View Compilation Error

0_0_28417588_7284.cpp: In function 'int main()':
0_0_28417588_7284.cpp:39:12: error: unable to find numeric literal operator 'operator""n'
   if(solve[2n]||solve[2n-1])
            ^
0_0_28417588_7284.cpp:39:12: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_28417588_7284.cpp:39:23: error: unable to find numeric literal operator 'operator""n'
   if(solve[2n]||solve[2n-1])
                       ^
0_0_28417588_7284.cpp:39:23: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes