Submission #1306585

#	Time	Username	Problem	Language	Result	Execution time	Memory
1306585		vlomaczk	Bitaro, who Leaps through Time (JOI19_timeleap)	C++20	100 / 100	487 ms	70452 KiB

timeleap

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
typedef long long ll;
using namespace __gnu_pbds;
using namespace std;

template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

ll n;
int base = 1<<19;
vector<pair<pair<ll, ll>, pair<ll, ll>>> T(2*base, {{-1,-1},{-1,1}}), T2(2*base, {{-1,-1},{-1,1}});

pair<pair<ll, ll>, pair<ll, ll>> merge(pair<pair<ll, ll>, pair<ll, ll>> a, pair<pair<ll, ll>, pair<ll, ll>> b) {
	auto[l1,r1] = a.first;
	auto[l2,r2] = b.first;
	auto[c1, ile1] = a.second;
	auto[c2, ile2] = b.second;
	if(l1==-1) return b;
	if(l2==-1) return a;
	l2 -= ile1; r2 -= ile1;
	if(l2 > r1) {
		return {{r1,r1}, {c1+c2, ile1+ile2 + l2-r1}};
	} else if(l1 > r2) {
		return {{l1,l1}, {c1+c2+l1-r2, ile1+ile2 - (l1-r2)}};
	} else {
		return {{max(l1,l2), min(r1,r2)}, {c1+c2, ile1+ile2}};
	}
}

void update(int v, int s, int e) {
	int v2 = v;
	v += base;
	T[v] = {{s, e-1}, {0, 1}};
	v/=2;
	while(v>0) {
		T[v] = merge(T[v+v], T[v+v+1]);
		v/=2;
	}

	v=n-v2;
	v+=base;
	T2[v] = {{s, e-1}, {0, 1}};
	v/=2;
	while(v>0) {
		T2[v] = merge(T2[v+v], T2[v+v+1]);
		v/=2;
	}
}

void pr(pair<pair<ll, ll>, pair<ll, ll>> x) {
	cout << x.first.first << " " << x.first.second << " " << x.second.first << " " << x.second.second;
}

pair<pair<ll, ll>, pair<ll, ll>> query(int a, int b) {
	if(a==b) return T[a];
	if(a < b) {
		--b;
		a += base-1;
		b += base+1;
		pair<pair<ll, ll>, pair<ll, ll>> ans = {{-1,-1},{-1,0}};
		vector<pair<pair<ll, ll>, pair<ll, ll>>> right;
		while(a/2 != b/2) {
			if(a%2==0) {
				ans = merge(ans, T[a+1]);
				// cout << "-> "; pr(T2[a+1]); cout << "\n";
				// cout << "ans = "; pr(ans); cout << "\n";
			}
			if(b%2==1) {
				// ans = merge(ans, T2[b-1]);
				right.push_back(T[b-1]);
			}
			a/=2; b/=2;
		}
		while(right.size()) {
			ans = merge(ans, right.back());
			// cout << "-> "; pr(right.back()); cout << "\n";
			right.pop_back();
		}
		return ans;
	} else {
		a = n-a+1;
		b = n-b+1;
		--b;
		a += base-1;
		b += base+1;
		pair<pair<ll, ll>, pair<ll, ll>> ans = {{-1,-1},{-1,0}};
		vector<pair<pair<ll, ll>, pair<ll, ll>>> right;
		while(a/2 != b/2) {
			if(a%2==0) {
				ans = merge(ans, T2[a+1]);
				// cout << "-> "; pr(T2[a+1]); cout << "\n";
				// cout << "ans = "; pr(ans); cout << "\n";
			}
			if(b%2==1) {
				// ans = merge(ans, T2[b-1]);
				right.push_back(T2[b-1]);
			}
			a/=2; b/=2;
		}
		while(right.size()) {
			ans = merge(ans, right.back());
			// cout << "-> "; pr(right.back()); cout << "\n";
			right.pop_back();
		}
		// cout << "\n";
		return ans;
	}
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	int q;
	cin >> n >> q;
	for(int i=1; i<n; ++i) {
		int s, e;
		cin >> s >> e;
		update(i, s, e);
	}
	while(q--) {
		int t; cin >> t;
		if(t==1) {
			int p, s, e;
			cin >> p >> s >> e;
			update(p,s,e);
		} else {
			int a,b,c,d;
			cin >> a >> b >> c >> d;
			if(a==c) {
				cout << max(0, b-d) << "\n";
				continue;
			}
			auto[stat, stat2] = query(a, c);
			auto[l, r] = stat;
			auto[cost, ile] = stat2;
			// cout << l << " " << r << " " << cost << " " << ile << "\n";
			ll time = b;
			ll res = 0;
			if(time < l) time = l;
			else if(time > r) {
				res += time-r;
				time = r;
			}
			res += cost;
			time += ile;
			res += max(0LL, time-d);
			cout << res << "\n";
		}
	}

	return 0;
}

• Subtask 1: 4 / 4
• Subtask 2: 30 / 30
• Subtask 3: 66 / 66