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#include<fstream>
using namespace std;
int main ()
{
ifstream f;
ofstream g;
f.open("stramosi.in");
g.open("stramosi.out");
int N,M,Q,P;
f>>N>>M;
int s[250000],i;
for(i=0;i<N;i++)
{
f>>s[i];
}
for(i=0;i<M;i++)
{
f>>Q>>P;
if(Q-P<0){
g << 0<< endl;
} else if (Q >= N){
Q = N-1;
g<<s[Q-P]<<endl;
}
else {
g<<s[Q-P]<<endl;
}
}
f.close();
g.close();
return 0;
}