Submission #577059

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
577059	2022-06-14 00:53:26	Pietra	Martian DNA (BOI18_dna)	C++14	100 / 100	54 ms	4480 KiB

dna

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#include<bits/stdc++.h>
using namespace std ; 
const int maxn = 2e5 + 5 ; 
int n, k, r, freq[maxn], v[maxn], qtd[maxn] ; 
bool check(int x){
  // cout << x << ":\n" ;
  for(int i = 0 ; i <= k ; i++) freq[i] = 0 ; 
  int ct = 0 ; 
  for(int i = 1 ; i <= x ; i++){
    freq[v[i]]++ ; 
    if(freq[v[i]] == qtd[v[i]]) ct++ ;   
  }
  if(r == ct) return 1 ; 
  for(int i = x + 1 ; i <= n ; i++){
    if(freq[v[i-x]] == qtd[v[i-x]]) ct-- ; 
    freq[v[i-x]]-- ; freq[v[i]]++ ;  
    if(freq[v[i]] == qtd[v[i]]) ct++ ; 
    if(r == ct) return 1 ; 
  }
  if(r == ct) return 1 ; 
 
 
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• Subtask 1: 16 / 16
• Subtask 2: 24 / 24
• Subtask 3: 28 / 28
• Subtask 4: 32 / 32