Submission #387632

#	Time	Username	Problem	Language	Result	Execution time	Memory
387632		talant117408	New Home (APIO18_new_home)	C++17	0 / 100	5069 ms	55900 KiB

new_home

/*
    Code written by Talant I.D.
*/
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
 
#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) int((v).size())
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define OK cout << "OK" << endl;
 
int mod;
 
ll mode(ll a) {
    a %= mod;
    if (a < 0) a += mod;
    return a;
}
 
ll subt(ll a, ll b) {
    return mode(mode(a)-mode(b));
}
 
ll add(ll a, ll b) {
    return mode(mode(a)+mode(b));
}
 
ll mult(ll a, ll b) {
    return mode(mode(a)*mode(b));
}
 
ll binpow(ll a, ll b, ll m) {
    ll res = 1;
    while (b) {
        if (b&1) res = ((res*a)%m+m)%m;
        a = ((a*a)%m+m)%m;
        b >>= 1;
    }
    return res;
}
  
void usaco(string s) {
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

const int N = 3e5+7;
int ans[N];
multiset <int> pos[N];

int main() {
	do_not_disturb
    //~ usaco("marathon");
	
	int n, q, k;
	cin >> n >> k >> q;
	
	vector <pair <pii, pii>> v;
	for (int i = 0; i < n; i++) {
		int x, type, a, b;
		cin >> x >> type >> a >> b;
		v.pb(mp(mp(a, b), mp(x, type)));
	}
	
	vector <pair <pii, int>> queries;
	for (int i = 0; i < q; i++) {
		int x, year;
		cin >> x >> year;
		queries.pb(mp(mp(year, x), i));
	}
	
	auto cmp = [&](pair <pii, pii> a, pair <pii, pii> b) {
		if (a.first.first == b.first.first) return a.first.second < b.first.second;
		return a.first.first < b.first.first;
	};
	sort(all(queries)); sort(all(v), cmp);
	
	int ind = 0;
	set <pair <int, pii>> endtimes;
	
	for (int i = 0; i < q; i++) {
		int year = queries[i].first.first, x = queries[i].first.second, i1 = queries[i].second;
		while (sz(endtimes) && (*endtimes.begin()).first < year) {
			auto it = *endtimes.begin();
			pos[it.second.second].erase(pos[it.second.second].find(it.second.first));
			endtimes.erase(endtimes.begin());
		}
		while (ind < n && v[ind].first.first <= year) {
			if (v[ind].first.second >= year) {
				pos[v[ind].second.second].insert(v[ind].second.first);
				endtimes.insert(mp(v[ind].first.second, mp(v[ind].second.first, v[ind].second.second)));
			}
			ind++;
		}
		int mx = 0;
		for (int j = 1; j <= k; j++) {
			auto it = lb(all(pos[j]), x);
			int it1 = 1e9+5e8, it2 = 1e9+5e8;
			if (it != pos[j].end()) {
				it1 = abs(*it-x);
			}
			if (it != pos[j].begin()) {
				it--;
				it2 = abs(*it-x);
			}
			mx = max(mx, min(it1, it2));
		}
		ans[i1] = (mx >= 1e9 ? -1 : mx);
	}
	
	for (int i = 0; i < q; i++) cout << ans[i] << endl;
	
    return 0;
}
/*
4 2 4
3 1 1 10
9 2 2 4
7 2 5 7
4 1 8 10
5 3
5 6
5 9
1 10


2 1 3
1 1 1 4
1 1 2 6
1 3
1 5
1 7
*/

Compilation message (stderr)

new_home.cpp: In function 'void usaco(std::string)':
new_home.cpp:57:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   57 |     freopen((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:58:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   58 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35
• Subtask 6: 0 / 20