answer.code:22:39: warning: bad option ‘-fwhole-program’ to pragma ‘optimize’ [-Wpragmas]
   22 | #pragma GCC optimize("-fwhole-program")
      |                                       ^
answer.code:29:41: warning: bad option ‘-fstrict-overflow’ to pragma ‘optimize’ [-Wpragmas]
   29 | #pragma GCC optimize("-fstrict-overflow")
      |                                         ^
answer.code:31:41: warning: bad option ‘-fcse-skip-blocks’ to pragma ‘optimize’ [-Wpragmas]
   31 | #pragma GCC optimize("-fcse-skip-blocks")
      |                                         ^
answer.code:45:51: warning: bad option ‘-funsafe-loop-optimizations’ to pragma ‘optimize’ [-Wpragmas]
   45 | #pragma GCC optimize("-funsafe-loop-optimizations")
      |                                                   ^
answer.code:54:16: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   54 | inline char gc()
      |                ^
answer.code:54:16: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:54:16: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:54:16: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:59:43: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   59 | template<typename T> inline void read(T &x)
      |                                           ^
answer.code:59:43: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:59:43: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:59:43: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:66:65: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   66 | template<typename T,typename ...O> inline void read(T &x,O &...o) {read(x),read(o...);}
      |                                                                 ^
answer.code:66:65: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:66:65: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:66:65: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:67:43: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   67 | template<typename T> inline void print(T x)
      |                                           ^
answer.code:67:43: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:67:43: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:67:43: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:75:64: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   75 | template<typename T,typename ...O> inline void print(T x,O ...o) {print(x),putchar(' '),print(o...);}
      |                                                                ^
answer.code:75:64: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:75:64: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:75:64: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:87:18: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   87 | inline void init()
      |                  ^
answer.code:87:18: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:87:18: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:87:18: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:110:29: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
  110 | inline void add1(int x,int k)
      |                             ^
answer.code:110:29: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:110:29: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:110:29: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:119:29: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
  119 | inline void add2(int x,int k)
      |                             ^
answer.code:119:29: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:119:29: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:119:29: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:128:14: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
  128 | int dfs(int x)
      |              ^
answer.code:128:14: warning: bad option ...