oj.uz

답안 #1083747

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1083747 2024-09-04T02:34:17 Z nrg_studio 열대 식물원 (Tropical Garden) (IOI11_garden) C++17
100 / 100
 1287 ms 12036 KB 
#include <bits/stdc++.h>
#include "garden.h"
#include "gardenlib.h"
using namespace std;

#define ll long long
#define pb push_back
#define pii pair<int,int>
#define f first
#define s second
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)

void count_routes(int n, int m, int p, int r[][2], int q, int g[]) {
	ios::sync_with_stdio(false); cin.tie(0);

	vector<pii> mx(n,{-1,-1});

	auto chmax = [&](int x, int v) {
		if (mx[x].f==-1) {mx[x].f=v;}
		else if (mx[x].s==-1) {mx[x].s=v;}
	};

	F0R(i,m) {
		chmax(r[i][0],r[i][1]); chmax(r[i][1],r[i][0]);
	}

	vector<int> dist(2*n,INT_MAX); dist[p] = 0; // to P
	vector<int> dist2(2*n,INT_MAX); dist2[n+p] = 0; // to P+N
	vector<bool> vis(2*n,false), vis2(2*n,false);
	vis[p] = true; vis2[n+p] = true;
	int cyc[2] = {0,0};

	auto find = [&](int cur) {
		int ret;
		if (cur >= n) {ret = (mx[cur-n].s==-1 ? mx[cur-n].f : mx[cur-n].s);}
		else {ret = mx[cur].f;}
		return (ret+n*(mx[ret].f==(cur%n)));
	};

	auto dfs = [&](auto& dfs, int cur, vector<int>& d, vector<bool>& v)->void {
		int nxt = find(cur);
		v[cur] = true;
		if (!v[nxt]) {dfs(dfs,nxt,d,v); d[cur] = d[nxt]+1;}
		else if (d[nxt]!=INT_MAX) {d[cur] = d[nxt]+1;}
		else {d[cur] = INT_MIN;}
	};
	//cout<<find(5);
	//dfs(dfs,1,dist,vis);
	//if (mx[p].f!=-1) {dfs(dfs,p+n,p+n,1,dist,vis);}
	F0R(i,2*n) {if (!vis[i]&&mx[i%n].f!=-1) {dfs(dfs,i,dist,vis);}}
	//if (mx[p].f!=-1) {dfs(dfs,n,n,1,dist2,vis2);}
	//dfs(dfs,5,dist2,vis2);
	F0R(i,2*n) {if (!vis2[i]&&mx[i%n].f!=-1) {dfs(dfs,i,dist2,vis2);}}

	auto cycle = [&](auto& cycle, int cur, int src, int depth)->void {
		int nxt = find(cur); vis[cur] = true;
		if (!vis[nxt]) {cycle(cycle,nxt,src,depth+1);}
		else {if (nxt==src) {cyc[src/n] = depth+1;}}
	};
	if (mx[p].f!=-1) {
		vis.assign(2*n,false); cycle(cycle,p,p,0);
		vis.assign(2*n,false); cycle(cycle,p+n,p+n,0);
	}

	F0R(j,q) {
		int ans = 0; 
		int k = g[j];
		F0R(i,n) {
			ans += (dist[i]==k) + (dist2[i]==k);
			if (dist[i]>=0 && dist[i]!=INT_MAX && cyc[0] && (k-dist[i]>0)) {ans += !((k-dist[i])%cyc[0]);}
			if (dist2[i]>=0 && dist2[i]!=INT_MAX && cyc[1] && (k-dist2[i]>0)) {ans += !((k-dist2[i])%cyc[1]);}
		} answer(ans);
	} 
}

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 416 KB Output is correct
11 Correct 4 ms 3420 KB Output is correct
12 Correct 9 ms 4064 KB Output is correct
13 Correct 18 ms 10072 KB Output is correct
14 Correct 30 ms 7560 KB Output is correct
15 Correct 27 ms 7484 KB Output is correct
16 Correct 24 ms 6492 KB Output is correct
17 Correct 21 ms 6068 KB Output is correct
18 Correct 10 ms 3976 KB Output is correct
19 Correct 28 ms 7380 KB Output is correct
20 Correct 29 ms 7504 KB Output is correct
21 Correct 32 ms 6220 KB Output is correct
22 Correct 25 ms 5980 KB Output is correct
23 Correct 29 ms 8136 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 416 KB Output is correct
11 Correct 4 ms 3420 KB Output is correct
12 Correct 9 ms 4064 KB Output is correct
13 Correct 18 ms 10072 KB Output is correct
14 Correct 30 ms 7560 KB Output is correct
15 Correct 27 ms 7484 KB Output is correct
16 Correct 24 ms 6492 KB Output is correct
17 Correct 21 ms 6068 KB Output is correct
18 Correct 10 ms 3976 KB Output is correct
19 Correct 28 ms 7380 KB Output is correct
20 Correct 29 ms 7504 KB Output is correct
21 Correct 32 ms 6220 KB Output is correct
22 Correct 25 ms 5980 KB Output is correct
23 Correct 29 ms 8136 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 59 ms 3616 KB Output is correct
26 Correct 93 ms 4440 KB Output is correct
27 Correct 684 ms 10076 KB Output is correct
28 Correct 729 ms 7512 KB Output is correct
29 Correct 660 ms 7508 KB Output is correct
30 Correct 383 ms 6488 KB Output is correct
31 Correct 373 ms 5976 KB Output is correct
32 Correct 101 ms 4184 KB Output is correct
33 Correct 765 ms 7600 KB Output is correct
34 Correct 603 ms 7720 KB Output is correct
35 Correct 385 ms 6236 KB Output is correct
36 Correct 773 ms 5948 KB Output is correct
37 Correct 526 ms 8184 KB Output is correct
38 Correct 1287 ms 12036 KB Output is correct