foo.cc: In function 'int main()':
foo.cc:19:29: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   19 |   for(int k=i+1;k<j;k++)if(k-i&1)f[i][j]=max(f[i][j],f[i][k]+f[k+1][j]);
      |                            ~^~
foo.cc:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |  scanf("%d %d", &n, &k);
      |  ~~~~~^~~~~~~~~~~~~~~~~
foo.cc:12:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |  for(int i=1;i<=n;i++)scanf("%d %d",a+i,b+i);
      |                       ~~~~~^~~~~~~~~~~~~~~~~

Found 10 testcases.
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