Compilare: main.cpp: In function 'bool findStr(int)': main.cpp:25:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (it == val) ~~~^~~~~~ main.cpp: In function 'uint toBase3(char*)': main.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s; ++i) ~~^~~ main.cpp: In function 'int main()': main.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = s; i < n; ++i) { ~~^~~