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  1. #include<bits/stdc++.h>
  2. #pragma GCC optimize("Ofast")
  3. #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
  4. using namespace std;
  5. #define int long long
  6. #define all(x) x.begin(),x.end()
  7. #define pb push_back
  8. #define rall(x) x.rbegin(),x.rend()
  9. const int N=1,mod=998244353,MOD=1e9+7,INF=1e18,inf=1e9;
  10. signed main(){
  11.     ios::sync_with_stdio(false);
  12.     cin.tie(NULL);
  13.     //freopen("input.txt","r",stdin);
  14.     //freopen("output.txt","w",stdout);
  15.     int testcasescount=1;
  16.     cin>>testcasescount;
  17.     while(testcasescount--){
  18.         int n,k,sum=0,cnt=0;
  19.         cin>>n>>k;
  20.         int a[n],b[n];
  21.         for(int i=0;i<n;i++){
  22.             cin>>a[i];
  23.         }
  24.         for(int i=0;i<n;i++){
  25.             cin>>b[i];
  26.         }
  27.         sort(a,a+n);
  28.         sort(b,b+n);
  29.         reverse(b,b+n);
  30.         int j=0,ans=0;
  31.         bool ch=true;
  32.         for(int i=0;i<n;i++){
  33.             if(a[i]+1>k){
  34.                 break;
  35.             }
  36.             int y=k%((k/(a[i]+1))+1);
  37.             if(y==0){
  38.                 break;
  39.             }
  40.             while(j<n&&b[j]>y){
  41.                 j++;
  42.                 if(j==n){
  43.                     ch=false;
  44.                     break;
  45.                 }
  46.                 else if(j<n&&y>=b[j]){
  47.                     break;
  48.                 }
  49.             }
  50.             if(!ch){
  51.                 break;
  52.             }
  53.             else{
  54.                 j++;
  55.                 ans++;
  56.             }
  57.         }
  58.         cout<<ans<<'\n';
  59.     }
  60. }
  61. //Allahu Akbar
  62.  
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/sUvSpB
language:
C++14 (gcc 8.3)
created:
16 hours ago
visibility:
public

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