Submission #3600122

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Source Code Expand

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <numeric>
using namespace std;

int main(void){
   int N;
   cin>>N;
   int a[N];
   for(int i=0;i<N;i++){
       cin>>a[i];
   }
   sort(a,a+N);
   int ans=0; int check=0;
   int before=0;
   for(int i=0;i<N;i++){
      if(before!=a[i]&&check%2==0) {check++;}
      else if(before!=a[i]&&check%2==1) {ans++; check=0;}
      else if(before==a[i]) {check++;}
   }
   cout<<ans;
   return 0;
}

Submission Info

Judge Result