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  1. #include<stdio.h>
  2. int base;
  3. char f;
  4. int a[10];
  5. int b[10][10];
  6. int c[10];
  7. int res;
  8. void process(){
  9.     int me=a[f-'1'];
  10.     for(int i=0;i<9;i++){
  11.         for(int j=0;j<9;j++){
  12.             int dist=a[i]-a[j];
  13.             if(dist<0)dist=-dist;
  14.             me+=b[i][j]*dist;
  15.         }
  16.     }
  17.     if(res<0||res>me)res=me;
  18. }
  19. void dfs(int dep){
  20.     if(dep==9){
  21.         process();
  22.         return;
  23.     }
  24.     for(int i=0;i<9;i++){
  25.         if(!c[i])
  26.         {
  27.             c[i]=1;
  28.             a[dep]=i;
  29.             dfs(dep+1);
  30.             c[i]=0;
  31.         }
  32.     }
  33. }
  34. int main(){
  35.     res=-1;
  36.     char c='0';
  37.     while(1){
  38.         char d=getchar();
  39.         if(d<0)break;
  40.         if(d<'1'||d>'9')continue;
  41.         if(c=='0'){
  42.             f=d;
  43.         }
  44.         else{
  45.             b[c-'1'][d-'1']++;
  46.         }
  47.         base++;
  48.         c=d;
  49.     }
  50.     dfs(0);
  51.     printf("%d",res+base);
  52. }
Success #stdin #stdout 0.07s 5320KB
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https://ideone.com/A9N6Z3
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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