oj.uz

Submission #971379

# Submission time Handle Problem Language Result Execution time Memory
971379 2024-04-28T12:31:10 Z AlperenT_ Rainforest Jumps (APIO21_jumps) C++17
0 / 100
 4000 ms 46692 KB 
#include "jumps.h"

#include <vector>
#include <bits/stdc++.h>

#pragma GCC optimize("O3,unroll-loops")
#define pb push_back
#define F first
#define S second 
#define ld long double
#define all(a) a.begin(),a.end()
#define pii pair <int,int>
#define PII pair<pii , pii>
#define sz(v) (int)v.size()
#define rep(i , a , b) for(int i=a;i <= (b);i++)
#define per(i , a , b) for(int i=a;i >= (b);i--)
#define deb(x) cout <<#x << " : " << x << "\n" ;
using namespace std ;
const int maxn = 2e5 + 10 , maxq = 32, inf = 1e9+10 , lg = 19  ,sq = 707 ,mod = 998244353 ;
int mx[maxn][lg+1] , c = 1 , L[maxn] , R[maxn], h[maxn] , dis[maxn] , par[maxn][lg+1] , par2[maxn ];
vector< int> G[maxn] ;

void dfs(int v){
  for(int u : G[v]){
    dis[u] = dis[v] + 1; 
    dfs(u) ;
  }
}

void init(int n, vector<int> H) {
  rep(i ,1 ,n){
    h[i] = H[i-1] ;
    mx[i][0] = i ;
  }
  vector <int> vec;;
  rep(i , 1, n){
    while(sz(vec) && h[vec.back()] < h[i])vec.pop_back() ;
    L[i] = -1 ;
    if(sz(vec)!=0)L[i] = vec.back() ;
    vec.pb(i) ;
  }
  vec.clear() ;
  per(i ,n,1){
    while(sz(vec) && h[vec.back()] < h[i])vec.pop_back() ;
    R[i] = -1 ;
    if(sz(vec)!=0)R[i] = vec.back() ;
    vec.pb(i) ;
  }
  int id =0 ;
  rep(i ,1 ,n){
    if(L[i]+R[i] == -2){
      id = i ;
      continue ;
    }
    if(L[i]!=-1 && (R[i] == -1 || h[L[i]] < h[R[i]])){
      G[L[i]].pb(i) ;par2[i] = L[i] ;
      if(R[i] == -1)par[i][0] = L[i] ;
      else par[i][0] = R[i] ;
    }else{
      G[R[i]].pb(i) ;par2[i] = R[i] ;
      if(L[i] == -1)par[i][0] = R[i] ;
      else par[i][0] = L[i] ;
    }
  }
  dfs(id) ;
  rep(i ,1 ,n){
    rep(j , 1 ,lg){
      par[i][j] = par[par[i][j-1]][j-1];
    }
  }
}

int answer(int a, int b){
  if(L[b] >= a)return inf ;
  int ans =0 ;
  per(i , lg , 0){
    if(par[a][i] != 0 && dis[par[a][i]] >= dis[b]){
      a = par[a][i] ;
      ans += (1<<i);
    }
  }
  while(a != b){
    ans ++ ;
    a = par2[a] ;
  }
  return ans;
}

int minimum_jumps(int A, int B, int C, int D) {
  A++;B++;C++;D++;
  int ans = inf ;
  rep(i , A ,B){
    rep(j, C , D){
      ans = min(ans , answer(i , j)) ;
    }
  }
  return (ans == inf ? -1 : ans)  ;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Execution timed out 4043 ms 46692 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 2 ms 10840 KB Output is correct
4 Correct 2 ms 10840 KB Output is correct
5 Correct 3 ms 10856 KB Output is correct
6 Correct 3 ms 10840 KB Output is correct
7 Correct 3 ms 10840 KB Output is correct
8 Correct 3 ms 10840 KB Output is correct
9 Correct 3 ms 10840 KB Output is correct
10 Correct 3 ms 10840 KB Output is correct
11 Correct 37 ms 10840 KB Output is correct
12 Correct 24 ms 10840 KB Output is correct
13 Correct 10 ms 10840 KB Output is correct
14 Correct 3 ms 10840 KB Output is correct
15 Incorrect 15 ms 10840 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 2 ms 10840 KB Output is correct
4 Correct 2 ms 10840 KB Output is correct
5 Correct 3 ms 10856 KB Output is correct
6 Correct 3 ms 10840 KB Output is correct
7 Correct 3 ms 10840 KB Output is correct
8 Correct 3 ms 10840 KB Output is correct
9 Correct 3 ms 10840 KB Output is correct
10 Correct 3 ms 10840 KB Output is correct
11 Correct 37 ms 10840 KB Output is correct
12 Correct 24 ms 10840 KB Output is correct
13 Correct 10 ms 10840 KB Output is correct
14 Correct 3 ms 10840 KB Output is correct
15 Incorrect 15 ms 10840 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 2 ms 10852 KB Output is correct
4 Correct 2 ms 10840 KB Output is correct
5 Correct 299 ms 39900 KB Output is correct
6 Execution timed out 4013 ms 45956 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 2 ms 10840 KB Output is correct
4 Incorrect 160 ms 29796 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 2 ms 10840 KB Output is correct
4 Incorrect 160 ms 29796 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Execution timed out 4043 ms 46692 KB Time limit exceeded
4 Halted 0 ms 0 KB -