154 - Recycling/154.cpp

   1 /*
   2   Problem: 154 - Recycling
   3   Andrés Mejía-Posada (andmej@gmail.com)
   4  */
   5 using namespace std;
   6 #include <algorithm>
   7 #include <iostream>
   8 #include <iterator>
   9 #include <sstream>
  10 #include <fstream>
  11 #include <cassert>
  12 #include <climits>
  13 #include <cstdlib>
  14 #include <cstring>
  15 #include <string>
  16 #include <cstdio>
  17 #include <vector>
  18 #include <cmath>
  19 #include <queue>
  20 #include <deque>
  21 #include <stack>
  22 #include <list>
  23 #include <map>
  24 #include <set>
  25
  26 #define D(x) cout << #x " is " << x << endl
  27
  28 vector<int> score;
  29 vector<string> lines;
  30
  31 int diff(string a, string b){
  32   map<char, char> ma, mb;
  33   for (int i=0; i<20; i += 4){
  34     ma[a[i]] = a[i+2];
  35     mb[b[i]] = b[i+2];
  36   }
  37   const string letters = "bogry";
  38   int ans = 0;
  39   for (int i=0; i<letters.size(); ++i){
  40     ans += (ma[letters[i]] != mb[letters[i]]);
  41   }
  42   return ans;
  43 }
  44
  45 int main(){
  46   string s;
  47   while (getline(cin, s) && s != "#"){
  48     lines.clear();
  49     lines.push_back(s);
  50     while (getline(cin, s) && s[0] != 'e'){
  51       lines.push_back(s);
  52     }
  53     int n = lines.size();
  54     score.resize(n);
  55     for (int i=0; i<n; ++i){
  56       score[i] = 0;
  57       for (int j=0; j<n; ++j){
  58         score[i] += diff(lines[i], lines[j]);
  59       }
  60     }
  61     printf("%d\n", min_element(score.begin(), score.end()) - score.begin() + 1);
  62   }
  63   return 0;
  64 }