Compilare: main.cpp: In function 'void {anonymous}::solve()': main.cpp:58:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); ++i) { ~~^~~~~~~~~~ main.cpp:71:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < s.size(); ++i) ~~^~~~~~~~~~ main.cpp:76:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (max(st.marime, dr.marime) < s.size()) { ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:85:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (st.marime == s.size()) { ~~~~~~~~~~^~~~~~~~~~~