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답안 #1112753

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1112753 2024-11-14T18:53:30 Z PagodePaiva 열대 식물원 (Tropical Garden) (IOI11_garden) C++17
100 / 100
 1567 ms 24568 KB 
#include<bits/stdc++.h>
#include "garden.h"
#include "gardenlib.h"
#define cyc1 cyc
 
using namespace std;
 
const int N = 150010;
vector <array <int, 2>> g[N], gg[N];
int dist[N][2];
int low[N][2];
int nx[N][2];
int back[N][2];
 
void count_routes(int n, int m, int p, int r[][2], int q, int G[]){
    for(int i = 0;i < m;i++){
      gg[r[i][0]].push_back({i, r[i][1]});
      gg[r[i][1]].push_back({i, r[i][0]});
    }
    memset(low, -1, sizeof low);
    memset(nx, -1, sizeof nx);
    for(int i = 0;i < n;i++){
      sort(gg[i].begin(), gg[i].end());
      for(int j = 0;j < min((int)gg[i].size(), 2);j++){
        g[gg[i][j][1]].push_back({gg[i][j][0], i});
        low[i][j] = gg[i][j][0];
        nx[i][j] = gg[i][j][1];
      }
    }
    for(int i = 0;i < N;i++){
      dist[i][0] = dist[i][1] = 1e9+20;
    }
    dist[p][0] = dist[p][1] = 0;
    priority_queue <array <int, 3>> pq;
    pq.push({0, p, 0});
    pq.push({0, p, 1});
    while(!pq.empty()){
      auto [d, v, flag] = pq.top();
      pq.pop();
      d *= -1;
      if(d != dist[v][flag]) continue;
      for(auto [w, x] : g[v]){
        if(w == low[x][0]){
          int fg;
          if(w == low[v][0]) fg = 1;
          else fg = 0;
          if(fg != flag) continue;
          if(dist[v][flag]+1 < dist[x][0]){
            dist[x][0] = dist[v][flag]+1;
            if(v == p){
              if(w == low[v][0]) back[x][0] = 1;
              else back[x][0] = 0;
            }
            else{
              back[x][0] = back[v][flag];
            }
            pq.push({-dist[x][0], x, 0});
            if(low[x][1] == -1){
              if(dist[v][flag]+1 < dist[x][1]){
              dist[x][1] = dist[v][flag]+1;
              if(v == p){
                if(w == low[v][0]) back[x][1] = 1;
                else back[x][1] = 0;
              }
              else{
                back[x][1] = back[v][flag];
              }
              pq.push({-dist[x][1], x, 1});
              }
            }
          }
        }
        else if(w == low[x][1]){
          int fg;
          if(w == low[v][0]) fg = 1;
          else fg = 0;
          if(fg != flag) continue;
          if(dist[v][flag]+1 < dist[x][1]){
            dist[x][1] = dist[v][flag]+1;
            if(v == p){
              if(w == low[v][0]) back[x][1] = 1;
              else back[x][1] = 0;
            }
            else{
              back[x][1] = back[v][flag];
            }
            pq.push({-dist[x][1], x, 1});
          }
        }
      }
    }
    for(int i = 0;i < q;i++){
      int k = G[i];
      int res = 0;
      for(int v = 0;v < n;v++){
        //cout << res << ' ';
        if(dist[v][0] == k) {
          res++;
          continue;
        }
        if(k < dist[v][0]) continue;
        int t = dist[v][0], b = back[v][0];
        if(b == 1){
            if(nx[p][1] == -1){
                b = 0;
            }
        }
        int cyc=0;
        if(b == 0){
          int x = nx[p][0];
          cyc++;
          if(low[p][0] == low[x][0]) cyc += dist[x][1];
          else cyc += dist[x][0];
          int bb = back[x][(low[p][0] == low[x][0] ? 1 : 0)];
          if(bb == 1){
            if(nx[p][1] == -1) bb = 0;
          }
          if(bb == 0){
            if(k % cyc == (dist[v][0]) % cyc){
              res++;
              continue;
            }
            else continue;
          }
          else{
            int cyc2 = 0;
            int xx = nx[p][1];
            cyc2++;
            if(low[p][1] == low[xx][0]) cyc2 += dist[xx][1];
            else cyc2 += dist[xx][0];
            int bbb = back[xx][(low[p][1] == low[xx][0] ? 1 : 0)];
            if(bbb == 1){
              if(k%cyc2 == (dist[v][0] + cyc1)%cyc2){
                res++;
                continue;
              }
            }
            else{
              if(k%(cyc1+cyc2) == (dist[v][0])%(cyc1+cyc2) or k%(cyc1+cyc2) == (dist[v][0]+cyc1)%(cyc1+cyc2)){
                res++;
                continue;
              }
            }
          }
        }
        else{
          int x = nx[p][1];
          cyc++;
          if(low[p][1] == low[x][0]) cyc += dist[x][1];
          else cyc += dist[x][0];
          int bb = back[x][(low[p][1] == low[x][0] ? 1 : 0)];
          if(bb == 1){
            if(k % cyc == (dist[v][0]) % cyc){
              res++;
              continue;
            }
            else continue;
          }
          else{
            int cyc2 = 0;
            int xx = nx[p][0];
            cyc2++;
            if(low[p][0] == low[xx][0]) cyc2 += dist[xx][1];
            else cyc2 += dist[xx][0];
            int bbb = back[xx][(low[p][0] == low[xx][0] ? 1 : 0)];
            if(bbb == 0){
              if(k%cyc2 == (dist[v][0] + cyc1)%cyc2){
                res++;
                continue;
              }
            }
            else{
              if(k%(cyc1+cyc2) == (dist[v][0])%(cyc1+cyc2) or k%(cyc1+cyc2) == (dist[v][0]+cyc1)%(cyc1+cyc2)){
                res++;
                continue;
              }
            }
          }
        }
      }
      answer(res);
    }
}

Compilation message

garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:102:13: warning: unused variable 't' [-Wunused-variable]
  102 |         int t = dist[v][0], b = back[v][0];
      |             ^

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 11088 KB Output is correct
2 Correct 8 ms 11088 KB Output is correct
3 Correct 8 ms 11088 KB Output is correct
4 Correct 8 ms 10844 KB Output is correct
5 Correct 9 ms 10832 KB Output is correct
6 Correct 10 ms 11088 KB Output is correct
7 Correct 9 ms 10832 KB Output is correct
8 Correct 9 ms 11088 KB Output is correct
9 Correct 11 ms 11344 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 11088 KB Output is correct
2 Correct 8 ms 11088 KB Output is correct
3 Correct 8 ms 11088 KB Output is correct
4 Correct 8 ms 10844 KB Output is correct
5 Correct 9 ms 10832 KB Output is correct
6 Correct 10 ms 11088 KB Output is correct
7 Correct 9 ms 10832 KB Output is correct
8 Correct 9 ms 11088 KB Output is correct
9 Correct 11 ms 11344 KB Output is correct
10 Correct 10 ms 10832 KB Output is correct
11 Correct 15 ms 12736 KB Output is correct
12 Correct 27 ms 14416 KB Output is correct
13 Correct 35 ms 18340 KB Output is correct
14 Correct 74 ms 23112 KB Output is correct
15 Correct 144 ms 23680 KB Output is correct
16 Correct 82 ms 19800 KB Output is correct
17 Correct 85 ms 19528 KB Output is correct
18 Correct 32 ms 14928 KB Output is correct
19 Correct 83 ms 23112 KB Output is correct
20 Correct 139 ms 23644 KB Output is correct
21 Correct 95 ms 19812 KB Output is correct
22 Correct 81 ms 19272 KB Output is correct
23 Correct 75 ms 23880 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 11088 KB Output is correct
2 Correct 8 ms 11088 KB Output is correct
3 Correct 8 ms 11088 KB Output is correct
4 Correct 8 ms 10844 KB Output is correct
5 Correct 9 ms 10832 KB Output is correct
6 Correct 10 ms 11088 KB Output is correct
7 Correct 9 ms 10832 KB Output is correct
8 Correct 9 ms 11088 KB Output is correct
9 Correct 11 ms 11344 KB Output is correct
10 Correct 10 ms 10832 KB Output is correct
11 Correct 15 ms 12736 KB Output is correct
12 Correct 27 ms 14416 KB Output is correct
13 Correct 35 ms 18340 KB Output is correct
14 Correct 74 ms 23112 KB Output is correct
15 Correct 144 ms 23680 KB Output is correct
16 Correct 82 ms 19800 KB Output is correct
17 Correct 85 ms 19528 KB Output is correct
18 Correct 32 ms 14928 KB Output is correct
19 Correct 83 ms 23112 KB Output is correct
20 Correct 139 ms 23644 KB Output is correct
21 Correct 95 ms 19812 KB Output is correct
22 Correct 81 ms 19272 KB Output is correct
23 Correct 75 ms 23880 KB Output is correct
24 Correct 8 ms 10832 KB Output is correct
25 Correct 77 ms 13020 KB Output is correct
26 Correct 120 ms 15056 KB Output is correct
27 Correct 1092 ms 18524 KB Output is correct
28 Correct 850 ms 23408 KB Output is correct
29 Correct 1271 ms 24568 KB Output is correct
30 Correct 844 ms 21000 KB Output is correct
31 Correct 740 ms 20752 KB Output is correct
32 Correct 141 ms 14928 KB Output is correct
33 Correct 837 ms 22088 KB Output is correct
34 Correct 1304 ms 23820 KB Output is correct
35 Correct 848 ms 20928 KB Output is correct
36 Correct 1118 ms 20468 KB Output is correct
37 Correct 654 ms 23112 KB Output is correct
38 Correct 1567 ms 22764 KB Output is correct