Created
July 30, 2012 17:07
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#include <iostream> | |
#include <string> | |
#include <numeric> | |
static const std::string number = "73167176531330624919225119674426574742355349194934" | |
"96983520312774506326239578318016984801869478851843" | |
"85861560789112949495459501737958331952853208805511" | |
"12540698747158523863050715693290963295227443043557" | |
"66896648950445244523161731856403098711121722383113" | |
"62229893423380308135336276614282806444486645238749" | |
"30358907296290491560440772390713810515859307960866" | |
"70172427121883998797908792274921901699720888093776" | |
"65727333001053367881220235421809751254540594752243" | |
"52584907711670556013604839586446706324415722155397" | |
"53697817977846174064955149290862569321978468622482" | |
"83972241375657056057490261407972968652414535100474" | |
"82166370484403199890008895243450658541227588666881" | |
"16427171479924442928230863465674813919123162824586" | |
"17866458359124566529476545682848912883142607690042" | |
"24219022671055626321111109370544217506941658960408" | |
"07198403850962455444362981230987879927244284909188" | |
"84580156166097919133875499200524063689912560717606" | |
"05886116467109405077541002256983155200055935729725" | |
"71636269561882670428252483600823257530420752963450"; | |
template<class Iter> | |
int calc(Iter first, Iter last) | |
{ | |
typedef typename Iter::value_type value_t; | |
return std::accumulate(first, last, 1, | |
[](int res, value_t v){ | |
return res * (v-'0'); | |
}); | |
} | |
int main() | |
{ | |
int max_value = 0; | |
for( auto first = number.begin(), last = number.begin()+5; | |
last != number.end(); | |
++first, ++last){ | |
max_value = std::max(max_value, calc(first, last)); | |
} | |
std::cout << max_value << std::endl; | |
return 0; | |
} |
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