foo.cc:48: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   48 | #pragma G++ optimize(1)
      | 
foo.cc:49: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   49 | #pragma G++ optimize(2)
      | 
foo.cc:50: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   50 | #pragma G++ optimize(3)
      | 
foo.cc:51: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   51 | #pragma G++ optimize("Ofast")
      | 
foo.cc:52: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   52 | #pragma G++ optimize("inline")
      | 
foo.cc:53: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   53 | #pragma G++ optimize("-fgcse")
      | 
foo.cc:54: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   54 | #pragma G++ optimize("-fgcse-lm")
      | 
foo.cc:55: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   55 | #pragma G++ optimize("-fipa-sra")
      | 
foo.cc:56: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   56 | #pragma G++ optimize("-ftree-pre")
      | 
foo.cc:57: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   57 | #pragma G++ optimize("-ftree-vrp")
      | 
foo.cc:58: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   58 | #pragma G++ optimize("-fpeephole2")
      | 
foo.cc:59: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   59 | #pragma G++ optimize("-ffast-math")
      | 
foo.cc:60: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   60 | #pragma G++ optimize("-fsched-spec")
      | 
foo.cc:61: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   61 | #pragma G++ optimize("unroll-loops")
      | 
foo.cc:62: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   62 | #pragma G++ optimize("-falign-jumps")
      | 
foo.cc:63: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   63 | #pragma G++ optimize("-falign-loops")
      | 
foo.cc:64: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   64 | #pragma G++ optimize("-falign-labels")
      | 
foo.cc:65: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   65 | #pragma G++ optimize("-fdevirtualize")
      | 
foo.cc:66: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   66 | #pragma G++ optimize("-fcaller-saves")
      | 
foo.cc:67: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   67 | #pragma G++ optimize("-fcrossjumping")
      | 
foo.cc:68: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   68 | #pragma G++ optimize("-fthread-jumps")
      | 
foo.cc:69: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   69 | #pragma G++ optimize("-funroll-loops")
      | 
foo.cc:70: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   70 | #pragma G++ optimize("-fwhole-program")
      | 
foo.cc:71: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   71 | #pragma G++ optimize("-freorder-blocks")
      | 
foo.cc:72: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   72 | #pragma G++ optimize("-fschedule-insns")
      | 
foo.cc:73: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   73 | #pragma G++ optimize("inline-functions")
      | 
foo.cc:74: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   74 | #pragma G++ optimize("-ftree-tail-merge")
      | 
foo.cc:75: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   75 | #pragma G++ optimize("-fschedule-insns2")
      | 
foo.cc:76: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   76 | #pragma G++ optimize("-fstrict-aliasing")
      | 
foo.cc:77: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   77 | #pragma G++ optimize("-fstrict-overflow")
      | 
foo.cc:78: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   78 | #pragma G++ optimize("-falign-functions")
      | 
foo.cc:79: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   79 | #pragma G++ optimize("-fcse-skip-blocks")
      | 
foo.cc:80: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   80 | #pragma G++ optimize("-fcse-follow-jumps")
      | 
foo.cc:81: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   81 | #pragma G++ optimize("-fsched-interblock")
      | 
foo.cc:82: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   82 | #pragma G++ optimize("-fpartial-inlining")
      | 
foo.cc:83: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   83 | #pragma G++ optimize("no-stack-protector")
      | 
foo.cc:84: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   84 | #pragma G++ optimize("-freorder-functions")
      | 
foo.cc:85: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   85 | #pragma G++ optimize("-findirect-inlining")
      | 
foo.cc:86: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   86 | #pragma G++ optimize("-frerun-cse-after-loop")
      | 
foo.cc:87: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   87 | #pragma G++ optimize("inline-small-functions")
      | 
foo.cc:88: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   88 | #pragma G++ optimize("-finline-small-functions")
      | 
foo.cc:89: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   89 | #pragma G++ optimize("-ftree-switch-conversion")
      | 
foo.cc:90: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   90 | #pragma G++ optimize("-foptimize-sibling-calls")
      | 
foo.cc:91: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   91 | #pragma G++ optimize("-fexpensive-optimizations")
      | 
foo.cc:92: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   92 | #pragma G++ optimize("-funsafe-loop-optimizations")
      | 
foo.cc:93: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   93 | #pragma G++ optimize("inline-functions-called-once")
      | 
foo.cc:94: warning: ignoring '#pragma G ' [-Wunknown-pragmas]
   94 | #pragma G++ optimize("-fdelete-null-pointer-checks")
      | 
foo.cc:23:39: warning: bad option '-fwhole-program' to pragma 'optimize' [-Wpragmas]
   23 | #pragma GCC optimize("-fwhole-program")
      |                                       ^
foo.cc:30:41: warning: bad option '-fstrict-overflow' to pragma 'optimize' [-Wpragmas]
   30 | #pragma GCC optimize("-fstrict-overflow")
      |                                         ^
foo.cc:32:41: warning: bad option '-fcse-skip-blocks' to pragma 'optimize' [-Wpragmas]
   32 | #pragma GCC optimize("-fcse-skip-blocks")
      |                                         ^
foo.cc:45:51: warning: bad option '-funsafe-loop-optimizations' to pragma 'optimize' [-Wpragmas]
   45 | #pragma GCC optimize("-funsafe-loop-optimizations")
      |                                                   ^
foo.cc:99:33: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
   99 | void dfs(int t,int x,int y,int d){
      |                                 ^
foo.cc:99:33: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
foo.cc:99:33: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
foo.cc:99:33: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
foo.cc:138:10: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
  138 | int main()
      |          ^
foo.cc:138:10: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
foo.cc:138:10: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
foo.cc:138:10: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]

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