Compilare: main.cpp: In function 'int main()': main.cpp:64:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=lin.size();i++) ~^~~~~~~~~~~~ main.cpp:65:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=col.size();j++) ~^~~~~~~~~~~~ main.cpp: In function 'int caut_bin(int, int, std::vector<int>, int)': main.cpp:20:1: warning: control reaches end of non-void function [-Wreturn-type] } ^