View Compilation Error

0_0_22752100_13680.cpp: In function 'int main()':
0_0_22752100_13680.cpp:56:34: error: unable to find numeric literal operator 'operator""Ll'
   for(int i=0;i<n;i++) f[i][0] = 1Ll*(1LL*i*i+1)%n;
                                  ^
0_0_22752100_13680.cpp:56:34: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes