foo.cc: In function 'double cal1(int, int)':
foo.cc:70:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=16;i>=0;i--)
     ^~~
foo.cc:76:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  if(t2==0)return inf;
  ^~
foo.cc: In function 'void solve1()':
foo.cc:102:23: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
     printf("%d\n",ans);
                       ^

自豪的采用jd5进行评测(github.com/masnn/jd5)