Submission #373112

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
373112	2021-03-03 12:25:30	mariowong	Martian DNA (BOI18_dna)	C++14	100 / 100	41 ms	4608 KiB

dna

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#include <bits/stdc++.h>
using namespace std;
int m,q,n,ans,l,r,u,v,ct[200005],now[200005],ok,a[200005]; 
int main(){
  ios::sync_with_stdio(false);
  cin >> n >> m >> q;
  for (int i=1;i<=n;i++){
    cin >> a[i];
  }
  for (int i=1;i<=q;i++){
    cin >> u >> v;
    ct[u]=v;
  }
  l=1; r=0; ans=1e9;
  while (l <= n && r <= n){
    if (ok == q){
      ans=min(ans,r-l+1);
      if (now[a[l]] == ct[a[l]])
      ok--;
      now[a[l]]--;
      l++;
    }
    else
    {
      r++;
      now[a[r]]++;
      if (now[a[r]] == ct[a[r]])
      ok++;
    }
 
 
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• Subtask 1: 16 / 16
• Subtask 2: 24 / 24
• Subtask 3: 28 / 28
• Subtask 4: 32 / 32