View Compilation Error

0_0_35857455_7483.cpp: In function 'int main()':
0_0_35857455_7483.cpp:30:36: error: unable to find numeric literal operator 'operator""and'
  while(~scanf("%d%d",&a,&b)and a!=-1and b!=-1)
                                    ^
0_0_35857455_7483.cpp:30:36: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_35857455_7483.cpp:30:41: error: expected ')' before 'b'
  while(~scanf("%d%d",&a,&b)and a!=-1and b!=-1)
                                         ^
0_0_35857455_7483.cpp:30:46: error: expected ';' before ')' token
  while(~scanf("%d%d",&a,&b)and a!=-1and b!=-1)
                                              ^
0_0_35857455_7483.cpp:62:1: error: expected '}' at end of input
 }
 ^