Compilare: main.cpp: In lambda function: main.cpp:55:34: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 55 | return (a.x < b.x || a.x == b.x & a.y < b.y); | ~~~~^~~~~~ main.cpp: In lambda function: main.cpp:77:31: warning: self-comparison always evaluates to true [-Wtautological-compare] 77 | (a.x * b.y == a.x * b.y && a.x < b.x); | ~~~~~~~~~ ^~ ~~~~~~~~~