Borderou de evaluare (job #694255)

Compilare: main.cpp: In function 'void solve()': main.cpp:6:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 6 | #define fr(n) for(ll i=0;i<n;++i) | ^ main.cpp:122:5: note: in expansion of macro 'fr' 122 | fr(ans.size()){ | ^~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:24:30: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 24 | fread(buff, 1, 4096, fin); | ~~~~~^~~~~~~~~~~~~~~~~~~~