Compilare: main.cpp: In function 'int main()': main.cpp:90:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:121:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < events.size(); j++) ~~^~~~~~~~~~~~~~~ main.cpp:123:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (idx < v.size() && v[idx].second <= events[j].y) ~~~~^~~~~~~~~~