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 "grader.h"
#include "memory.h"
int const nmax = 50;
char v[1 + nmax * 2];
void play() {
  for(int i = 1; i <= nmax; i++)
    v[i] = faceup(i);
  for(int i = 1; i <= nmax; i++)
    for(int j = i + 1; j <= nmax; j++)
      if(v[i] == v[j]){
        faceup(i);
        faceup(j);
      }
}
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