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  1. #include <iostream>
  2. #include <cstdio>
  3. #include <algorithm>
  4. #include <cstring>
  5. #include <string>
  6. #include <cctype>
  7. #include <stack>
  8. #include <queue>
  9. #include <vector>
  10. #include <map>
  11. #include <sstream>
  12. #include <cmath>
  13. #include <limits>
  14. #include <utility>
  15. #include <iomanip>
  16. #include <set>
  17. #include <numeric>
  18. #include <cassert>
  19. #include <ctime>
  20.  
  21. #define INF_MAX 2147483647
  22. #define INF_MIN -2147483647
  23. #define INF_LL 9223372036854775807LL
  24. #define INF 2000000000
  25. #define PI acos(-1.0)
  26. #define EPS 1e-8
  27. #define LL long long
  28. #define mod 1000000007
  29. #define pb push_back
  30. #define mp make_pair
  31. #define f first
  32. #define s second
  33. #define setzero(a) memset(a,0,sizeof(a))
  34. #define setdp(a) memset(a,-1,sizeof(a))
  35. #define bits(a) __builtin_popcount(a)
  36.  
  37. using namespace std;
  38.  
  39. int cnt[100005], vis[100005], steps[100005];
  40.  
  41. int main()
  42. {
  43.   //ios_base::sync_with_stdio(0);
  44.   //freopen("lca.in", "r", stdin);
  45.   //freopen("lca.out", "w", stdout);
  46.   int n, res = INF, x, y;
  47.   scanf("%d", &n);
  48.   for(int i=1;i<=n;i++)
  49.   {
  50.     scanf("%d", &x);
  51.     queue<pair<int, int> > q;
  52.     q.push(mp(x, 0));
  53.     while(!q.empty())
  54.     {
  55.       x = q.front().f;
  56.       y = q.front().s;
  57.       q.pop();
  58.       if(x > 100003) continue;
  59.       if(vis[x] == i) continue;
  60.       vis[x] = i;
  61.       steps[x]+=y;
  62.       cnt[x]++;
  63.       q.push(mp(x * 2, y + 1));
  64.       q.push(mp(x / 2, y + 1));
  65.     }
  66.   }
  67.   for(int i=0;i<=100000;i++)
  68.     if(cnt[i] == n)
  69.       if(res > steps[i])
  70.         res = steps[i];
  71.   printf("%d", res);
  72.   return 0;
  73. }
Success #stdin #stdout 0s 4452KB
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https://ideone.com/9wXvKz
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
secret

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