#include <iostream>

#include <vector>

#include <queue>

#include <string>

#include <list>

#include <set>

#include <map>

#include <sstream>

#include <algorithm>

#include <cstring>

#include <cmath>

#include <ctime>

using namespace std;

#define clr(x) memset(x, 0, sizeof(x))

class TheKnights

{

public:

double find(int n, int a, int b);

// BEGIN CUT HERE

public:

void run_test(int Case) { if ((Case == -1) || (Case == 0)) test_case_0(); if ((Case == -1) || (Case == 1)) test_case_1(); if ((Case == -1) || (Case == 2)) test_case_2(); if ((Case == -1) || (Case == 3)) test_case_3(); if ((Case == -1) || (Case == 4)) test_case_4(); }

private:

template <typename T> string print_array(const vector<T> &V) { ostringstream os; os << "{ "; for (typename vector<T>::const_iterator iter = V.begin(); iter != V.end(); ++iter) os << '\"' << *iter << "\","; os << " }"; return os.str(); }

void verify_case(int Case, const double &Expected, const double &Received) { cerr << "Test Case #" << Case << "..."; if (Expected == Received) cerr << "PASSED" << endl; else { cerr << "FAILED" << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } }

void test_case_0() { int Arg0 = 2; int Arg1 = 1; int Arg2 = 1; double Arg3 = 3.3333333333333335; verify_case(0, Arg3, find(Arg0, Arg1, Arg2)); }

void test_case_1() { int Arg0 = 47; int Arg1 = 7; int Arg2 = 74; double Arg3 = 2.0; verify_case(1, Arg3, find(Arg0, Arg1, Arg2)); }

void test_case_2() { int Arg0 = 3; int Arg1 = 2; int Arg2 = 1; double Arg3 = 4.888888888888889; verify_case(2, Arg3, find(Arg0, Arg1, Arg2)); }

void test_case_3() { int Arg0 = 9999; int Arg1 = 999; int Arg2 = 99; double Arg3 = 16.25885103191273; verify_case(3, Arg3, find(Arg0, Arg1, Arg2)); }

void test_case_4() { int Arg0 = 10; int Arg1 = 1; int Arg2 = 6; double Arg3 = 7.636363636363637; verify_case(4, Arg3, find(Arg0, Arg1, Arg2)); }

// END CUT HERE

};

double TheKnights::find(int n, int a, int b)

{

}

// BEGIN CUT HERE

int main()

{

TheKnights ___test;

___test.run_test(-1);

system("pause");

return 0;

}

// END CUT HERE