Submission #671374

#	Time	Username	Problem	Language	Result	Execution time	Memory
671374		4EVER	Sunčanje (COCI18_suncanje)	C++11	130 / 130	1584 ms	240824 KiB

suncanje

/******************************
*    author : @hihihihi       *
*    date : 13 / 12 / 2022    *
******************************/

#include <bits/stdc++.h>
// #pragma GCC optimize("O2")
// #pragma GCC target("avx,avx2,fma")
// #pragma GCC optimize ("O3,unroll-loops,no-stack-protector")
// #pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

// template
#define PB push_back
#define ALL(i_) i_.begin(), i_.end()
#define LOG2(x_) (31 - __builtin_clz(x_))
#define getBit(x_, i_) ((x_ >> i_) & (ll) 1)
#define rd(l_, r_) (l_ + rng() % (r_ - l_ + 1))
#define FOR(i_, a_, b_)  for(int i_ = (int) (a_); i_ <= (int) (b_); ++i_)
#define FORD(i_, a_, b_) for(int i_ = (int) (a_); i_ >= (int) (b_); --i_)

// debugger 
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef DEBUG
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
 
typedef long long ll;
typedef long double ld;

template<class X, class Y> bool minimize(X &x, const Y &y){
    X eps = 1e-9;
    if (x > y + eps) {
        x = y;
        return 1;
    }
    return 0;
}

template<class X, class Y> bool maximize(X &x, const Y &y) {
    X eps = 1e-9;
    if (x + eps < y) {
        x = y;
        return 1;
    }
    return 0;
}

template<class T> T Abs(const T &x) { return (x < 0 ? -x : x); }
template<class T> using heap_min = priority_queue<T, vector<T>, greater<T>>;
template<class T> using heap_max = priority_queue<T>;

const int mod = (int) 1e9 + 7;

template<class X, class Y> void Add(X &x, const Y &y){
    x += y;
    if(x >= mod) x -= mod;
    if(x < 0) x += mod;
}

const int oo = (int) 1e9 + 99;
const array<int, 2> dxy8[] = { {-1, 0}, {1, 0}, {0, 1}, {0, -1}, {1, -1}, {1, 1}, {-1, 1}, {-1, -1} };
const array<int, 2> dxy4[] = { {-1, 0}, {1, 0}, {0, 1}, {0, -1} };

const int maxn = (int) 1e5 + 11;
const int LOG = (int) LOG2(maxn) + 3;

void File(){
    #define TASK "SUNCANJE"
    if(fopen(TASK".inp", "r")) {
        freopen(TASK".inp", "r", stdin);
        freopen(TASK".out", "w", stdout);
    }
}

struct item{
	int x1, y1, x2, y2;

	item(int x1_ = 0, int y1_ = 0, int x2_ = 0, int y2_ = 0){
		x1 = x1_;
		y1 = y1_;
		x2 = x2_;
		y2 = y2_;
	}
} rect[maxn];

int n, m;

void ReadInput(){
	cin >> n;
	FOR(i, 1, n) {
		int x, y, a, b; cin >> x >> y >> a >> b;
		rect[i] = item(x, y, x + a - 1, y + b - 1);
	}  
}

struct SegmentTree{
	vector<set<array<int, 2>>> seg[2];

	void Init(int n){
		FOR(i, 0, 1){
			seg[i].resize(4 * n + 11, {});
		}
	}

	bool Check(set<array<int, 2>> &se, int l, int r){
		if(se.empty()) return 0;
		auto it = se.lower_bound({l, 0});
		if(it != se.end() && (*it)[0] <= r) return 1;
		if(it != se.begin()){
			--it;
			if((*it)[1] >= l) return 1;
		}
		return 0;
	}

	void Insert(set<array<int, 2>> &se, int l, int r){
		if(se.empty()){
			se.insert({l, r});
			return;
		}
		auto lf = se.upper_bound({l, 0});
		auto rt = se.upper_bound({r, oo});
		if(lf != se.begin()){
			--lf;
			if((*lf)[1] < l) ++lf;
		}
		vector<array<int, 2>> temp;
		while(lf != rt){
			temp.PB(*lf);
			++lf;
		}
		for(auto x : temp){
			se.erase(x);
			minimize(l, x[0]);
			maximize(r, x[1]);
		}
		se.insert({l, r});
	}

	bool Add(int u, int v, int l, int r, int node = 1, int lf = 0, int rt = m){
		if(u > rt || v < lf) return 0;
		if(lf >= u && rt <= v){
			bool res = Check(seg[0][node], l, r) | Check(seg[1][node], l, r);
			Insert(seg[0][node], l, r);
			return res;
		}
		bool res = Check(seg[0][node], l, r);
		Insert(seg[1][node], l, r);
		int mid = (lf + rt) >> 1;
		res |= Add(u, v, l, r, node << 1, lf, mid);
		res |= Add(u, v, l, r, node << 1 | 1, mid + 1, rt);
		return res;
	}
} SEG;

int res[maxn];

void Solve(){   
	vector<int> cpr;
	FOR(i, 1, n) {
		cpr.PB(rect[i].x1);
		cpr.PB(rect[i].x2);
		cpr.PB(rect[i].y1);
		cpr.PB(rect[i].y2);
	}
	sort(ALL(cpr)); cpr.resize(unique(ALL(cpr)) - cpr.begin());
	FOR(i, 1, n){
		rect[i].x1 = lower_bound(ALL(cpr), rect[i].x1) - cpr.begin();
		rect[i].x2 = lower_bound(ALL(cpr), rect[i].x2) - cpr.begin();
		rect[i].y1 = lower_bound(ALL(cpr), rect[i].y1) - cpr.begin();
		rect[i].y2 = lower_bound(ALL(cpr), rect[i].y2) - cpr.begin();
	}
	m = (int) cpr.size() - 1;

	SEG.Init(m);
	FORD(i, n, 1){
		res[i] = SEG.Add(rect[i].x1, rect[i].x2, rect[i].y1, rect[i].y2);
	}
	FOR(i, 1, n) cout << (res[i] ? "NE" : "DA") << "\n";
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    File();
    ReadInput();
    Solve();
    cerr << "\nTime elapsed: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
    return 0;
}

Compilation message (stderr)

suncanje.cpp: In function 'void File()':
suncanje.cpp:94:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |         freopen(TASK".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
suncanje.cpp:95:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   95 |         freopen(TASK".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 13 / 13
• Subtask 2: 13 / 13
• Subtask 3: 13 / 13
• Subtask 4: 13 / 13
• Subtask 5: 13 / 13
• Subtask 6: 13 / 13
• Subtask 7: 13 / 13
• Subtask 8: 13 / 13
• Subtask 9: 13 / 13
• Subtask 10: 13 / 13