Mã chấm: 256793

Main.cc: In function ‘int tinhsocatalan(int)’:
Main.cc:9:19: error: expected ‘;’ before ‘!’ token
     return s=(2*i)!/(i+1)!*i!;
                   ^
Main.cc:8:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
     for(i=1;i