#include "grader.h"
#include "memory.h"
#include <bits/stdc++.h>
using namespace std;
void play () {
    vector<int> index[25];
    for (int i = 1;i <= 50;i += 2) {
        char ch1 = faceup(i);
        char ch2 = faceup(i + 1);
        if (ch1 != ch2) {
            index[ch1 - 'A'].push_back(i);
            index[ch2 - 'A'].push_back(i + 1);
        }
    }
    for (int i = 0;i < 25;i ++) if (index[i].size() > 0) {
        assert(index[i].size() == 2);
        char ch1 = faceup(index[i][0]);
        char ch2 = faceup(index[i][1]);
        assert(ch1 == ch2);
    }
}
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