View Compilation Error

0_0_22960553_15627.cpp: In function 'int main()':
0_0_22960553_15627.cpp:110:68: error: unable to find numeric literal operator 'operator""n1'
                 if(sgn(len1[i] + len2[j] - Length(p[1] - p[3])) == 0n1[i], len2[i])
                                                                    ^
0_0_22960553_15627.cpp:110:68: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes