Compilare: user.cpp: In function ‘bool cmp(punct, punct)’: user.cpp:29:36: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] return a.y < b.y || a.y == b.y && a.x < b.x; ^ user.cpp: In function ‘int main()’: user.cpp:98:65: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] printf("%llf %llf\n", plan[stiva[i]].x, plan[stiva[i]].y); ^ user.cpp:98:65: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] user.cpp:40:12: warning: unused variable ‘cnt’ [-Wunused-variable] int i, cnt; ^