Compilare: main.cpp: In function 'int main()': main.cpp:196:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currOi < oi.size() && oi[currOi].first == i) ~~~~~~~^~~~~~~~~~~ main.cpp:201:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currDr < dr.size() && dr[currDr].first == 0) ~~~~~~~^~~~~~~~~~~ main.cpp:211:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currOi < oi.size() && oi[currOi].first == i) ~~~~~~~^~~~~~~~~~~ main.cpp:214:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currOi2 < oi.size() && oi[currOi2].first == i - h - 1) ~~~~~~~~^~~~~~~~~~~ main.cpp:217:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currDr < dr.size() && dr[currDr].first == i - h) ~~~~~~~^~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:14:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^