Compilare: main.cpp: In function 'void Solve()': main.cpp:61:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 5;i < p.size() - 1;++i) ~~^~~~~~~~~~~~~~ main.cpp:67:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j < r.size() - 1;++j) ~~^~~~~~~~~~~~~~ main.cpp: In function 'void calculate_area()': main.cpp:97:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < r.size() - 1;++i) ~~^~~~~~~~~~~~~~