View Compilation Error

0_0_30465171_22940.cpp:4:18: error: unable to find numeric literal operator 'operator""w3'
 const int maxn = 1w3 + 10;
                  ^
0_0_30465171_22940.cpp:4:18: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_30465171_22940.cpp:5:11: error: size of array 'f' is not an integral constant-expression
 int f[maxn], g[maxn];
           ^
0_0_30465171_22940.cpp:5:20: error: size of array 'g' is not an integral constant-expression
 int f[maxn], g[maxn];
                    ^