In file included from /usr/include/c++/5/unordered_map:35:0,
from r.cpp:18:
/usr/include/c++/5/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
#error This file requires compiler and library support \
^
r.cpp:22:0: warning: ignoring #pragma warning [-Wunknown-pragmas]
#pragma warning(disable:4996)
^
r.cpp:23:0: warning: ignoring #pragma comment [-Wunknown-pragmas]
#pragma comment(linker, "/STACK:336777216")
^
r.cpp:35:9: error: 'tuple' does not name a type
typedef tuple<int, int, int> t3;
^
r.cpp:49:10: warning: 'PI' defined but not used [-Wunused-variable]
const db PI = acos(-1);
^