View Compilation Error

0_0_24897359_21453.cpp: In function 'int main()':
0_0_24897359_21453.cpp:13:34: error: 'memset' was not declared in this scope
         memset(f1, -1, sizeof(f1));
                                  ^
0_0_24897359_21453.cpp:15:22: error: 'i' was not declared in this scope
         for(int i=0; i<n; i++){
                      ^
0_0_24897359_21453.cpp:45:27: error: unable to find numeric literal operator 'operator""n'
            for(int j=0; j<2n; j++)
                           ^
0_0_24897359_21453.cpp:45:27: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_24897359_21453.cpp:48:17: error: 'FINISH' was not declared in this scope
         cout << FINISH << endl;
                 ^