Compilare: user.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] #import<fstream> ^ user.cpp:3:49: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] int q[20][100005],i=2,j,x,y,n,m,lg[100005];main(){ ^ user.cpp: In function ‘int main()’: user.cpp:5:96: warning: operation on ‘j’ may be undefined [-Wsequence-point] for(i=1;(1<<i)<=n;i++)for(j=1;j+(1<<i)-1<=n;)q[i][j++]=std::min(q[i-1][j],q[i-1][j+(1<<(i-1))]); ^