Compilare: user.cpp: In function ‘void euler(int, int)’: user.cpp:18:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[nod].size(); i ++) ^ user.cpp: In function ‘void solve()’: user.cpp:62:30: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] if( (j + (1 << i - 1) <= k) && (N[ D[i][j] ] > N[ D[i - 1][ j + (1 << (i - 1)) ] ]) ) ^ user.cpp:79:23: warning: left operand of comma operator has no effect [-Wunused-value] switch(a, b); ^