oj.uz

Submission #116577

# Submission time Handle Problem Language Result Execution time Memory
116577 2019-06-13T02:15:05 Z dragonslayerit Tropical Garden (IOI11_garden) C++14
49 / 100
 195 ms 68820 KB 
#include "garden.h"
#include "gardenlib.h"
#include <vector>
#include <queue>
#include <cstdio>
#include <algorithm>

const int INF=1e9+7;

static std::vector<int> adj[150005];
static int to[300005];
static std::vector<int> from[300005];

static int dist[2][300005];

static std::vector<int> at[2][300005];

static void bfs(int start,int* dist){
  std::queue<int> q;
  q.push(start);
  while(!q.empty()){
    int node=q.front();
    q.pop();
    for(int child:from[node]){
      if(!dist[child]){
	dist[child]=dist[node]+1;
	q.push(child);
      }
    }
  }
}

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
  for(int i=0;i<M;i++){
    adj[R[i][0]].push_back(R[i][1]);
    adj[R[i][1]].push_back(R[i][0]);
  }
  for(int i=0;i<N;i++){
    to[i<<1]=(adj[i][0]<<1)|(i==adj[adj[i][0]][0]);
    if(adj[i].size()>1){
      to[i<<1|1]=(adj[i][1]<<1)|(i==adj[adj[i][1]][0]);
    }else{
      to[i<<1|1]=to[i<<1];
    }
  }
  for(int i=0;i<N*2;i++){
    from[to[i]].push_back(i);
  }
  bfs(P<<1,dist[0]);
  bfs(P<<1|1,dist[1]);
  int cycle[2];
  cycle[0]=dist[0][P<<1]?dist[0][P<<1]:INF;
  cycle[1]=dist[1][P<<1|1]?dist[1][P<<1|1]:INF;
  for(int d=0;d<2;d++){
    for(int i=0;i<N*2;i+=2){
      if(dist[d][i]){
	at[d][dist[d][i]%cycle[d]].push_back(dist[d][i]);
      }
    }
  }
  for(int d=0;d<2;d++){
    for(int i=0;i<N*2;i++){
      std::sort(at[d][i].begin(),at[d][i].end());
    }
  }
  for(int q=0; q<Q; q++){
    int K=G[q];
    int ans=0;
    /*
    for(int i=0;i<N*2;i+=2){
      if(dist[0][i]) ans+=(K>=dist[0][i]&&(K-dist[0][i])%cycle[0]==0);
      if(dist[1][i]) ans+=(K>=dist[1][i]&&(K-dist[1][i])%cycle[1]==0);
    }
    */
    for(int d=0;d<2;d++){
      int rem=K%cycle[d];
      ans+=std::upper_bound(at[d][rem].begin(),at[d][rem].end(),K)-at[d][rem].begin();
    }
    answer(ans);
  }
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25124 KB Output is correct
2 Correct 25 ms 25052 KB Output is correct
3 Correct 25 ms 25180 KB Output is correct
4 Correct 25 ms 24952 KB Output is correct
5 Correct 24 ms 24952 KB Output is correct
6 Correct 25 ms 25080 KB Output is correct
7 Correct 25 ms 24952 KB Output is correct
8 Correct 26 ms 25080 KB Output is correct
9 Correct 27 ms 25208 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25124 KB Output is correct
2 Correct 25 ms 25052 KB Output is correct
3 Correct 25 ms 25180 KB Output is correct
4 Correct 25 ms 24952 KB Output is correct
5 Correct 24 ms 24952 KB Output is correct
6 Correct 25 ms 25080 KB Output is correct
7 Correct 25 ms 24952 KB Output is correct
8 Correct 26 ms 25080 KB Output is correct
9 Correct 27 ms 25208 KB Output is correct
10 Correct 25 ms 24952 KB Output is correct
11 Correct 38 ms 27100 KB Output is correct
12 Correct 59 ms 28636 KB Output is correct
13 Correct 85 ms 40920 KB Output is correct
14 Correct 152 ms 37548 KB Output is correct
15 Correct 195 ms 39244 KB Output is correct
16 Correct 147 ms 34560 KB Output is correct
17 Runtime error 170 ms 68820 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 25124 KB Output is correct
2 Correct 25 ms 25052 KB Output is correct
3 Correct 25 ms 25180 KB Output is correct
4 Correct 25 ms 24952 KB Output is correct
5 Correct 24 ms 24952 KB Output is correct
6 Correct 25 ms 25080 KB Output is correct
7 Correct 25 ms 24952 KB Output is correct
8 Correct 26 ms 25080 KB Output is correct
9 Correct 27 ms 25208 KB Output is correct
10 Correct 25 ms 24952 KB Output is correct
11 Correct 38 ms 27100 KB Output is correct
12 Correct 59 ms 28636 KB Output is correct
13 Correct 85 ms 40920 KB Output is correct
14 Correct 152 ms 37548 KB Output is correct
15 Correct 195 ms 39244 KB Output is correct
16 Correct 147 ms 34560 KB Output is correct
17 Runtime error 170 ms 68820 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -