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- #include <iostream>
- using namespace std;
- int main()
- {
- unsigned long long int n;
- char s[65];
- cin>>n;
- int L=0;
- while(n)
- s[L++]='0'+n%2,n/=2;
- s[L]='\0';
- int pozf;
- for(int i=L-1;i>=0;--i)
- if(s[i]=='1')
- {
- pozf=i;
- break;
- }
- int pozi;
- for(int i=0;i<L;++i)
- if(s[i]=='1')
- {
- pozi=i;
- break;
- }
- cout<<pozf-pozi+1;
- return 0;
- }
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