lanterna.cpp: In function 'int solve(int)': lanterna.cpp:57: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp:57: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp:64: warning: comparison between signed and unsigned integer expressions lanterna.cpp:75: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp:75: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp: In function 'int main()': lanterna.cpp:107: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp:107: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp:108: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp:108: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x lanterna.cpp:93: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result lanterna.cpp:93: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result