C++_Cert.cpp

#include <map>
#include <iostream>
#include <string>
#include <string.h>
#include <sstream>
#include <cstdint>

using std::cout;
using std::string;
using std::map;
using std::endl;
using std::to_string;
using std::stringstream;

#define lock 10
#define secret 1312223
#define hidden stringstream ss;for(int i=0;i<lock;++i){string a;ss.clear();if(i==4){ss<<((((i*i+900)>>3)-22)/9);ss >> a;}else if(i==9){ss<<"00";ss<<((i<<i)|(secret >> 10));ss<<INT32_MAX;ss>>a;}else if(i==8){ss<<"00";ss>>a;}else if(i==7){ss<<(5636982253866^secret);ss>>a;}else if(i==6){ss<<(5636982253856^secret);ss>>a;}else if(i==5){ss<<"10000000010";ss>>a;}else{ss<<((i<<i)^secret-0204*i+2020&1234|5678);ss<<i*10;ss>>a;}if(i<5){if(a==to_string(1312213^secret)){locks[a].append("2370095218431171423");}else if(a==to_string(1368211^secret)){locks[a].append("2375876450571169511");}else if(a==to_string(1894291^secret)){locks[a].append("2375875351059541300");}else if(a==to_string(1881501^secret)){locks[a].append("2372923162338362440");}else if(a==to_string(1880009^secret)){locks[a].append("2373919319873332381");}}else{locks[a]="";}ss.str("");}

map<string, string> locks;
map<string, string>::reverse_iterator iter_r;

string userans = string();
string solve(string);

inline const string getHash(const string &key) {
    
    uint64_t hash = 0xcbf29ce484222325;
    uint64_t prime = 0x100000001b3;
    
    for(int i = 0; i < key.size(); ++i) {
        uint8_t value = key[i];
        hash = hash ^ value;
        hash *= prime;
    }
    string str;
    do {
        int digit = hash % 10;
        str = std::to_string(digit) + str;
        hash = (hash - digit) / 10;
    } while (hash != 0);
    
    return str;
}

long long int encrypt(long long int number){
    return (number >> 23) ^ 2333;
}

class LockSolver{
public:
	void run(string (*)(string));
    string getPassword(string);
private:
    string (*userfunc)(string);
};

void LockSolver::run(string (*func)(string)){
    hidden
    int count = 0;
    this->userfunc = func;
	string sampletc = userfunc("12345");
    if( sampletc != "2353" ){
        cout << "Your function returns " << sampletc << " instead of 2353, consider checking your solve function." << endl;
        return;
    }
    for(iter_r = locks.rbegin(); iter_r != locks.rend(); iter_r++){
        string testcase = iter_r->first;
        string anshash  = iter_r->second;
        string result = userfunc(testcase);
        if (anshash != "" && getHash(result) != anshash){
            count++;
            cout << "Failed to open lock #" + to_string(count) + ", your solution is probably wrong." << endl;
            exit(EXIT_FAILURE);
        }
        userans.append(getHash(result));
    }
}

string LockSolver::getPassword(string userID){
    string answer = userans + userfunc(userID);
    return getHash(answer);
}

// user code space
string solve(string token){
}

int main(){
    // your code in main

    return 0;
}