Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[x].size(); i++) { ~~^~~~~~~~~~~~~ main.cpp: In function 'void RMQ()': main.cpp:44:28: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] if(l[rmq[i-1][j+1<<(i-1)]] < l[rmq[i][j]]) ~^~ main.cpp:45:39: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] rmq[i][j] = rmq[i-1][j+1<<(i-1)]; ~^~