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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define SI1(v)  scanf("%d",&v)					    // int 1
  4. #define SI2(v1,v2)  scanf("%d%d",&v1,&v2)	     	// int 2
  5. #define SI3(v1,v2,v3)  scanf("%d%d%d",&v1,&v2,&v3)  // int 3
  6. #define SLL1(v)  scanf("%lld",&v)					// long long 1
  7. #define SLL2(v1,v2)  scanf("%lld%lld",&v1,&v2)      // long long 2
  8. #define PI1(v)  printf("%d\n",v)					    // int 1
  9. #define PI2(v1,v2)  printf("%d %d\n",v1,v2)	     	// int 2
  10. #define PLL1(v)  printf("%lld\n",v)					// long long 1
  11. #define Line    printf("\n");
  12. typedef long long ll;
  13. vector<ll>V;
  14. map<string,int>M;
  15. bool vis[20];
  16. void solve(string s,ll c,int l)
  17. {
  18.     if(s[0]=='0')return;
  19.     ll v =stoi(s);
  20.     if(v%5==0)
  21.     {
  22.         V.push_back(c);
  23.         return;
  24.     }
  25.  
  26.     for(int i=0; i<s.size()-1; i++)
  27.     {
  28.         if(i == l ) continue;
  29.         swap(s[i],s[i+1]);
  30.         //cout<<s<<endl;
  31.         solve(s,c+1,i);
  32.         swap(s[i],s[i+1]);
  33.     }
  34.  
  35. }
  36. int main()
  37. {
  38.   //  freopen("read.txt","r",stdin);
  39.     string n;
  40.     cin>>(n);
  41.  
  42.     solve(n,0,-1);
  43.     if(V.size())
  44.     {
  45.         sort(V.begin(),V.end());
  46.         PLL1(V[V.size()-1]);
  47.     }
  48.     else
  49.         PI1(-1);
  50. }
  51.  
Runtime error #stdin #stdout #stderr 0s 4292KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoi
https://ideone.com/9CPZY2
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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