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xor1.cpp
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76 lines (64 loc) · 1.02 KB
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//2*(x|A[i])-(x^A[i]) => x+A[i]
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define mk make_pair
#define fi first
#define se second
#define ll long long int
#define ld long double
#define MOD 1000000007
#define endl "\n"
#define pi pair<int,int>
#define JALDI ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
void so(vector<ll> &v)
{
sort(v.begin(),v.end());
}
ll bin(ll lo,ll hi,vector<ll> &v,ll key)
{
ll ans=0;
while(lo<=hi)
{
ll mid=(lo+hi)/2;
if(v[mid]>=key)
{
ans=(ll)v.size()-mid;
hi=mid-1;
}
else
{
lo=mid+1;
}
}
return ans;
}
int main()
{
JALDI;
ll t;
//cin>>t;
t=1;
while(t--)
{
ll n;
cin>>n;
vector<ll>v(n);
for(ll i=0;i<n;i++)
{
cin>>v[i];
}
so(v);
ll q;
cin>>q;
while(q--)
{
ll x,m;
cin>>x>>m;
ll z=m-x;
//cout<<"Key is "<<z<<endl;
cout<<bin(0,n-1,v,z)<<endl;
}
}
return 0;
}