Compilare: main.cpp: In function 'bool Check(int)': main.cpp:48:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < min(s[0].size(), s[line].size());++i) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void FindPower(int)': main.cpp:62:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < words.size();++i) ~~^~~~~~~~~~~~~~ main.cpp:64:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (words[i].second >= s[line].size()) main.cpp:61:6: warning: unused variable 'p' [-Wunused-variable] int p = 0; ^ main.cpp: In function 'int main()': main.cpp:95:6: warning: unused variable 'pos' [-Wunused-variable] int pos; ^~~