OpenJudge 2973 Skew数

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int i,s,t,sum;
 5     char skew[32];
 6     while(scanf("%s",skew))
 7     {
 8         for(sum=t=i=0;skew[i];i++)
 9         {
10             sum=(sum<<1)+skew[i]-'0';
11             t+=skew[i]-'0';
12         }
13         sum=(sum<<1)-t;
14         if(!sum)  break;
15         printf("%d\n",sum);
16     }
17     return 0;
18 }