Compilare: main.cpp: In function 'int main()': main.cpp:82:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<str>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for (long long j = 0; j < plan.size(); j++) | ~~^~~~~~~~~~~~~ main.cpp:85:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<str>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | if (k == plan.size()) | ~~^~~~~~~~~~~~~~ main.cpp:27:24: warning: 'auxy' may be used uninitialized in this function [-Wmaybe-uninitialized] 27 | return (x.x * (y.y - z.y) + y.x * (z.y - x.y) + z.x * (x.y - y.y)); | ~~~~~^~~~~~ main.cpp:65:143: note: 'auxy' was declared here 65 | long double mx = (v[i].x + v[i + 1].x) / 2, my = (v[i].y + v[i + 1].y) / 2, dx = v[i].x - v[i + 1].x, dy = v[i].y - v[i + 1].y, auxx, auxy; | ^~~~ main.cpp:27:37: warning: 'auxx' may be used uninitialized in this function [-Wmaybe-uninitialized] 27 | return (x.x * (y.y - z.y) + y.x * (z.y - x.y) + z.x * (x.y - y.y)); | ~~~~^~~~~~~~~~~~~ main.cpp:65:137: note: 'auxx' was declared here 65 | long double mx = (v[i].x + v[i + 1].x) / 2, my = (v[i].y + v[i + 1].y) / 2, dx = v[i].x - v[i + 1].x, dy = v[i].y - v[i + 1].y, auxx, auxy; | ^~~~