统计 - RQNOJ

编译失败，当前编译语言：C++

详情如下

In file included from /usr/include/c++/4.8.2/unordered_map:35:0,
                 from /tmp/1252501.cpp:2:
/usr/include/c++/4.8.2/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support for the \
  ^
/tmp/1252501.cpp: In function ‘long long int add(int, int)’:
/tmp/1252501.cpp:29:8: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11 [enabled by default]
     ll ret{};
        ^
/tmp/1252501.cpp:29:12: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11 [enabled by default]
     ll ret{};
            ^
/tmp/1252501.cpp: In function ‘int main()’:
/tmp/1252501.cpp:50:29: error: ‘to_string’ was not declared in this scope
         string s=to_string(n);
                             ^
/tmp/1252501.cpp:56:24: error: ‘stoi’ was not declared in this scope
         ll rev = stoi(s);
                        ^