zoj 2239 In Danger

#include <stdio.h>int main(){ int n; char c,i; while(c = getchar()) {  c=='0'?n=0:n=(c-'0')*10;  c = getchar();  n += c-'0';  getchar();  c = getchar();  i = c - '0';  c = getchar();  while(i--)   n *= 10;  if(n==0) break;  for(i=31;i>0;--i)  {   if((n&(1<<i))>=1)    break;  }  n &= ~(1<<i);  n = n<<1;  printf("%dn",n+1); } return 0;}