Compilare: main.cpp: In function 'void find_intersections()': main.cpp:69:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<p1.size() - 1;++i) ~^~~~~~~~~~~~~~ main.cpp:71:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<p2.size() - 1;++j) ~^~~~~~~~~~~~~~ main.cpp: In function 'void find_points_inside()': main.cpp:90:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < p1.size() - 1;++i) ~~^~~~~~~~~~~~~~~ main.cpp:94:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j < p2.size() - 1;++j) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void Sort()': main.cpp:122:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<p.size();++i) ~^~~~~~~~~ main.cpp: In function 'void convex_hull()': main.cpp:137:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<p.size();++i) ~^~~~~~~~~