foo.cc: In function 'void solve()':
foo.cc:48:11: warning: statement has no effect [-Wunused-value]
 cout.fixed;
           ^
foo.cc:27:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d%d",&l,&k);
 ~~~~~^~~~~~~~~~~~~~
foo.cc:30:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d",&temp);
 ~~~~~^~~~~~~~~~~~
foo.cc:35:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d",&temp);
 ~~~~~^~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:55:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d",&T);
 ~~~~~^~~~~~~~~

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