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:57:40: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   57 | template<class T> inline void read(T &x) {
      |                                        ^
answer.code:57:40: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:57:40: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:57:40: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:63:70: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   63 | template<class T, class... Args> inline void read(T &x, Args&... args) { read(x), read(args...); }
      |                                                                      ^
answer.code:63:70: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:63:70: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:63:70: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:64:42: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   64 | template<class T> inline void readch(T &x) { char ch = gc(); for (; ch!='A'&&ch!='C'&&ch!='?'; ch = gc()); x = ch; }
      |                                          ^
answer.code:64:42: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:64:42: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:64:42: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:67:56: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   67 | template<class T> inline void write(T x, char ch = '\n') {
      |                                                        ^
answer.code:67:56: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:67:56: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:67:56: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:74:69: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   74 | template<class T, class... Args> inline void write(T x, Args... args) { write(x, ' '), write(args...); }
      |                                                                     ^
answer.code:74:69: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:74:69: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:74:69: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:82:20: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   82 | int LCA(int u,int v)
      |                    ^
answer.code:82:20: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:82:20: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:82:20: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:94:21: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   94 | void ADD(int x,int y)
      |                     ^
answer.code:94:21: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:94:21: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:94:21: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:99:17: warning: bad option ‘-fwhole-program’ to attribute ‘optimize’ [-Wattributes]
   99 | void add(int&top)
      |                 ^
answer.code:99:17: warning: bad option ‘-fstrict-overflow’ to attribute ‘optimize’ [-Wattributes]
answer.code:99:17: warning: bad option ‘-fcse-skip-blocks’ to attribute ‘optimize’ [-Wattributes]
answer.code:99:17: warning: bad option ‘-funsafe-loop-optimizations’ to attribute ‘optimize’ [-Wattributes]
answer.code:105:19: warning: bad option ‘-fwhole-prog...