View Compilation Error

0_0_25726976_13784.cpp: In function 'void find_1(char*, int, int)':
0_0_25726976_13784.cpp:33:16: error: unable to find numeric literal operator 'operator""j'
   for(int j=i;+1j<n;j++)
                ^
0_0_25726976_13784.cpp:33:16: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes