Compilare: main.cpp: In function 'int main()': main.cpp:70:17: warning: suggest parentheses around operand of '!' or change '&' to '&&' or '!' to '~' [-Wparentheses] if (!mask&(1<<i)) ^~~~~ main.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<L[i+1].size();j++){ ~^~~~~~~~~~~~~~ main.cpp:75:21: warning: suggest parentheses around operand of '!' or change '&' to '&&' or '!' to '~' [-Wparentheses] if (!mask&(1<<(vecin-1))) ^~~~~ main.cpp:80:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<L[1].size();i++){ ~^~~~~~~~~~~~