Compilare: main.cpp: In function 'void Read()': main.cpp:28:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < cuv.size(); ++ i ) { ~~^~~~~~~~~~~~ main.cpp:36:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < length; ++ i ) { ~~^~~~~~~~ main.cpp: In function 'bool Verif(unsigned int)': main.cpp:42:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < fr[val % MOD].size(); ++ i ) { ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Solve()': main.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < length; ++ i ) { ~~^~~~~~~~ main.cpp:59:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = length; i < text.size(); ++ i ) { ~~^~~~~~~~~~~~~