Compilare: main.cpp: In function 'int normalize(std::vector<Event>&)': main.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ev.size(); ++i) { ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:131:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &N); ^ main.cpp:133:78: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &rect[i].x1, &rect[i].y1, &rect[i].x2, &rect[i].y2); ^