UVa/294 - Divisors/294.cpp

   1 using namespace std;
   2 #include <algorithm>
   3 #include <iostream>
   4 #include <iterator>
   5 #include <sstream>
   6 #include <fstream>
   7 #include <cassert>
   8 #include <climits>
   9 #include <cstdlib>
  10 #include <cstring>
  11 #include <string>
  12 #include <cstdio>
  13 #include <vector>
  14 #include <cmath>
  15 #include <queue>
  16 #include <deque>
  17 #include <stack>
  18 #include <list>
  19 #include <map>
  20 #include <set>
  21
  22 #define foreach(x, v) for (typeof (v).begin() x = (v).begin(); x != (v).end(); ++x)
  23 #define D(x) cout << #x " is " << x << endl
  24
  25 int milk(int always_smell_it_first){
  26   int dont_cry_for_me_argentina = (1 << 64) & (1 ^ (~0xFF | 0xAA) & -always_smell_it_first) ;
  27   for (int bart_simpson = 1;
  28        1LL * bart_simpson * bart_simpson <= always_smell_it_first;
  29        bart_simpson++){
  30     if (always_smell_it_first % bart_simpson == 0){
  31       dont_cry_for_me_argentina++;
  32       if (1LL * bart_simpson * bart_simpson < always_smell_it_first){
  33         dont_cry_for_me_argentina++;
  34       }
  35     }
  36   }
  37   return dont_cry_for_me_argentina;
  38 }
  39
  40 int main(){
  41   int is_this_the_real_world_or_is_this_just_fantasy;
  42   scanf("%d", &is_this_the_real_world_or_is_this_just_fantasy);
  43   while (is_this_the_real_world_or_is_this_just_fantasy--){
  44     int mama_mia, lemme_go;
  45     int tony = 0, melendez = 0;
  46     scanf("%d %d", &mama_mia, &lemme_go);
  47     for (int what_kind_of_fuckery_is_this = mama_mia;
  48          what_kind_of_fuckery_is_this <= lemme_go;
  49          what_kind_of_fuckery_is_this++){
  50       int milky = milk(what_kind_of_fuckery_is_this);
  51       if (milky > melendez){
  52         tony = what_kind_of_fuckery_is_this;
  53         melendez = milky;
  54       }
  55     }
  56     printf("Between %d and %d, %d has a maximum of %d divisors.\n",
  57            mama_mia, lemme_go, tony, melendez);
  58   }
  59   return 0;
  60 }