Borderou de evaluare (job #567196)

Compilare: user.cpp: In function ‘bool solve(std::string)’: user.cpp:23:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:46:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:61:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:66:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:73:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:88:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:106:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:128:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:130:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:132:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:138:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:139:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:141:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:148:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:151:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:102:5: warning: ‘numar’ may be used uninitialized in this function [-Wuninitialized] user.cpp:154:3: warning: ‘ch_2_puncte’ may be used uninitialized in this function [-Wuninitialized]