View Compilation Error

0_0_20807318_1418.cpp: In function 'int main()':
0_0_20807318_1418.cpp:4:1: error: 'cin' was not declared in this scope
 cin>>N;
 ^
0_0_20807318_1418.cpp:10:17: error: unable to find numeric literal operator 'operator""O'
 if(CM>59){CM=CM-6O;AH=AH+1;}
                 ^
0_0_20807318_1418.cpp:10:17: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_20807318_1418.cpp:13:1: error: 'count' was not declared in this scope
 count<<CH<<CM<<CS;
 ^