submatrix.cpp: In function 'void pop_q(std::deque<std::pair<int, int>, std::allocator<std::pair<int, int> > >&, int, int)': submatrix.cpp:18: warning: suggest parentheses around '&&' within '||' submatrix.cpp: In function 'int main()': submatrix.cpp:48: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x submatrix.cpp:48: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x submatrix.cpp:53: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x submatrix.cpp:53: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x submatrix.cpp:30: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result submatrix.cpp:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result