Compilare: main.cpp: In function 'int main()': main.cpp:66:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < verticalSegments.size() - 1; ++i) { ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:67:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j < verticalSegments.size(); ++j) { ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:70:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < horizontalSegments.size(); ++k) { ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~