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답안 #787551

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
787551 2023-07-19T09:33:35 Z Ronin13 열대 식물원 (Tropical Garden) (IOI11_garden) C++17
100 / 100
 70 ms 37944 KB 
#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
#define ll long long 
#define ull unsigned ll
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
using namespace std;

const int nmax = 400001;
vector <vector <int> > g(nmax);
int nx[nmax];
int p[nmax];

vector <vector <int> > vv[2];

void bfs(int s, int ind, int n){
    int cnt = 0;
   
    queue <int> q;
    q.push(s);
    vector <bool> used(2 * n + 1);
    used[s] = true;
    fill(p, p + 2 * n, -1);
    p[s] = -1;
    int cyc = s;
    bool rrr = false;
    while(!q.empty()){
        int v = q.front(); q.pop();
        for(int to : g[v]){
          if(used[to]){
            cyc = v;rrr = true;
            break;
          }
          else p[to] = v, q.push(to), used[to] = true;
        }
        if(rrr) break;
    }
    
    while(cyc != -1){
      cnt++;
      cyc = p[cyc];
    }
    vv[ind].resize(cnt);
    while(!q.empty())q.pop();
    used.assign(2 * n + 1, false);
    vector <int> depth(2 * n + 1, -1);
    depth[s] = 0;
    q.push(s);
    while(!q.empty()){
      int v = q.front(); q.pop();
      for(int to : g[v]){
        if(depth[to] == -1) depth[to] = depth[v] + 1, q.push(to);
      }
    }
    //cout << cnt;
    for(int i = n; i < 2 * n; i++){
       // cout << depth[i] << ' ';
        if(depth[i] == -1) continue;
        vv[ind][depth[i] % cnt].pb(depth[i]);
    }
    for(int i = 0; i < cnt; i++)
      sort(vv[ind][i].begin(), vv[ind][i].end());
}

void count_routes(int n, int m, int p, int r[][2], int q, int qv[]){
    int f[n];
   // cout << 1;
    fill(f, f + n, -1);
    fill(nx, nx + 2 * n, -1);
    for(int i = 0; i < m; i++){
        int u = r[i][0], v = r[i][1];
        //cout << u << ' ' << v;
        if(f[u] == -1 && f[v] == -1){
            nx[u + n] = v;
            nx[v + n] = u;
        }
        if(f[u] == -1 && f[v] == 1){
            nx[u + n] = v + n;
            if(nx[v] == -1) nx[v] = u;
        }
        if(f[v] == -1 && f[u] == 1){
            nx[v + n] = u + n;
            if(nx[u] == -1) nx[u] = v; 
        }
        if(f[v] == 1 && f[u] == 1){
            if(nx[u] == -1) nx[u] = v + n;
            if(nx[v] == -1) nx[v] = u + n;
        }
        f[u] = f[v] = 1;
    }
   // cout << 1;
    for(int i = 0; i < 2 * n; i++){
      if(nx[i] == -1 && i < n){
          nx[i] = nx[i + n];
      }
     // cout << nx[i] << ' ';
      if(nx[i] != -1)   g[nx[i]].pb(i);
    }

  bfs(p, 0, n);
    bfs(p + n, 1, n);
    for(int i = 0; i < q; i++){
      int k = qv[i];
      int l = vv[0].size();
      int o = k % l;
      int ans = 0;
      ans += upper_bound(vv[0][o].begin(), vv[0][o].end(), k) - vv[0][o].begin();
      if(l == 1) ans -= lower_bound(vv[0][o].begin(), vv[0][o].end(), k) - vv[0][o].begin();
      l = vv[1].size();
      o = k % l;
      ans += upper_bound(vv[1][o].begin(), vv[1][o].end(), k) - vv[1][o].begin();
     if(l == 1) ans -= lower_bound(vv[1][o].begin(), vv[1][o].end(), k) - vv[1][o].begin();
      answer(ans);
    }
}

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9812 KB Output is correct
2 Correct 5 ms 9812 KB Output is correct
3 Correct 5 ms 9808 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 5 ms 9812 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9812 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9812 KB Output is correct
2 Correct 5 ms 9812 KB Output is correct
3 Correct 5 ms 9808 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 5 ms 9812 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9812 KB Output is correct
10 Correct 5 ms 9724 KB Output is correct
11 Correct 11 ms 11552 KB Output is correct
12 Correct 17 ms 12500 KB Output is correct
13 Correct 44 ms 31320 KB Output is correct
14 Correct 47 ms 19172 KB Output is correct
15 Correct 64 ms 21828 KB Output is correct
16 Correct 63 ms 18956 KB Output is correct
17 Correct 54 ms 17800 KB Output is correct
18 Correct 17 ms 13100 KB Output is correct
19 Correct 48 ms 20912 KB Output is correct
20 Correct 70 ms 21800 KB Output is correct
21 Correct 63 ms 18764 KB Output is correct
22 Correct 47 ms 17692 KB Output is correct
23 Correct 57 ms 21944 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9812 KB Output is correct
2 Correct 5 ms 9812 KB Output is correct
3 Correct 5 ms 9808 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 5 ms 9812 KB Output is correct
7 Correct 4 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9812 KB Output is correct
10 Correct 5 ms 9724 KB Output is correct
11 Correct 11 ms 11552 KB Output is correct
12 Correct 17 ms 12500 KB Output is correct
13 Correct 44 ms 31320 KB Output is correct
14 Correct 47 ms 19172 KB Output is correct
15 Correct 64 ms 21828 KB Output is correct
16 Correct 63 ms 18956 KB Output is correct
17 Correct 54 ms 17800 KB Output is correct
18 Correct 17 ms 13100 KB Output is correct
19 Correct 48 ms 20912 KB Output is correct
20 Correct 70 ms 21800 KB Output is correct
21 Correct 63 ms 18764 KB Output is correct
22 Correct 47 ms 17692 KB Output is correct
23 Correct 57 ms 21944 KB Output is correct
24 Correct 5 ms 9684 KB Output is correct
25 Correct 11 ms 11780 KB Output is correct
26 Correct 18 ms 13100 KB Output is correct
27 Correct 43 ms 32416 KB Output is correct
28 Correct 49 ms 20976 KB Output is correct
29 Correct 61 ms 21864 KB Output is correct
30 Correct 47 ms 18972 KB Output is correct
31 Correct 51 ms 17780 KB Output is correct
32 Correct 19 ms 13096 KB Output is correct
33 Correct 51 ms 20956 KB Output is correct
34 Correct 63 ms 21824 KB Output is correct
35 Correct 45 ms 18856 KB Output is correct
36 Correct 46 ms 17916 KB Output is correct
37 Correct 51 ms 21972 KB Output is correct
38 Correct 60 ms 37944 KB Output is correct