UVa/120 - Stacks of flapjacks/120.cpp

   1 /*
   2   Problem: 120 - Stack of flapjacks
   3   Author: Andrés Mejía-Posada
   4   (http://blogaritmo.factorcomun.org)
   5
   6  */
   7
   8 using namespace std;
   9 #include <algorithm>
  10 #include <iostream>
  11 #include <iterator>
  12 #include <sstream>
  13 #include <fstream>
  14 #include <cassert>
  15 #include <climits>
  16 #include <cstdlib>
  17 #include <cstring>
  18 #include <string>
  19 #include <cstdio>
  20 #include <vector>
  21 #include <cmath>
  22 #include <queue>
  23 #include <deque>
  24 #include <stack>
  25 #include <map>
  26 #include <set>
  27
  28 int main(){
  29
  30   string s;
  31   while (getline(cin, s)){
  32     stringstream sin(s);
  33
  34     vector<int> v, sol;
  35     for (int x; sin >> x; v.push_back(x), sol.push_back(x));
  36     sort(sol.begin(), sol.end(), greater<int>());
  37
  38     cout << v[0];
  39     for (int i=1; i<v.size(); ++i) cout << " " << v[i];
  40     cout << endl;
  41
  42     reverse(v.begin(), v.end());
  43
  44     int n = v.size();
  45
  46     int llevo = 0;
  47     while (llevo < n){
  48       int i=llevo;
  49       while (v[i] != sol[llevo]) ++i;
  50       if (i > llevo){
  51         if (i+1 < n) cout << i+1 << " ";
  52         reverse(v.begin()+i, v.end());
  53         if (llevo+1 < n) cout << llevo+1 << " ";
  54         reverse(v.begin()+llevo, v.end());
  55       }
  56       llevo++;
  57     }
  58     cout << "0\n";
  59   }
  60   return 0;
  61 }