UVA Problem 575 – Skew Binary Solution

Problem Solving, UVa

#include<bits/stdc++.h>

using namespace std;

int main()

{

    char st[100];

   

  long int a,i,j,ans,sum;

 

  while(scanf("%s",st))

  {

      sum=0;

      j=strlen(st);

      for(i=0;i<j;i++)

      {

          a=st[i]-'0';

          ans=a*(pow(2,j-i)-1);

          sum+=ans;

      }

      if(sum==0)    break;

      cout<<sum<<endl;

  }

  return 0;

}

 

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