ravikiran0606

#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define mod 1e9+7

using namespace std;

int tonum(char c){
    return c-'0';

ravikiran0606

    #include<iostream>
    using namespace std;
    class digit{
        int val;
        public:
            digit();
            digit(int num);
            friend istream& operator >>(istream& inp,digit &a){
                inp>>a.val;
                return inp;

ravikiran0606

    #include<iostream>
    #define maxi 1000
    using namespace std;
    struct strqueue{
        int a[maxi];
        int f,r;
    };
    class qqueue{
        strqueue q;
        public:

ravikiran0606

    #include<iostream>
    #define maxi 1000

    using namespace std;

    struct strstack{
        int a[maxi];
        int top;
    };

ravikiran0606

    #include<iostream>

    using namespace std;

    class temp{
        public:
            void fn();
            void constantfn() const;
    };

ravikiran0606

    

#include<iostream>
    #include<cstring>
    using namespace std;
    class sstring{
        char* s;
        int len;
        public:
            sstring();
            sstring(char *a);
            void concat(sstring x,sstring y);

ravikiran0606

    #include<iostream>
    #include<string>
    using namespace std;
    class second{
        private:
            string a,b;
        public:
            second(string x,string y);
        friend class first;
    };

ravikiran0606

    #include<iostream>
    #define maxi 1000
    using namespace std;
    class qqueue{
        int a[maxi];
        int f,r;
        public:
        void initialize();
        void enqueue(int val);
        void dequeue();

ravikiran0606

    #include<iostream>
    #define maxi 1000

    using namespace std;

    class sstack{
        int a[maxi];
        int top;

        public:

ravikiran0606

    #include<iostream>

    using namespace std;

    // Creating a class time...

    class time{
        int hour,minute;

        public: