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"
#define f first
#define s second
using namespace std;
void play() {
vector<pair<int,int>> v(25);
for(int i=1;i<=50;i++) {
char x = faceup(i);
if(v[x-97].f) v[x-97].s = i;
else v[x-97].f = i;
}
for(auto i:v) {faceup(i.f); faceup(i.s);}
}
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