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  1. #include <string>
  2. #include <iostream>
  3. #include <stdlib.h> // atol ASCII to Integer function
  4.  
  5.  
  6. int main(){
  7.  
  8. std::string digits =    "73167176531330624919225119674426574742355349194934";
  9.             digits +=   "96983520312774506326239578318016984801869478851843";
  10.             digits +=   "85861560789112949495459501737958331952853208805511";
  11.             digits +=   "12540698747158523863050715693290963295227443043557";
  12.             digits +=   "66896648950445244523161731856403098711121722383113";
  13.             digits +=   "62229893423380308135336276614282806444486645238749";
  14.             digits +=   "30358907296290491560440772390713810515859307960866";
  15.             digits +=   "70172427121883998797908792274921901699720888093776";
  16.             digits +=   "65727333001053367881220235421809751254540594752243";
  17.             digits +=   "52584907711670556013604839586446706324415722155397";
  18.             digits +=   "53697817977846174064955149290862569321978468622482";
  19.             digits +=   "83972241375657056057490261407972968652414535100474";
  20.             digits +=   "82166370484403199890008895243450658541227588666881";
  21.             digits +=   "16427171479924442928230863465674813919123162824586";
  22.             digits +=   "17866458359124566529476545682848912883142607690042";
  23.             digits +=   "24219022671055626321111109370544217506941658960408";
  24.             digits +=   "07198403850962455444362981230987879927244284909188";
  25.             digits +=   "84580156166097919133875499200524063689912560717606";
  26.             digits +=   "05886116467109405077541002256983155200055935729725";
  27.             digits +=   "71636269561882670428252483600823257530420752963450";
  28.  
  29.     long long product = 1;
  30.     long long temp = 1;
  31.  
  32.     for(int i = 12; i < digits.length(); i++){
  33.  
  34.         for(int j = 0; j<13; j++){
  35.  
  36.             temp = temp*atoi(digits.substr(i-j,1).c_str());
  37.         }
  38.  
  39.         if(temp > product){
  40.             product = temp;
  41.             std::cout << "index: " << (i-12) << " Product: " << product << "\n";
  42.         }
  43.  
  44.         temp = 1;
  45.     }
  46.  
  47.     return 0;
  48. }
Success #stdin #stdout 0s 3432KB
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stdin
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Standard input is empty
stdout
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index: 0 Product: 5000940
index: 16 Product: 9797760
index: 19 Product: 13063680
index: 21 Product: 25401600
index: 22 Product: 50803200
index: 23 Product: 71124480
index: 24 Product: 284497920
index: 25 Product: 568995840
index: 40 Product: 1020366720
index: 41 Product: 1632586752
index: 43 Product: 2040733440
index: 88 Product: 2972712960
index: 195 Product: 6270566400
index: 196 Product: 14108774400
index: 197 Product: 23514624000
https://ideone.com/ZtmROO
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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