oj.uz

Submission #169059

# Submission time Handle Problem Language Result Execution time Memory
169059 2019-12-18T07:04:58 Z AlexLuchianov Tropical Garden (IOI11_garden) C++14
100 / 100
 2496 ms 33268 KB 
#include "garden.h"
#include "gardenlib.h"
#include <vector>
#include <queue>
#include <iostream>

using namespace std;

using ll = long long;

#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

int const nmax = 300000;
int const inf = 1000000000;

int f[1 + nmax], scount[1 + nmax];
int dist[1 + nmax], dist2[1 + nmax];
vector<int> graph[1 + nmax];
vector<int> invg[1 + nmax];

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
  for(int i = 0; i < 2 * N; i++)
    f[i] = -1;

  for(int i = 0; i < M; i++){
    int x = R[i][0], y = R[i][1];
    graph[x].push_back(i);
    graph[y].push_back(i);
  }


  for(int i = 0;i < N; i++){
    int e = graph[i][0];
    int to = R[e][0] + R[e][1] - i;
    if(graph[to][0] == e)
      f[2 * i] = 2 * to + 1;
    else
      f[2 * i] = 2 * to;
    if(2 <= graph[i].size()){
      int e = graph[i][1];
      int to = R[e][0] + R[e][1] - i;
      if(graph[to][0] == e)
        f[2 * i + 1] = 2 * to + 1;
      else
        f[2 * i + 1] = 2 * to;
    } else
      f[2 * i + 1] = f[2 * i];
  }

  for(int i = 0; i < 2 * N; i++)
    invg[f[i]].push_back(i);


  for(int i = 0; i < 2 * N; i++)
    dist[i] = dist2[i] = inf;
  queue<int> q;

  q.push(2 * P);
  dist[2 * P] = 0;
  while(0 < q.size()){
    int node = q.front();
    q.pop();
    for(int h = 0; h < invg[node].size(); h++){
      int to = invg[node][h];
      if(dist[to] == inf){
        dist[to] = dist[node] + 1;
        q.push(to);
      }
    }
  }

  dist[2 * P] = dist[f[2 * P]] + 1;

  q.push(2 * P + 1);
  dist2[2 * P + 1] = 0;
  while(0 < q.size()){
    int node = q.front();
    q.pop();
    for(int h = 0; h < invg[node].size(); h++){
      int to = invg[node][h];
      if(dist2[to] == inf){
        dist2[to] = dist2[node] + 1;
        q.push(to);
      }
    }
  }
  dist2[2 * P + 1] = dist2[f[2 * P + 1]] + 1;

  for(int i = 0; i < Q; i++){
    int k = G[i];
    int result = 0;
    for(int j = 0; j < N; j++){
      if(dist[j * 2] <= k && (k - dist[j * 2]) % dist[2 * P] == 0)
        result++;
      if(dist2[j * 2] <= k && (k - dist2[j * 2]) % dist2[2 * P + 1] == 0)
        result++;
    }
    answer(result);
  }
}

Compilation message

garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:65:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int h = 0; h < invg[node].size(); h++){
                    ~~^~~~~~~~~~~~~~~~~~~
garden.cpp:81:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int h = 0; h < invg[node].size(); h++){
                    ~~^~~~~~~~~~~~~~~~~~~

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 14500 KB Output is correct
2 Correct 14 ms 14584 KB Output is correct
3 Correct 15 ms 14556 KB Output is correct
4 Correct 15 ms 14444 KB Output is correct
5 Correct 14 ms 14456 KB Output is correct
6 Correct 15 ms 14584 KB Output is correct
7 Correct 14 ms 14436 KB Output is correct
8 Correct 15 ms 14560 KB Output is correct
9 Correct 17 ms 14684 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 14500 KB Output is correct
2 Correct 14 ms 14584 KB Output is correct
3 Correct 15 ms 14556 KB Output is correct
4 Correct 15 ms 14444 KB Output is correct
5 Correct 14 ms 14456 KB Output is correct
6 Correct 15 ms 14584 KB Output is correct
7 Correct 14 ms 14436 KB Output is correct
8 Correct 15 ms 14560 KB Output is correct
9 Correct 17 ms 14684 KB Output is correct
10 Correct 14 ms 14456 KB Output is correct
11 Correct 29 ms 16748 KB Output is correct
12 Correct 46 ms 18388 KB Output is correct
13 Correct 61 ms 25088 KB Output is correct
14 Correct 150 ms 27736 KB Output is correct
15 Correct 176 ms 28020 KB Output is correct
16 Correct 136 ms 24172 KB Output is correct
17 Correct 196 ms 23076 KB Output is correct
18 Correct 61 ms 18396 KB Output is correct
19 Correct 247 ms 27604 KB Output is correct
20 Correct 210 ms 28028 KB Output is correct
21 Correct 137 ms 24192 KB Output is correct
22 Correct 134 ms 23048 KB Output is correct
23 Correct 150 ms 28992 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 14500 KB Output is correct
2 Correct 14 ms 14584 KB Output is correct
3 Correct 15 ms 14556 KB Output is correct
4 Correct 15 ms 14444 KB Output is correct
5 Correct 14 ms 14456 KB Output is correct
6 Correct 15 ms 14584 KB Output is correct
7 Correct 14 ms 14436 KB Output is correct
8 Correct 15 ms 14560 KB Output is correct
9 Correct 17 ms 14684 KB Output is correct
10 Correct 14 ms 14456 KB Output is correct
11 Correct 29 ms 16748 KB Output is correct
12 Correct 46 ms 18388 KB Output is correct
13 Correct 61 ms 25088 KB Output is correct
14 Correct 150 ms 27736 KB Output is correct
15 Correct 176 ms 28020 KB Output is correct
16 Correct 136 ms 24172 KB Output is correct
17 Correct 196 ms 23076 KB Output is correct
18 Correct 61 ms 18396 KB Output is correct
19 Correct 247 ms 27604 KB Output is correct
20 Correct 210 ms 28028 KB Output is correct
21 Correct 137 ms 24192 KB Output is correct
22 Correct 134 ms 23048 KB Output is correct
23 Correct 150 ms 28992 KB Output is correct
24 Correct 15 ms 14508 KB Output is correct
25 Correct 129 ms 16868 KB Output is correct
26 Correct 183 ms 18428 KB Output is correct
27 Correct 1343 ms 25168 KB Output is correct
28 Correct 1274 ms 27744 KB Output is correct
29 Correct 1528 ms 28036 KB Output is correct
30 Correct 1010 ms 24224 KB Output is correct
31 Correct 939 ms 23096 KB Output is correct
32 Correct 203 ms 18428 KB Output is correct
33 Correct 1265 ms 27736 KB Output is correct
34 Correct 1457 ms 28012 KB Output is correct
35 Correct 1016 ms 24200 KB Output is correct
36 Correct 1559 ms 23084 KB Output is correct
37 Correct 1018 ms 29012 KB Output is correct
38 Correct 2496 ms 33268 KB Output is correct