solve() {
	cin >> n >> q;
	for (int i = 1; i <= n; i++)
		cin >> a[i];
	build();
	while (q--) {
		int l, r, k;
		cin >> l >> r >> k;
		node res = get(l, r);
		cout << bool(res.k <= k) << '\n';
	}
}

signed main() {
    setIO();
    
    int tt = 1;
    if (FLAG) {
    	cin >> tt;
    }
    while (tt--) {
    	solve();
    }
    
    return 0;
}

void setIO(const string &f) {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    if (fopen((f + ".in").c_str(), "r")) {
        freopen((f + ".in").c_str(), "r", stdin);
        freopen((f + ".out").c_str(), "w", stdout);
    }
}

Compilation message (stderr)

sortbooks.cpp: In function 'void setIO(const string&)':
sortbooks.cpp:179:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  179 |         freopen((f + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:180:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  180 |         freopen((f + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23