#include <vector>
#include <fstream>
using namespace std;
#define nmax 100010
#define lmax 20
ifstream f("rmq.in");
ofstream g("rmq.out"); 
int n, m, v[nmax], rmq[nmax][lmax], lg[nmax];
int main() {
   f >> n >> m;
   for(int i=0; i<n; i++) {
      f >> v[i];
      rmq[i][0] = i;
   }
   for(int j=1; (1<<j)<=n; j++)
   for(int i=0; i+(1<<j)-1<n; i++)
      if( v[ rmq[i][j-1] ] < v[ rmq[i+(1<<(j-1))][j-1] ] )
         rmq[i][j] = rmq[i][j-1];
      else
         rmq[i][j] = rmq[i+(1<<(j-1))][j-1];         
   for(int i=2; i<=n; i++)
      lg[i] = lg[i>>1] + 1;
   for(int i=0; i<m; i++) {
      int x, y;
      f>>x>>y;
      x--; y--;
      int k = lg[y-x+1];
      g<<min(v[rmq[x][k]],v[rmq[y-(1<<k)+1][k]]) << '\n';
   }
   return 0;
}