#include <bits/stdc++.h>   int main() {     int a, b, c, d, e, f;     scanf( %d , &a);     e = 0;     for (b = 1; b <= a; b++) {       for (c = b; c <= a; c++) {         f = b ^ c;         d = 0 ^ f;         if (b + c > d && d <= a && d >= c) {           e++;         }       }     }     printf( %d n , e);     return 0;   }   