Submission #3600319

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Source Code Expand

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main(void){
    int n, a[100010];
    cin >> n;
    for (int i = 0; i < n; i++) cin >> a[i];
    sort(a, a + n);
    
    int ans = 0, cons = 1;
    for (int i = 1; i < n; i++) {
        if (a[i - 1] == a[i]) cons++;
        else {
            if (cons % 2 == 1) ans++;
            cons = 1;
        }
    }
    if (cons % 2 == 1) ans++;
    
    cout << ans << endl;
}

Submission Info

Judge Result