oj.uz

답안 #1084933

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1084933 2024-09-07T08:43:32 Z coolsentenceidontremember Park (BOI16_park) C++17
0 / 100
 261 ms 33464 KB 
/*


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*/


#include"bits/stdc++.h"
#pragma GCC optimize("O3", "unroll-loops")
#define ll long long
#define ld long double
#define ff first
#define ss second
#define db double
#define time_begin() auto begin = chrono::high_resolution_clock::now()
#define time_end() auto end = chrono::high_resolution_clock::now(); auto elapsed = chrono::duration_cast<chrono::nanoseconds>(end-begin); auto sec = elapsed.count() * 1e-9; cerr << "\n\nExecution time: " << sec << " seconds";
#define check_time() cerr << "\nStatus : "; if (sec>1) cerr << "Time Limit Exceeded 1!!!1!111"; else cerr << "You good brother"
#define precision(x) fixed << setprecision((x))
#define check_ok(s) cout << s << " is aight" << '\n'
#define pii pair<int, int>
#define mp make_pair
using namespace std;

void setIO(string s = ""){
 ios_base::sync_with_stdio(false);
 cin.tie(nullptr);
 cout.tie(nullptr);
 if (!s.empty()){
	freopen((s+".in").c_str(), "r", stdin);
	freopen((s+".out").c_str(), "w", stdout);
	}
}

struct Tree {
	int x, y, r;
};

struct Edge {
 int u, v;
 ll w;
 Edge(int uu, int vv, ll ww) : u(uu), v(vv), w(ww){
 	
 }	
 bool operator < (const Edge &other){
 	return w < other.w;
 }
};



ll dist(ll x1, ll y1, ll x2, ll y2, ll r1, ll r2){
	return (ll)(sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2)) - r1 - r2);
}

int pre[4] = {3, 0, 1, 2};

vector<Edge> edge;

struct DSU{
	vector<int> e;
	DSU(int n): e(n, -1){
		
	}
	int find(int x){
		return (e[x] < 0 ? x : e[x]= find(e[x]));
	}
	bool unite(int x, int y){
		x = find(x);
		y = find(y);
		if (x == y) return 0;
		if (e[x] > e[y]) swap(x, y);
		e[x] += e[y];
		e[y] = x;
		return 1;
	}
};

int main(){
	setIO();
    int n, m;
    cin >> n >> m;
    int w, h;
    cin >> w >> h;
    vector<Tree> tree(n);
    for (int i = 0; i < n;i++){
    	cin >> tree[i].x >> tree[i].y >> tree[i].r;
    	edge.push_back(Edge(0, i+4, dist(tree[i].x, 0, tree[i].x, tree[i].y, tree[i].r, 0)));
    	edge.push_back(Edge(1, i+4, dist(w, tree[i].y, tree[i].x, tree[i].y, tree[i].r, 0)));
    	edge.push_back(Edge(2, i+4, dist(tree[i].x, h, tree[i].x, tree[i].y, tree[i].r, 0)));
    	edge.push_back(Edge(3, i+4, dist(0, tree[i].y, tree[i].x, tree[i].y, tree[i].r, 0)));
    	for (int j = 0; j < i; j++){
    		edge.push_back(Edge(j+4, i+4, dist(tree[j].x, tree[j].y, tree[i].x, tree[i].y, tree[j].r, tree[i].r)));
		}
	}
	sort(edge.begin(), edge.end());
	vector<pair<ll, pii>> guest;
	for (int i = 0; i < m; i++){
		ll r;
		int e;
		cin >> r >> e;
		guest.push_back(mp(r*2, mp(--e, i)));
	}
	sort(guest.begin(), guest.end());
	vector<vector<bool>> ok(m, vector<bool>(4, true));
	int p = 0;
	DSU dsu(n+4);
	for (const Edge &e : edge){
		while (p < m && guest[p].ff <= e.w){
			int cur_entr = guest[p].ss.ff;
			int idx = guest[p].ss.ss;
			bool conn[4][4];
			for (int i = 0; i < 4; i++){
				conn[i][i] = true;
				for (int j = i+1; j < 4; j++){
					conn[i][j] = (dsu.find(i) == dsu.find(j));
					conn[j][i] = conn[i][j];
				}
			}
			if (cur_entr == 0){
				if (conn[0][1]) ok[idx][1] = false;
				if (conn[0][2]) ok[idx][1] = ok[idx][2] = false;
				if (conn[0][3]) ok[idx][1] = ok[idx][2] = ok[idx][3] = false;
				if (conn[1][2]) ok[idx][2] = false;
				if (conn[1][3]) ok[idx][2] = ok[idx][3] = false;
				if (conn[2][3]) ok[idx][3] = false;
			} else if (cur_entr = 1){
				if (conn[0][1]) ok[idx][0] = ok[idx][2] = ok[idx][3] = false;
				if (conn[0][2]) ok[idx][0] = ok[idx][3] = false;
				if (conn[0][3]) ok[idx][0] = false;
				if (conn[1][2]) ok[idx][2] = false;
				if (conn[1][3]) ok[idx][2] = ok[idx][3] = false;
				if (conn[2][3]) ok[idx][3] = false;
			} else if (cur_entr = 2){
				if (conn[0][1]) ok[idx][1] = false;
				if (conn[0][2]) ok[idx][3] = ok[idx][0] = false;
				if (conn[0][3]) ok[idx][0] = 0;
				if (conn[1][2]) ok[idx][3] = ok[idx][0] = ok[idx][1] = 0;
				if (conn[1][3]) ok[idx][0] = ok[idx][1] = 0;
				if (conn[2][3]) ok[idx][3] = 0;
			} else {
				assert(cur_entr == 3);
				if (conn[0][1]) ok[idx][1] = 0;
				if (conn[0][2]) ok[idx][1] = ok[idx][2] = 0;
				if (conn[0][3]) ok[idx][0] = 0;
				if (conn[1][2]) ok[idx][2] = 0;
				if (conn[1][3]) ok[idx][0] = ok[idx][1] = 0;
				if (conn[2][3]) ok[idx][0] = ok[idx][1] = ok[idx][2] = 0;
			}
			p++;
		}
		dsu.unite(e.u, e.v);
	}
	for (int i = 0; i < m; i++){
		for (int j = 0; j < 4; j++) if (ok[i][j]) cout << j+1;
		cout << '\n';
	}
    
}

Compilation message

park.cpp: In function 'int main()':
park.cpp:240:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  240 |    } else if (cur_entr = 1){
      |               ~~~~~~~~~^~~
park.cpp:247:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  247 |    } else if (cur_entr = 2){
      |               ~~~~~~~~~^~~
park.cpp: In function 'void setIO(std::string)':
park.cpp:143:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  143 |  freopen((s+".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
park.cpp:144:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  144 |  freopen((s+".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 261 ms 33464 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 42 ms 10820 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 42.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 261 ms 33464 KB Output isn't correct
2 Halted 0 ms 0 KB -