Compilare: main.cpp: In function 'int main()': main.cpp:31:24: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(i&(1<<j)!=0) ~~~~~~^~~ main.cpp:33:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<g[j].size(); k++) ~^~~~~~~~~~~~ main.cpp:35:38: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(i&(1<<g[j][k])!=0) ~~~~~~~~~~~~^~~ main.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[0].size();i++) ~^~~~~~~~~~~~