AfisMinime

#include<stdio.h>
#include<algorithm>
using namespace std;
int r[100001][17],v[100001];
int main()
{
    FILE*fin,*fout;
    int n,m,i,j,a,b,rez,l;
    fin=fopen("afisminime.in","r");
    fout=fopen("afisminime.out","w");
    fscanf(fin,"%d%d",&n,&m);
    v[1]=0;
    for(i=2;i<=n;i++)
        v[i]=1+v[i/2];
    for(i=1;i<=n;i++)
    {
        fscanf(fin,"%d",&r[i][0]);
        for(j=1;(1<<j)<=i;j++)
            r[i][j]=min(r[i-(1<<(j-1))][j-1],r[i][j-1]);
    }
    for(i=1;i<=m;i++)
    {
        fscanf(fin,"%d%d",&a,&b);
        l=v[b-a+1];
        rez=min(r[a+(1<<l)-1][l],r[b][l]);
        fprintf(fout,"%d\n",rez);
    }
    fclose(fout);
    fclose(fin);
    return 0;
}