Compiler output
prog.cpp: In function ‘void solve(std::string)’:
prog.cpp:52:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
prog.cpp:55:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
prog.cpp:73:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
prog.cpp:82:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
prog.cpp:84:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
