oj.uz

Submission #485595

# Submission time Handle Problem Language Result Execution time Memory
485595 2021-11-08T12:59:07 Z cheissmart Bitaro, who Leaps through Time (JOI19_timeleap) C++14
0 / 100
 3000 ms 19212 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("trapv")
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define ALL(v) (v).begin(), (v).end()
 
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;
 
string _reset = "\u001b[0m", _yellow = "\u001b[33m", _bold = "\u001b[1m";
void DBG() { cerr << "]" << _reset << endl; }
template<class H, class...T> void DBG(H h, T ...t) {
	cerr << to_string(h);
	if(sizeof ...(t)) cerr << ", ";
	DBG(t...);
}
#ifdef CHEISSMART
#define debug(...) cerr << _yellow << _bold << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define debug(...)
#endif
 
const int INF = 1e9 + 7, N = 3e5 + 7;
 
int n, q;

struct node {
	int l, r, x, y;
	ll cost;
	bool type; //0: only l, r
	node(int _l = 0, int _r = 0) {
		l = _l, r = _r;
		x = y = 0, type = 0, cost = 0;
		assert(l <= r);
	}
	pair<int, ll> eval(int pos) {
		ll ans = 0;
		int pre = pos;
		pos = max(pos, l), pos = min(pos, r);
		ans += max(0, pre - pos);
		if(type) {
			ans += cost;
			pre = pos, pos = x;
			ans += max(0, pre - pos);
			pos = y;
		}
		return {pos, ans};
	}
	friend node operator + (node lhs, node rhs) {
		node res;
		if(lhs.type) { 
			res.l = lhs.l, res.r = lhs.r, res.x = lhs.x, res.type = 1;
			auto [pos, cost] = rhs.eval(lhs.y);
			res.cost = lhs.cost + cost;
			res.y = pos;
		} else {
			if(max(lhs.l, rhs.l) < min(lhs.r, rhs.r)) {
				res = rhs;
				res.l = max(lhs.l, rhs.l);
				res.r = min(lhs.r, rhs.r);
			} else {
				res.l = lhs.l, res.r = lhs.r, res.type = 1;
				if(rhs.l >= lhs.r) {
					res.x = rhs.l;
				} else {
					res.x = rhs.r;
				}
				tie(res.y, res.cost) = rhs.eval(res.x);
			}
		}
		return res;
	}
};

struct DS {
	node t[N * 4];
	void upd(int pos, node x, int v = 1, int tl = 0, int tr = n) {
		if(tr - tl == 1) {
			assert(pos == tl);
			t[v] = x;
			return;
		}
		int tm = (tl + tr) / 2;
		if(pos < tm)
			upd(pos, x, v * 2, tl, tm);
		else
			upd(pos, x, v * 2 + 1, tm, tr);
		t[v] = t[v * 2] + t[v * 2 + 1];
	}
	void upd(int i, int l, int r) {
		l -= i, r -= i;
		upd(i, node(l, r));
	}
	node qry(int l, int r, int v = 1, int tl = 0, int tr = n) {
		if(l <= tl && tr <= r)
			return t[v];
		int tm = (tl + tr) / 2;
		if(r <= tm)
			return qry(l, r, v * 2, tl, tm);
		else if(l >= tm)
			return qry(l, r, v * 2 + 1, tm, tr);
		else
			return qry(l, r, v * 2, tl, tm) + qry(l, r, v * 2 + 1, tm, tr);
	}
};


struct DS2 {
	node a[N];
	void upd(int pos, int l, int r) {
		l -= pos, r -= pos;
		a[pos] = node(l, r);
	}
	node qry(int l, int r) {
		assert(0 <= l && l < r && r <= n - 1);
		node u = a[l];
		for(int i = l + 1; i < r; i++)
			u = u + a[i];
		return u;
	}
};

DS2 t1, t2;
 
signed main()
{
	IO_OP;
 
	cin >> n >> q;
	for(int i = 0; i < n - 1; i++) {
		int l, r;
		cin >> l >> r;
		r--;
		t1.upd(i, l, r);
		t2.upd(n - i - 2, l, r);
	}
 
	while(q--) {
		int op;
		cin >> op;
		if(op == 1) {
			int p, l, r;
			cin >> p >> l >> r;
			r--, p--;
			t1.upd(p, l, r);
			t2.upd(n - p - 2, l, r);
		} else {
			int a, b, c, d;
			cin >> a >> b >> c >> d;
			a--, c--;
			if(a == c) {
				cout << max(b - d, 0) << '\n';
			} else if(a < c) {
				b -= a, d -= c;
				auto u = t1.qry(a, c);
				auto [pos, cost] = u.eval(b);
				cost += max(pos - d, 0);
				cout << cost << '\n';
			} else { // a > c
				a--;
				a = n - a - 2, c = n - c - 2;
				c++;
				b -= a, d -= c;
				auto u = t2.qry(a, c);
				auto [pos, cost] = u.eval(b);
				cost += max(pos - d, 0);
				cout << cost << '\n';
			}
		}
	}
 
}

Compilation message

timeleap.cpp: In function 'node operator+(node, node)':
timeleap.cpp:61:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   61 |    auto [pos, cost] = rhs.eval(lhs.y);
      |         ^
timeleap.cpp: In function 'int main()':
timeleap.cpp:164:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  164 |     auto [pos, cost] = u.eval(b);
      |          ^
timeleap.cpp:173:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  173 |     auto [pos, cost] = u.eval(b);
      |          ^

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19020 KB Output is correct
2 Correct 8 ms 19020 KB Output is correct
3 Correct 8 ms 19020 KB Output is correct
4 Correct 8 ms 19020 KB Output is correct
5 Correct 9 ms 19072 KB Output is correct
6 Correct 8 ms 19020 KB Output is correct
7 Correct 9 ms 19168 KB Output is correct
8 Correct 8 ms 19052 KB Output is correct
9 Correct 8 ms 19020 KB Output is correct
10 Correct 8 ms 19020 KB Output is correct
11 Correct 15 ms 19172 KB Output is correct
12 Correct 13 ms 19020 KB Output is correct
13 Correct 12 ms 19020 KB Output is correct
14 Correct 12 ms 19008 KB Output is correct
15 Correct 17 ms 19108 KB Output is correct
16 Correct 16 ms 19020 KB Output is correct
17 Correct 16 ms 19108 KB Output is correct
18 Correct 15 ms 19020 KB Output is correct
19 Correct 13 ms 19108 KB Output is correct
20 Correct 15 ms 19020 KB Output is correct
21 Incorrect 13 ms 19100 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3076 ms 19212 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 66.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19020 KB Output is correct
2 Correct 8 ms 19020 KB Output is correct
3 Correct 8 ms 19020 KB Output is correct
4 Correct 8 ms 19020 KB Output is correct
5 Correct 9 ms 19072 KB Output is correct
6 Correct 8 ms 19020 KB Output is correct
7 Correct 9 ms 19168 KB Output is correct
8 Correct 8 ms 19052 KB Output is correct
9 Correct 8 ms 19020 KB Output is correct
10 Correct 8 ms 19020 KB Output is correct
11 Correct 15 ms 19172 KB Output is correct
12 Correct 13 ms 19020 KB Output is correct
13 Correct 12 ms 19020 KB Output is correct
14 Correct 12 ms 19008 KB Output is correct
15 Correct 17 ms 19108 KB Output is correct
16 Correct 16 ms 19020 KB Output is correct
17 Correct 16 ms 19108 KB Output is correct
18 Correct 15 ms 19020 KB Output is correct
19 Correct 13 ms 19108 KB Output is correct
20 Correct 15 ms 19020 KB Output is correct
21 Incorrect 13 ms 19100 KB Output isn't correct
22 Halted 0 ms 0 KB -