why the wrong answer? please tell me test № 5. sorry for bad english.

Edited by author 09.11.2010 02:45

#include <iostream>
#include <algorithm>
using namespace std;
int main()
{
    int mass[160]={0};
    int n,i,kolvo=0,xz=1;
    cin>>n;
    for (i = 0; i < n; i++) {
        cin>>mass[i];
    }
    sort(&mass[0],&mass[n]);

    for (i = 1; i < n; i++) {
        if (mass[i]==mass[i-1]) {
            xz++;
        }
        if (mass[i]!=mass[i+1]) {
            if (xz/4>=1) {
                kolvo+=xz/4.0;
                xz=1;
            }
        }
    }
    cout<<kolvo;
return 0;
}

You can use not only the wheels of the same size