Compilare: user.cpp: In function ‘void Del(int, int)’: user.cpp:17:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[x].size();i++) ^ user.cpp: In function ‘void Solve(int, int)’: user.cpp:43:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(l1++;l1<v[nod].size();l1++) ^ user.cpp:59:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(l2++;l2<v[nod].size();l2++) ^ user.cpp: In function ‘int main()’: user.cpp:82:9: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,vv,caz,x,y,a,b; ^ user.cpp: In function ‘void Solve(int, int)’: user.cpp:38:55: warning: array subscript is above array bounds [-Warray-bounds] { if (pas>n) {for(i=800005;i<=900005;i++) v[i][i]++; return ;} else pas++; ^