View Compilation Error

0_0_33521065_9152.cpp: In function 'bool solve1(unsigned int, unsigned int, unsigned int)':
0_0_33521065_9152.cpp:93:52: error: 'sg1' was not declared in this scope
  for(int i=1;a>=FIBO[i];i++) ret&=sg1(a-FIBO[i],b,c);
                                                    ^
0_0_33521065_9152.cpp:96:24: error: 'sg1' was not declared in this scope
  ret&=sg1(a,b-FIBO[i],c);
                        ^
0_0_33521065_9152.cpp:98:52: error: 'sg1' was not declared in this scope
  for(int i=1;c>=FIBO[i];i++) ret&=sg1(a,b,c-FIBO[i]);
                                                    ^