/in/foo.cc: In function 'long long int sum(const long long int&)':
/in/foo.cc:51:18: warning: right operand of comma operator has no effect [-Wunused-value]
   51 |     for (i = 1, j; i <= tot; ++i)
      |                  ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:69:106: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   69 |                     (dis[++tot] = z, Gmap[val[tot] = (LL) pow(2, i) * pow(3, j) * pow(5, k) * pow(7, l)] = tot);