This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
#include "grader.h"
#include "memory.h"
using namespace std;
#define pb push_back
int mark[55];
char c[55];
void play()
{
    for(int i=1 ; i<=50 ; i++)
    {
        c[i] = faceup(i);
    }
    memset(mark, 0, sizeof mark);
    for(int i=1 ; i<=50 ; i++)
    {
        if(mark[i]) continue ;
        for(int j=i+1 ; j<=50 ; j++)
        {
            if(mark[j]) continue ;
            if(c[i] == c[j])
            {
                faceup(i), faceup(j);
            }
        }
    }
}
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