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back to boardJust use long arithmetics and calculate 36*pow(55,k-1); How did u get the formula What are the libraries and functions u use for long arithmetic in c++. There are no such libraries! You must write long arithmetics by yourself ;) Thank finaly something extra ordinary good.
Thanks allot. I was searching for this for so long time. Thanks, thanks, thanks... This program explain how get 36 and 55.
#include <iostream>
using namespace std;
__int64 s( __int64 x ){
__int64 ans = 0;
while( x ){
ans += x % 10;
x /= 10;
}
return ans;
}
int main(){
__int64 kol = 0;
for( __int64 i = 0; i <= 9; ++i ){
for( __int64 j = 0; j <= 9; ++j ){
if( s(i+j) == s(i)+s(j) && i+j<=9 ){
cout << " " << i << " " << j << " s=" << s(i+j) << endl;
++kol;
}
}
cout << "-------------------------" << endl;
}
cout
<< "kol = "
<< kol << endl;
kol = 0;
for( __int64 i = 1; i <= 9; ++i ){// последний разряд без нулей т.к. число must be без ведущих нулей
for( __int64 j = 1; j <= 9; ++j ){
if( s(i+j) == s(i)+s(j) && i+j<=9 ){
cout << " " << i << " " << j << " s=" << s(i+j) << endl;
++kol;
}
}
cout << "-------------------------" << endl;
}
cout
<< "kol = "
<< kol << endl;
return 0;
}
Edited by author 23.11.2011 03:11
Edited by author 23.11.2011 03:12
Edited by author 23.11.2011 03:12 |
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