CPP   72
unsigned long zero
Guest on 11th February 2023 01:29:41 AM


  1. #include<stdio.h>
  2. #include<math.h>
  3. unsigned long zero(unsigned long numf,unsigned long numb,unsigned long ten,unsigned long num){
  4.     unsigned long temp,an=0;
  5.     if(numf<10){
  6.      /*printf("%d %d %d %d\n",numf,numb,ten,num);
  7.      printf("fnumb:%d\n",floor(numb/10)) ;*/
  8.      if(floor(numb/(ten))==0)
  9.             an=(numf-1)*ten+numb+1;
  10.         else
  11.             an=numf*ten;
  12.  
  13.      /*printf("an:%d\n",an);*/
  14.         return an;}
  15.     else{
  16.         /*printf("*-%d %d %d %d-*\n",numf,numb,ten,num);*/
  17.         if(floor(numb/ten)==0)
  18.             an=(numf-1)*ten+numb+1;
  19.         else
  20.             an=numf*ten;
  21.         numb+=(numf%10)*ten*10;
  22.         numf=(unsigned long)floor(num/(ten*100));
  23.         /*printf("*-an:%d\n",an);*/
  24.         return an+zero(numf,numb,ten*10,num);
  25.     }
  26.  
  27. }
  28.  
  29.  
  30. int main(){
  31.     unsigned long m,n;
  32.     /*while(1) {
  33.     scanf("%d",&n);
  34.     printf("zero(n):%d",zero((unsigned long)floor(n/10),n%10,1,n)); }*/
  35.     while(1){
  36.         scanf("%d %d",&m,&n);
  37.         /*m--;
  38.         if(m==0)printf("%d\n",zero((unsigned long)floor(n/10),n%10,1,n)+1);
  39.         else{printf("%d--\n",(unsigned long)floor(m/10));
  40.         printf("%d\n",zero((unsigned long)floor(n/10),n%10,1,n)-zero((unsigned long)floor(m/10),m%10,1,m));
  41.         }*/
  42.         m--;
  43.         printf("%d\n", zero(n/10, n%10, 1, n) - zero(m/10, m%10, 1, m));
  44.     }
  45.     return 0;
  46. }
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