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  1. #include <stdio.h>
  2.  
  3. int main(){
  4.   int test,i,n,k;
  5.   scanf("%d", &test);
  6.   while(test--){
  7.     scanf("%d %d",&n,&k);
  8.     if(k > (n/2))
  9.       printf("-1\n");
  10.     else if(k==1 && n==1)
  11.       printf("1\n");
  12.     else{
  13.       for(i=1; i<=k ;i++)
  14.     printf("%d ", 2*i);
  15.       printf("\n");
  16.     }
  17.   }
  18.   return 0;
  19. }
Success #stdin #stdout 0s 2856KB
comments (?)
stdin
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2
100 3
100 100
stdout
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2 4 6 
-1
https://ideone.com/S0iud1
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
secret

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