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  1. #include <iostream>
  2. #include <stdlib.h>
  3. #include <cstdlib>
  4. #include <climits>
  5. #include <cmath>
  6.  
  7. //This doesn't actually seem to work when the starting bid isn't 1.
  8. //TODO: Find out why!!
  9.  
  10. unsigned long long moneyOnHand = 300; //Default start with cool million!
  11. unsigned long long moneyOnHandMax = moneyOnHand;
  12. unsigned long long moneyOnHandMaxRound = 0;
  13.  
  14. unsigned long long moneyOnHandLastRound = moneyOnHand;
  15.  
  16. unsigned long long totalGamesPlayed = 0;
  17.  
  18.  
  19. unsigned long long  martingale(unsigned long long bidAmount);
  20. void logRound(unsigned long long roundNum, unsigned long long money);
  21.  
  22. int main(int argc, char* argv[])
  23. {
  24.         srand (time(NULL));
  25.         int initialBid = 1;
  26.         if ( argc == 2 )
  27.         {
  28.                 moneyOnHand = atoi(argv[1]);
  29.         }
  30.         else if ( argc == 2)
  31.         {
  32.                 moneyOnHand = atoi(argv[1]);
  33.                 initialBid  = atoi(argv[2]);
  34.         }
  35.         moneyOnHandMax = moneyOnHand;
  36.  
  37.  
  38.         unsigned long long numRounds=0;
  39.         //Play until I bust.... Or overflow a unsigned long long at $18,446,744,073,709,551,615 (2^64-1)
  40.         while ( ( moneyOnHand > 0 ) && ( moneyOnHand >= initialBid ) )
  41.         {
  42.                 unsigned long long bidAmount = martingale(initialBid);
  43.                 numRounds++;
  44.                 if ( moneyOnHand > moneyOnHandMax )
  45.                 {
  46.                         moneyOnHandMax = moneyOnHand;
  47.                         moneyOnHandMaxRound = numRounds;
  48.                 }
  49.  
  50.                 //This is just a lazy way to show mostly the early and late rounds with random bits inbetween and at times we couldn't make the bid.
  51.                 //Printing to stdout is slow.
  52.                 bool tookALoss = moneyOnHand < moneyOnHandLastRound;
  53.                 if      ( moneyOnHand == 0 || numRounds % moneyOnHand == 0 || moneyOnHand % numRounds == 0 || tookALoss )
  54.                 {
  55.                         //If we just took a loss, lets print the previous one too if we haven't already.
  56.                         bool printedLastRound = (numRounds - 1) % moneyOnHandLastRound == 0 || (moneyOnHandLastRound % numRounds - 1) == 0;
  57.                         if      ( ! printedLastRound && tookALoss )
  58.                         {
  59.                                 logRound( numRounds - 1, moneyOnHandLastRound );
  60.                                 std::cout << "Oops! The bid is $" << bidAmount
  61.                                         << " but you only have $" << moneyOnHand
  62.                                         << " on hand because you lost $" << bidAmount - 1
  63.                                         << " after losing " << (unsigned long long)log2l((long double)bidAmount/initialBid)
  64.                                         << " games in a row." << std::endl;
  65.  
  66.                         }
  67.                         logRound( numRounds, moneyOnHand );
  68.                 }
  69.  
  70.                 if ( moneyOnHand == ULLONG_MAX )
  71.                 {
  72.                         std::cout << "Oops! We broke the bank! YOLO!! Let's buy all the yachts!"  << std::endl;
  73.                         return 0;
  74.                 }
  75.                 moneyOnHandLastRound = moneyOnHand;
  76.         }
  77.         std::cout << "Whelp, you have played " << totalGamesPlayed << " games, and you are broke. Should have stopped on round " << moneyOnHandMaxRound << " when you had $" << moneyOnHandMax <<  ". Hope you didn't bet the yacht. Better luck next time!" << std::endl;
  78.         return 0;
  79. }
  80.  
  81. void logRound(unsigned long long roundNum, unsigned long long money)
  82. {
  83.         std::cout << "Round " << roundNum << ": Money = $" << money << std::endl;
  84. }
  85.  
  86. unsigned long long martingale(unsigned long long bidAmount)
  87. {
  88.         if ( moneyOnHand >= bidAmount )
  89.         {
  90.                 if ( rand() % 2 == 0 )
  91.                 {
  92.                         moneyOnHand += bidAmount;
  93.                 }
  94.                 else
  95.                 {
  96.                         moneyOnHand -= bidAmount;
  97.                         bidAmount = martingale(bidAmount * 2);
  98.                 }
  99.                 totalGamesPlayed++;
  100.         }
  101.         return bidAmount;
  102. }
  103.  
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
300
stdout 
Round 1: Money = $301
Round 2: Money = $302
Round 3: Money = $303
Round 4: Money = $304
Round 5: Money = $305
Round 6: Money = $306
Round 10: Money = $310
Round 12: Money = $312
Round 15: Money = $315
Round 20: Money = $320
Round 25: Money = $325
Round 30: Money = $330
Round 50: Money = $350
Round 60: Money = $360
Round 75: Money = $375
Round 100: Money = $400
Round 150: Money = $450
Round 271: Money = $571
Oops! The bid is $512 but you only have $60 on hand because you lost $511 after losing 9 games in a row.
Round 272: Money = $60
Round 275: Money = $63
Oops! The bid is $64 but you only have $0 on hand because you lost $63 after losing 6 games in a row.
Round 276: Money = $0
Whelp, you have played 540 games, and you are broke. Should have stopped on round 271 when you had $571. Hope you didn't bet the yacht. Better luck next time!
https://ideone.com/APdWm9
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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