Compiler output
prog.cpp: In function 'char* solve()':
prog.cpp:7:10: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
prog.cpp:9:10: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
prog.cpp:11:10: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
prog.cpp:13:10: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
prog.cpp:15:10: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
prog.cpp:17:10: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
prog.cpp:19:10: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
prog.cpp:20:9: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
