Compilare: main.cpp: In function 'void hasha()': main.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s1.size(); i ++) { ~~^~~~~~~~~~~ main.cpp: In function 'void hashb()': main.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s2.size(); i ++) { ~~^~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:49:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = n - 1; i < s2.size(); i ++) { ~~^~~~~~~~~~~ main.cpp:66:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); i ++) { ~~^~~~~~~~~~~~