competitive-programming/solved-topcoder/Solved/DoubleLetter.cpp at master · the-redback/competitive-programming · GitHub

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/**
 *                                   ____
 *       ____ ___  ____ ________  __/ __/
 *      / __ `__ \/ __ `/ ___/ / / / /_
 *     / / / / / / /_/ / /  / /_/ / __/
 *    /_/ /_/ /_/\__,_/_/   \__,_/_/
 *
 *    @link : https://the-redback.com
 */

#include <bits/stdc++.h>

using namespace std;

typedef long long LL;
typedef unsigned long long LLU;

#define ft        first
#define sd        second
#define mp        make_pair
#define pb(x)     push_back(x)
#define all(x)    x.begin(), x.end()
#define allr(x)   x.rbegin(), x.rend()
#define mem(a, b) memset(a, b, sizeof(a))
#define meminf(a) memset(a, 126, sizeof(a))
#define inf       1e11
#define eps       1e-9
#define mod       1000000007
#define NN        1010

// cout << setfill('0') << setw(3) << a << endl;
// cout << fixed << setprecision(20) << a << endl;

struct DoubleLetter {
    string ableToSolve(string s) {
        string ret;
        string ss;
        int fl = 1;
        while (1 && s.size() >= 2 && fl) {
            fl = 0;
            for (int i = 0; i < s.size() - 1;) {
                if (s[i] == s[i + 1]) {
                    fl = 1;
                    ss = "";
                    for (int j = 0, k = 0; j < s.size(); j++, k++) {
                        if (j == i || j == i + 1)
                            continue;
                        else
                            ss += s[j];
                    }
                    s = ss;
                    break;
                } else
                    i++;
            }
        }
        if (s.size() == 0)
            ret = "Possible";
        else
            ret = "Impossible";
        return ret;
    }

    // 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();
        if ((Case == -1) || (Case == 5)) test_case_5();
        if ((Case == -1) || (Case == 6)) test_case_6();
    }

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 string& Expected, const string& 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() {
        string Arg0 = "aabccb";
        string Arg1 = "Possible";
        verify_case(0, Arg1, ableToSolve(Arg0));
    }
    void test_case_1() {
        string Arg0 = "aabccbb";
        string Arg1 = "Impossible";
        verify_case(1, Arg1, ableToSolve(Arg0));
    }
    void test_case_2() {
        string Arg0 = "abcddcba";
        string Arg1 = "Possible";
        verify_case(2, Arg1, ableToSolve(Arg0));
    }
    void test_case_3() {
        string Arg0 = "abab";
        string Arg1 = "Impossible";
        verify_case(3, Arg1, ableToSolve(Arg0));
    }
    void test_case_4() {
        string Arg0 = "aaaaaaaaaa";
        string Arg1 = "Possible";
        verify_case(4, Arg1, ableToSolve(Arg0));
    }
    void test_case_5() {
        string Arg0 = "aababbabbaba";
        string Arg1 = "Impossible";
        verify_case(5, Arg1, ableToSolve(Arg0));
    }
    void test_case_6() {
        string Arg0 = "zzxzxxzxxzzx";
        string Arg1 = "Possible";
        verify_case(6, Arg1, ableToSolve(Arg0));
    }

    // END CUT HERE
};

// BEGIN CUT HERE
int main() {
    DoubleLetter ___test;
    ___test.run_test(-1);
    int gbase;
    cin >> gbase;  // erase this line if you are not using dev-cpp! :)
    return 0;
}
// END CUT HERE