Compilare: main.cpp: In function 'int main()': main.cpp:50:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[nod].size();j++) { ~^~~~~~~~~~~~~~ main.cpp:66:27: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] for(mask=0; mask<(1<<k+2); mask++) { ~^~ main.cpp:68:27: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(mask&(1<<i)==0) continue; ~~~~~~^~~ main.cpp:70:35: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(mask&(1<<t)==0) continue; ~~~~~~^~~