Submission #637709

#	Time	Username	Problem	Language	Result	Execution time	Memory
637709		IWTIM	Plahte (COCI17_plahte)	C++17	0 / 160	143 ms	43456 KiB

plahte

# include <bits/stdc++.h>
using namespace std;
using ll = long long;
using db = long double;	// or double, if TL is tight
using str = string;	// yay python! 
 
// pairs
using pii = pair<int, int> ;
using pl = pair<ll, ll> ;
using pd = pair<db, db> ;
 
#define mp make_pair
#define f first
#define s second
#define tcT template < class T
#define tcTU tcT, class U
// ^ lol this makes everything look weird but I'll try it
tcT > using V = vector<T> ;
tcT, size_t SZ > using AR = array<T, SZ> ;
using vi = V<int> ;
using vb = V<bool> ;
using vl = V<ll> ;
using vd = V<db> ;
using vs = V<str> ;
using vpi = V<pii> ;
using vpl = V<pl> ;
using vpd = V<pd> ;
 
// vectors
// oops size(x), rbegin(x), rend(x) need C++17
#define sz(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) x.rbegin(), x.rend()
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define pb push_back
#define eb emplace_back
#define ft front()
#define bk back()
#define lb lower_bound
#define ub upper_bound
#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 rep(a) F0R(_, a)
#define each(a, x) for (auto &a: x)
	const int MOD = 998244353;
const int MX = 2e5 + 5;
const ll BIG = 1e18;	// not too close to LLONG_MAX
const db PI = acos((db) - 1);
const int dx[4]
{
	1, 0, -1, 0
}, dy[4]
{
	0, 1, 0, -1
};	// for every grid problem!!
mt19937 rng((uint32_t) chrono::steady_clock::now().time_since_epoch().count());
template < class T > using pqg = priority_queue<T, vector < T>, greater < T>> ;
struct DSU
{
	vi e;
	void init(int N)
	{
		e = vi(N, -1);
	}
 
	int get(int x)
	{
		return e[x] < 0 ? x : e[x] = get(e[x]);
	}
 
	bool sameSet(int a, int b)
	{
		return get(a) == get(b);
	}
 
	int size(int x)
	{
		return -e[get(x)];
	}
 
	bool unite(int x, int y)
	{
		// union by size
		x = get(x), y = get(y);
		if (x == y) return 0;
		if (e[x] > e[y]) swap(x, y);
		e[x] += e[y];
		e[y] = x;
		return 1;
	}
};
/*
inline namespace Helpers {
	//////////// is_iterable
	// https://stackoverflow.com/questions/13830158/check-if-a-variable-type-is-iterable
	// this gets used only when we can call begin() and end() on that type
	tcT, class = void > struct is_iterable : false_type {};
	tcT > struct is_iterable<T, void_t<decltype(begin(declval < T>())),
	                                  decltype(end(declval < T>()))
	                                 >
	                       > : true_type {};
	tcT > constexpr bool is_iterable_v = is_iterable<T>::value;
 
	//////////// is_readable
	tcT, class = void > struct is_readable : false_type {};
	tcT > struct is_readable<T,
	        typename std::enable_if_t<
	            is_same_v < decltype(cin >> declval<T&>()), istream&>
	        >
	    > : true_type {};
	tcT > constexpr bool is_readable_v = is_readable<T>::value;
 
	//////////// is_printable
	//	// https://nafe.es/posts/2020-02-29-is-printable/
	tcT, class = void > struct is_printable : false_type {};
	tcT > struct is_printable<T,
	        typename std::enable_if_t<
	            is_same_v < decltype(cout <<declval < T>()), ostream&>
	        >
	    > : true_type {};
	tcT > constexpr bool is_printable_v = is_printable<T>::value;
}*/
using ll = long long;
using db = long double;	// or double, if TL is tight
using str = string;	// yay python! 
 
// pairs
using pii = pair<int, int> ;
using pl = pair<ll, ll> ;
using pd = pair<db, db> ;
 
#define mp make_pair
#define f first
#define s second
#define tcT template < class T
#define tcTU tcT, class U
// ^ lol this makes everything look weird but I'll try it
tcT > using V = vector<T> ;
tcT, size_t SZ > using AR = array<T, SZ> ;
using vi = V<int> ;
using vb = V<bool> ;
using vl = V<ll> ;
using vd = V<db> ;
using vs = V<str> ;
using vpi = V<pii> ;
using vpl = V<pl> ;
using vpd = V<pd> ;
 
// vectors
// oops size(x), rbegin(x), rend(x) need C++17
#define sz(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) x.rbegin(), x.rend()
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define pb push_back
#define eb emplace_back
#define ft front()
#define bk back()
#define lb lower_bound
#define ub upper_bound
#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 rep(a) F0R(_, a)
#define each(a, x) for (auto &a: x)
	template < class T > using pqg = priority_queue<T, vector < T>, greater < T>> ;
 
/*
inline namespace Helpers {
	//////////// is_iterable
	// https://stackoverflow.com/questions/13830158/check-if-a-variable-type-is-iterable
	// this gets used only when we can call begin() and end() on that type
	tcT, class = void > struct is_iterable : false_type {};
	tcT > struct is_iterable<T, void_t<decltype(begin(declval < T>())),
	                                  decltype(end(declval < T>()))
	                                 >
	                       > : true_type {};
	tcT > constexpr bool is_iterable_v = is_iterable<T>::value;
 
	//////////// is_readable
	tcT, class = void > struct is_readable : false_type {};
	tcT > struct is_readable<T,
	        typename std::enable_if_t<
	            is_same_v < decltype(cin >> declval<T&>()), istream&>
	        >
	    > : true_type {};
	tcT > constexpr bool is_readable_v = is_readable<T>::value;
 
	//////////// is_printable
	//	// https://nafe.es/posts/2020-02-29-is-printable/
	tcT, class = void > struct is_printable : false_type {};
	tcT > struct is_printable<T,
	        typename std::enable_if_t<
	            is_same_v < decltype(cout <<declval < T>()), ostream&>
	        >
	    > : true_type {};
	tcT > constexpr bool is_printable_v = is_printable<T>::value;
}*/

const int N = 3e5 + 5;
int t,n,m,a[N],x[N],y[N],xt[N],yt[N],par[N],xx[N],yy[N];
vector <pii> vx;
set < pii > s;
int check(int up, int d) {
	return (x[up] <= x[d] && y[up] <= y[d] && xt[up] >= xt[d] && yt[up] >= yt[d]);
}
int tree[4 * N], lazy[4 * N];
int merge(int a, int b) {
	return max(a,b);
}
void build(int node, int le, int ri) {
	lazy[node] = -1; tree[node] = 0;
	if (le == ri) {
		return ;
	}
	int mid = (le + ri) / 2;
	build(2 * node,le,mid);
	build(2 * node + 1, mid + 1, ri);
}
void push(int node, int le, int ri) {
	if (lazy[node] == -1) return ;
	tree[node] = lazy[node];
	if (le != ri) {
    	lazy[2 * node] = lazy[node];
    	lazy[2 * node + 1] = lazy[node];
	}
	lazy[node] = -1;
}
void update(int node, int le, int ri, int start, int end, int val) {
	push(node,le,ri);
	if (le > end || ri < start) return ;
	if (le >= start && ri <= end) {
		lazy[node] = val;
		push(node,le,ri);
		return ;
	}
	int mid = (le + ri) / 2;
	update(2 * node,le,mid,start,end,val);
	update(2 * node + 1, mid + 1, ri, start, end,val);
	tree[node] = merge(tree[2 * node], tree[2 * node + 1]);
}
int getans(int node, int le, int ri, int start, int end) {
	push(node,le,ri);
	if (le > end || ri < start) return 0;
	if (le >= start && ri <= end) {
		return tree[node];
	}
	int mid = (le + ri) / 2;
	return merge(getans(2 * node, le, mid,start,end), getans(2 * node + 1, mid + 1, ri, start, end));
}
vector <int> v[N];
set <int> sc[N];
int ans[N],col[N];
void dfs(int a, int p) {
	for (int to : v[a]) {
		if (to == p) continue;
		dfs(to,a);
		if (sc[a].size() < sc[to].size()) swap(sc[a],sc[to]);
		for (int x : sc[to]) sc[a].insert(x);
	}
	ans[a] = sc[a].size();
}
main() {
    ios_base::sync_with_stdio(false),
    cin.tie(NULL),cout.tie(NULL);
    cin>>n>>m;
    vector <int> tocomp;
    for(int i = 1; i <= n; i++) {
    	cin>>x[i]>>y[i]>>xt[i]>>yt[i];
    	vx.pb({x[i],i});
    	vx.pb({xt[i] + 1,-i});
	}
	sort(vx.begin(),vx.end());
	for (int i = 0; i < vx.size(); i++) {
		int id = abs(vx[i].s);
		if (vx[i].s > 0) {
			auto it = s.upper_bound({yt[id], 0});
			if (it == s.end()) {
				par[id] = -1;
			}
			else {
				int x = (*it).s;
				if (check(x, id)) {
					par[id] = x;
				} else {
					par[id] = par[x];
				}
			}
			s.insert({yt[id], id});
		} else {
			s.erase({yt[id], id});
		}
	}
	for (int i = 1; i <= n; i++) {
	    if (par[i] == -1) {
	        par[i] = 0;
	    }
	    v[par[i]].pb(i);
	    //cout<<i<<" "<<par[i]<<"\n";
	}
	vector <pii> colx;
	for (int i = 1; i <= m; i++){
	    cin>>xx[i]>>yy[i]>>col[i];
	    colx.pb({xx[i], i});
	}
	set <int> s;
	int cur = 0;
	int mx = 200000;
	sort(colx.begin(),colx.end());
	build(1,1,mx);
	for (pii p : colx) {
	    int x = p.f; 
	    //cout<<"Point "<<p.f<<" "<<yy[p.s]<<"\n";
	    while (cur < vx.size() && vx[cur].f <= x) {
	        int id = abs(vx[cur].s);
	        //cout<<id<<" ";
	        if (vx[cur].s > 0) {
	            //cout<<y[id]<<" + "<<yt[id]<<" "<<endl;
	            update(1,1,mx,y[id],yt[id],id);
	        } else {
	            update(1,1,mx,y[id],yt[id],0);
	            //cout<<y[id]<<" - "<<yt[id]<<"\n";
	            if (par[id]) update(1,1,mx,y[id],yt[id],par[id]);//, cout<<y[id]<<" "<<yt[id]<<"\n";
	        }
	        cur++;
	    }
	    
	    int rect = getans(1,1,mx,yy[p.s],yy[p.s]);
	    if (rect) sc[rect].insert(col[p.s]);
	}
	dfs(0, -1);
	for (int i = 1; i <= n ;i++) {
	    cout<<ans[i]<<"\n";
	}
}

Compilation message (stderr)

plahte.cpp:272:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  272 | main() {
      | ^~~~
plahte.cpp: In function 'int main()':
plahte.cpp:283:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  283 |  for (int i = 0; i < vx.size(); i++) {
      |                  ~~^~~~~~~~~~~
plahte.cpp:323:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  323 |      while (cur < vx.size() && vx[cur].f <= x) {
      |             ~~~~^~~~~~~~~~~

• Subtask 1: 0 / 32
• Subtask 2: 0 / 32
• Subtask 3: 0 / 32
• Subtask 4: 0 / 32
• Subtask 5: 0 / 32