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  1. #define _CRT_SECURE_NO_WARNINGS
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4. #include <ext/pb_ds/assoc_container.hpp>
  5. #include <ext/pb_ds/tree_policy.hpp>
  6. using namespace __gnu_pbds;
  7.  
  8.  
  9. #define ull                  unsigned long long
  10. #define ll                   long long
  11. #define ff                   first
  12. #define ss                   second
  13. #define all(v)		         ((v).begin()), ((v).end())
  14. #define allr(v)		         ((v).rbegin()), ((v).rend())
  15. #define pb                    push_back
  16. #define iq(v)                 v.resize(unique(v.begin(),v.end())-v.begin())
  17. #define bye                   return 0
  18. #define yes                   cout << "YES\n"
  19. #define no                    cout << "NO\n"
  20. #define TC                    int t_t=1;cin>>t_t;while (t_t--)
  21. #define endl                  '\n'
  22. #define clr(v,d)              memset(v,d,sizeof(v))
  23. #define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
  24. const ll OO = LLONG_MAX ;
  25. const ll Mod=1e9+7;
  26. const int N = 1e5+5 ;
  27. void fast()
  28. {
  29.     std::ios_base::sync_with_stdio(0);
  30.     cin.tie(NULL);
  31. #ifndef ONLINE_JUDGE
  32.     freopen("Input.txt", "r", stdin);
  33.     freopen("Output.txt", "w", stdout);
  34. #endif
  35. }
  36. int a[5] ;
  37. ll x =23 ;
  38. bool solve(int idx , ll sum)
  39. {
  40.     if (idx == 5)
  41.     {
  42.         return sum == x ;
  43.     }
  44.     return solve(idx+1 , sum -=a[idx]) ||
  45.            solve(idx+1 , sum +=a[idx]) ||
  46.            solve(idx+1 , sum *=a[idx])   ;
  47. }
  48. int main() {
  49.     fast();
  50.     while (1)
  51.     {
  52.         cin>>a[0]>>a[1]>>a[2]>>a[3]>>a[4] ;
  53.         if ( a[0] == 0 && a[1] == 0 && a[2] == 0 && a[3] == 0 && a[4] == 0 ) return 0 ;
  54.         sort(a,a+5) ;
  55.         bool ok = false ;
  56.         do {
  57.             if (solve(1, a[0]))
  58.             {
  59.                 ok = 1 ;
  60.                 break ;
  61.             }
  62.         }
  63.         while (next_permutation(a,a+5)) ;
  64.         if (ok)
  65.             cout << "Possible\n" ;
  66.         else
  67.             cout << "Impossible\n" ;
  68.     }
  69.    return 0;
  70. }
Success #stdin #stdout 0.01s 5312KB
comments (?)
stdin 
1 1 1 1 1
1 2 3 4 5
2 3 5 7 11
0 0 0 0 0
stdout 
Impossible
Possible
Possible
https://ideone.com/sh4a6w
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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