newfile.cxx

#include <iostream>
using namespace std;
int main()
{
    int c, mox, max = -1, mox_c = 0, max_c = 0;
    cin >> c;
    while (c != 0)
    {
        //Если ввод равен
        if (c == mox_c)
        {
            mox = mox + 1;
        }
        else if (c == max_c)
        {
            max = max + 1;
        }
        else if (c != mox_c)
        {
            mox_c = c;
            mox = 1;
        }
        else if (mox > max)
        {
            max = mox;
            max_c = mox_c;
            mox = -1;
            mox_c = -1;
        }
        cin >> c;
    }
    cout << max;
return 0;
}