Borderou de evaluare (job #311462)

Compilare: user.cpp: In function ‘bool f3(P, P, P)’: user.cpp:53:66: warning: suggest parentheses around comparison in operand of ‘==’ [-Wparentheses] user.cpp:53:130: warning: suggest parentheses around comparison in operand of ‘==’ [-Wparentheses] user.cpp: In function ‘bool f6(P, std::vector<P>)’: user.cpp:81:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:85:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘std::vector<P> f7(std::vector<P>, std::vector<P>)’: user.cpp:93:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:96:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:112:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:113:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:171:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:125:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:126:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:128:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:131:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:124:5: warning: ‘last’ may be used uninitialized in this function [-Wuninitialized]