Compilare: main.cpp: In function 'bool operator<(tip, tip)': main.cpp:12:30: warning: suggest parentheses around '&&' within '||' [-Wparentheses] return a.x<b.x || a.x==b.x && a.y<b.y; ~~~~~~~~~^~~~~~~~~~ main.cpp: In function 'bool cup(int)': main.cpp:73:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[k].size();i++) ~^~~~~~~~~~~~ main.cpp:83:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[k].size();i++) ~^~~~~~~~~~~~