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  1. //NiceDuck
  2. #include "bits/stdc++.h"
  3. typedef long long ll;
  4. using namespace std;
  5. #define FILE "000"
  6. #define foru(i,a,b) for(int i=(int)(a); i<=(int)(b); ++i)
  7. #define ford(i,a,b) for(int i=(int)(a); i>=(int)(b); --i)
  8. #define fastio ios_base::sync_with_stdio(0);cin.tie(0);
  9. #define pb push_back
  10. #define fi first
  11. #define se second
  12. #define pii pair<int,int>
  13. #define pil pair<int,ll>
  14. #define pli pair<ll,int>
  15. #define MOD 1000000007
  16. #define el "\n"
  17.  
  18. const int MAX=2e5+5;
  19. int n,h[MAX];
  20. ll a[MAX],k;
  21.  
  22. int solve()
  23. {
  24.     int ans=0;
  25.     ll prefix[n+3];
  26.     memset(prefix,0,sizeof(prefix));
  27.     foru(i,1,n) prefix[i]=prefix[i-1]+a[i];
  28.     int curLen=0;
  29.     foru(i,1,n)
  30.     {
  31.         if(i==1 && a[1]<=k) 
  32.         {
  33.             curLen=1;
  34.             ans=max(ans,curLen);
  35.         }
  36.         else if(i>1)
  37.         {
  38.             if(h[i-1]%h[i]==0) 
  39.             {
  40.                 ++curLen;
  41.                 int l=i-curLen, r=i-1, res=-1;
  42.                 while(l<=r)
  43.                 {
  44.                     int m=(l+r)>>1;
  45.                     if(prefix[i]-prefix[m]<=k)
  46.                     {
  47.                         res=m;
  48.                         r=m-1;
  49.                     }
  50.                     else l=m+1;
  51.                 }
  52.                 if(res!=-1) ans=max(ans,i-res);
  53.             }
  54.             else 
  55.             {
  56.                 if(a[i]<=k)
  57.                 {
  58.                     curLen=1;
  59.                     ans=max(ans,curLen);
  60.                 }
  61.             }
  62.         }
  63.     }
  64.     return ans;
  65. }
  66.  
  67. int main()
  68. {
  69.     fastio
  70.     if(fopen(FILE ".inp","r"))
  71.     {
  72.         freopen(FILE ".inp","r",stdin);
  73.         freopen(FILE ".out","w",stdout);
  74.     }
  75.  
  76.     int t; cin>>t;
  77.     while(t--)
  78.     {
  79.         cin>>n>>k;
  80.         foru(i,1,n) cin>>a[i];
  81.         foru(i,1,n) cin>>h[i];
  82.         cout<<solve()<<el;
  83.     }
  84.  
  85.     return 0;
  86. }
Success #stdin #stdout 0.01s 5312KB
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https://ideone.com/L3RRWX
language:
C++14 (gcc 8.3)
created:
22 hours ago
visibility:
public

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