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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  void fastscan(int &x)
  4.     {
  5.         bool neg=false;
  6.         register int c;
  7.         x =0;
  8.         c=getchar();
  9.         if(c=='-')
  10.         {
  11.             neg = true;
  12.             c=getchar();
  13.         }
  14.         for(;(c>47 && c<58);c=getchar())
  15.             x = (x<<1) + (x<<3) +c -48;
  16.         if(neg)
  17.             x *=-1;
  18.     }
  19. int main()
  20. {
  21. int a,b,c,d,e,f,g,h;
  22. vector <int> ve;
  23. fastscan(a);
  24. h=0;
  25. for(b=0;b<a;b++)
  26. {fastscan(g);
  27. ve.push_back(g);
  28. }
  29. sort(ve.begin(),ve.end());
  30. for(b=0;b<a;b++)
  31. {
  32.     if(b==0)
  33.     {
  34.         if(ve[b]!=ve[b+1])
  35.         {
  36.             break;
  37.         }
  38.     }
  39.     else if(b==a-1)
  40.     {
  41.         if(ve[b]!=ve[b-1])
  42.         {
  43.             break;
  44.         }
  45.     }
  46.     else
  47.     {
  48.         if(ve[b]!=ve[b-1] && ve[b]!=ve[b+1])
  49.             break;
  50.     }
  51. }
  52. cout<<ve[b]<<"\n";}
  53.  
Runtime error #stdin #stdout 0s 15240KB
comments ()
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/zuqvVw
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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