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- #include <bits/stdc++.h>
- using namespace std;
- #define ll long long
- #define test int t; cin>>t; for(int cs=1;cs<=t;cs++)
- int main()
- {
- ios_base::sync_with_stdio(0);
- cin.tie(0);cout.tie(0);
- ll n,ans=0,i,j,k,l;
- cin>>n;
- for(i=1;i<=n-1;i++)
- {
- for(j=i+1;j<=n;j++)
- {
- k=i^j;
- if(i+j>k && j+k>i && k+i>j && i<j && j<k && i<k && k<=n)
- {
- ans++;
- }
- }
- }
- cout<<ans<<endl;
- return 0;
- }
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