oj.uz

Submission #728000

# Submission time Handle Problem Language Result Execution time Memory
728000 2023-04-21T18:48:55 Z WonderfulWhale Park (BOI16_park) C++17
100 / 100
 2366 ms 58456 KB 
#include<bits/stdc++.h>
using namespace std;

#define int int64_t
#define pb push_back
#define st first
#define nd second
#define pii pair<int, int>
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

struct drzewo {
	int x, y, r;
	drzewo() {}
	drzewo(int x, int y, int r):x(x), y(y), r(r) {}
};

int n, m, W, H;
int ans[4][4];

drzewo t[2009];
int Min[2009][2009];

vector<int> G[2009];
int num[2009];
int cur;

void dfs(int x, int z) {
	num[x] = z;
	for(int y:G[x]) if(num[y]==0) dfs(y, z);
}

int32_t main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	cin >> n >> m >> W >> H;
	for(int i=0;i<n;i++) {
		int a, b, c;
		cin >> a >> b >> c;
		t[i] = drzewo(a, b, c);
	}
	for(int i=0;i<n;i++) {
		for(int j=i+1;j<n;j++) {
			int dis = (t[i].x-t[j].x)*(t[i].x-t[j].x)+(t[i].y-t[j].y)*(t[i].y-t[j].y);
			int s = -1;
			int e = 1e9/2;
			while(e-s>1) {
				int m = (e+s)/2;
				if((t[i].r+t[j].r+2*m)*(t[i].r+t[j].r+2*m)>dis) e = m;
				else s = m;
			}
			Min[i][j] = e;
			//cout << i << " " << j << " " << e << " lacz\n";
		}
	}
	//cout << "min end\n";
	for(int a=0;a<4;a++) {
		for(int b=a+1;b<4;b++) {
			//cout << "teraz: " << a << " " << b << "\n";
			int s = -1;
			int e = 1e9;
			while(e-s>1) {
				int m = (e+s)/2;
				//cout << "promien: " << m << "\n";
				for(int i=0;i<=n+4;i++) {
					G[i].clear();
				}
				for(int i=0;i<n;i++) {
					for(int j=i+1;j<n;j++) {
						if(Min[i][j] <= m) {
							//cout << "laczymy: " << i << " " << j << "\n";
							G[i].pb(j);
							G[j].pb(i);
						}
					}
				}
				for(int i=0;i<n;i++) {
					if(t[i].y-t[i].r-m < m) {
						//cout << i << " dol\n";
						G[n+1].pb(i);
						G[i].pb(n+1);
					}
					if(t[i].x-t[i].r-m < m) {
						//cout << i << " lewo\n";
						G[n].pb(i);
						G[i].pb(n);
					}
					if(t[i].x+t[i].r+m > W-m) {
						//cout << i << " prawo\n";
						G[n+2].pb(i);
						G[i].pb(n+2);
					}
					if(t[i].y+t[i].r+m > H-m) {
						//cout << i << " gora\n";
						G[n+3].pb(i);
						G[i].pb(n+3);
					}
				}
				memset(num, 0, sizeof(num));
				cur = 0;
				for(int i=0;i<n+4;i++) if(num[i]==0) dfs(i, ++cur);
				bool res = true;
				if(a%2 == b%2) {
					if(num[n+0] == num[n+2]) res = false;
					if(num[n+1] == num[n+3]) res = false;
				}
				if((a==0 and b==1) or (a==2 and b == 3)) {
					if(num[n+1]==num[n+3]) res = false;
				}
				if((a==0 and b==3) or (a==1 and b == 2)) {
					if(num[n]==num[n+2]) res = false;
				}
				if(num[n+a] == num[n+(a+1)%4]) res = false;
				if(num[n+b] == num[n+(b+1)%4]) res = false;
				if(res) s = m;
				else e = m;
			}
			//cout << a << " " << b << " " << s << "\n";
			ans[a][b] = s;
			ans[b][a] = s;
		}
	}
	for(int i=0;i<4;i++) {
		ans[i][i] = 2e9;
	}
	for(int i=0;i<m;i++) {
		int r, e;
		cin >> r >> e;
		e--;
		for(int j=0;j<4;j++) {
			if(ans[e][j] >= r) {
				cout << j+1;
			}
		}
		cout << "\n";
	}
}

Subtask #1
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1611 ms 57084 KB Output is correct
2 Correct 1585 ms 57136 KB Output is correct
3 Correct 1562 ms 56920 KB Output is correct
4 Correct 1578 ms 57172 KB Output is correct
5 Correct 1554 ms 57040 KB Output is correct
6 Correct 1573 ms 57112 KB Output is correct
7 Correct 2330 ms 55660 KB Output is correct
8 Correct 2343 ms 55712 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 3156 KB Output is correct
2 Correct 48 ms 3132 KB Output is correct
3 Correct 53 ms 3020 KB Output is correct
4 Correct 47 ms 3200 KB Output is correct
5 Correct 46 ms 3148 KB Output is correct
6 Correct 53 ms 3180 KB Output is correct
7 Correct 28 ms 1800 KB Output is correct
8 Correct 29 ms 1800 KB Output is correct

Subtask #3
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 1611 ms 57084 KB Output is correct
2 Correct 1585 ms 57136 KB Output is correct
3 Correct 1562 ms 56920 KB Output is correct
4 Correct 1578 ms 57172 KB Output is correct
5 Correct 1554 ms 57040 KB Output is correct
6 Correct 1573 ms 57112 KB Output is correct
7 Correct 2330 ms 55660 KB Output is correct
8 Correct 2343 ms 55712 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 48 ms 3156 KB Output is correct
12 Correct 48 ms 3132 KB Output is correct
13 Correct 53 ms 3020 KB Output is correct
14 Correct 47 ms 3200 KB Output is correct
15 Correct 46 ms 3148 KB Output is correct
16 Correct 53 ms 3180 KB Output is correct
17 Correct 28 ms 1800 KB Output is correct
18 Correct 29 ms 1800 KB Output is correct
19 Correct 1620 ms 58456 KB Output is correct
20 Correct 1620 ms 56912 KB Output is correct
21 Correct 1609 ms 58284 KB Output is correct
22 Correct 1656 ms 56840 KB Output is correct
23 Correct 1626 ms 58248 KB Output is correct
24 Correct 2366 ms 56964 KB Output is correct