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44 lines (43 loc) · 742 Bytes
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Apartments.cpp
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44 lines (43 loc) · 742 Bytes
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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
void solve(){
int n,m,k;
cin>>n>>m>>k;
vector<int> v(n);
for(int i=0;i<n;i++){
cin>>v[i];
}
vector<int> a(m);
for(int i=0;i<m;i++){
cin>>a[i];
}
sort(v.begin(),v.end());
sort(a.begin(),a.end());
int i=0,j=0;
int ans=0;
while(i<n and j<m){
if(abs(v[i]-a[j])<=k){
ans++;
i++;
j++;
}
else if(v[i]<a[j]){
i++;
}
else{
j++;
}
}
cout<<ans<<endl;
}
int main(){
ios_base::sync_with_stdio(false);cin.tie(NULL);
ll t;
// cin>>t;
t=1;
while(t--){
solve();
}
return 0;
}