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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. long long int row(long long int node)
  5. {
  6.     long long int i=1,r=0;
  7.     while(i<=node)
  8.     {
  9.         i*=2;
  10.         r++;
  11.     }
  12.     return r;
  13. }
  14. int main()
  15. {
  16.     int q;
  17.     long long int a,b,temp,row_a,row_b,c_a,c_b,total_nodes,N;
  18.     char in[5];
  19.     scanf("%d\n",&q);
  20.     int inode=0; //initial node = 0(black), 1(white)
  21.     while(q--)
  22.     {
  23.         scanf("%s",in);
  24.         if(in[1]=='i')
  25.         {
  26.             if(inode)
  27.                 inode=0;
  28.             else
  29.                 inode=1;
  30.         }
  31.         else
  32.         {
  33.             scanf("%lld %lld",&a,&b);
  34.             if(a<b)
  35.             {
  36.                 temp=a;
  37.                 a=b;
  38.                 b=temp;
  39.             }
  40.             row_a=row(a)%2; //if 1, then same color as i_node; if 0, then opposite color of i_node;
  41.             row_b=row(b)%2;
  42.             c_a=c_b=0;
  43.             while(row(a)>row(b))
  44.             {
  45.                 a=a/2;
  46.                 c_a++;
  47.             }
  48.             while(a!=b)
  49.             {
  50.                 a=a/2;
  51.                 c_a++;
  52.                 b=b/2;
  53.                 c_b++;
  54.             }
  55.             total_nodes=c_a+c_b+1;
  56. /*          row_a=row(a)%2; //if 1, then same color as i_node; if 0, then opposite color of i_node;
  57.             row_b=row(b)%2;*/
  58.             if(in[1]=='b')
  59.             {
  60.                 if(!inode)//black
  61.                 {
  62.                     if(row_a)//black
  63.                     {
  64.                         N=(total_nodes/2)+(total_nodes%2);
  65.                     }
  66.                     else //white
  67.                     {
  68.                         N=(total_nodes/2);
  69.                     }
  70.                 }
  71.                 else//i_node is white
  72.                 {
  73.                     if(row_a)//white
  74.                     {
  75.                         N=(total_nodes/2);
  76.                     }
  77.                     else //black
  78.                     {
  79.                         N=(total_nodes/2)+(total_nodes%2);
  80.                     }
  81.                 }
  82.             }
  83.             else if(in[1]='r')
  84.             {
  85.                 if(!inode)//black
  86.                 {
  87.                     if(row_a)//black
  88.                     {
  89.                         N=(total_nodes/2);
  90.                     }
  91.                     else //white
  92.                     {
  93.                         N=(total_nodes/2)+(total_nodes%2);
  94.                     }
  95.                 }
  96.                 else//i_node is white
  97.                 {
  98.                     if(row_a)//white
  99.                     {
  100.                         N=(total_nodes/2)+(total_nodes%2);
  101.                     }
  102.                     else //black
  103.                     {
  104.                         N=(total_nodes/2);
  105.                     }
  106.                 }
  107.             }
  108.             printf("%lld\n\n",N);
  109.         }
  110.  
  111.     }
  112.     return 0;
  113. }
  114.  
Success #stdin #stdout 0s 3300KB
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https://ideone.com/APdHId
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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