Borderou de evaluare (job #567198)

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:104:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:108:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:130:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:132:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:134:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:140:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:141:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:143:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:150:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:153:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:156:3: warning: ‘ch_2_puncte’ may be used uninitialized in this function [-Wuninitialized]