UVa 575 - Skew Binary

题目链接：UVa 575 - Skew Binary

水。。。

#include <iostream>
#include <cstring>
#include <cmath>
using namespace std;

char s[100];
int res;
int main()
{
    while(cin>>s,strcmp(s,"0"))
    {
        res = 0;
        int len = strlen(s);
        int k = 0;
        for(int i = len - 1;i  >= 0;i--)
        {
            int temp = s[i] - '0';
            res += temp * (pow(2,k+1) - 1);
            k++;
        }
        cout<<res<<endl;
    }
    return 0;
}