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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5.     int t;
  6.     cin>>t;
  7.     while(t--)
  8.     {
  9.         int n;
  10.         cin>>n;
  11.         int a[n];
  12.         for(int i=0;i<n;i++)
  13.         {
  14.             cin>>a[i];
  15.         }
  16.         bool arr[100]={false};
  17.         for(int i=0;i<n;i++)
  18.         {
  19.             if(a[i]==0)
  20.             {
  21.                 for(int j=0;j<n;j++)
  22.                 arr[j]=0;
  23.             }
  24.             else
  25.             {
  26.                 arr[a[i]]=!arr[a[i]];
  27.             }
  28.         }
  29.         int count=0;
  30.         for(int i=0;i<n;i++)
  31.         {
  32.             count=count+arr[i];
  33.         }
  34.         cout<<count;
  35.     }
  36.     return 0;
  37. }
Success #stdin #stdout 0s 2744KB
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https://ideone.com/Cw5dbB
language:
C++ 4.3.2 (gcc-4.3.2)
created:
6 years ago
visibility:
public

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