Compilare: main.cpp: In member function 'bool compar::operator()(std::pair<int, int>, std::pair<int, int>)': main.cpp:18:54: warning: suggest parentheses around '&&' within '||' [-Wparentheses] return a.second > b.second || a.second == b.second && a.first > b.first; ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:30:9: warning: unused variable 'j' [-Wunused-variable] int i, j; ^ main.cpp: In function 'void djk()': main.cpp:54:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < g[act.first].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~~