Compilare: main.cpp: In function 'bool cauta(int)': main.cpp:17:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < tab[r].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:45:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:46:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 1; j < v.size(); j++) ~~^~~~~~~~~~ main.cpp: At global scope: main.cpp:60:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^