This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
const int val1 = 80;
const int logval = 3;
int n;
int anc[400005][logval];
int v[400005];
long long vals[400005];
int ult[400005];
/// 500000 * (4 + 4 + 8 + x*4) <= 20 000 000
/// 500000 * 16 + 500000 * x*4 <= 20 000 000
/// x <= 6
int put[logval];
void calc_anc()
{
for(int p=1;p<logval;p++)
{
for(int i=1;i<=n+2;i++)
{
anc[i][p]=anc[i][p-1];
for(int j=0;j<val1-1;j++)
anc[i][p]=anc[anc[i][p]][p-1];
}
}
}
int norma(long long x)
{
return (lower_bound(vals,vals+1+n,x) - vals);
}
signed main()
{
ios_base::sync_with_stdio(0);cin.tie(0);
put[0]=1;
for(int i=1;i<logval;i++)
put[i]=put[i-1]*val1;
long long tot=0;
cin>>n;
int a;
for(int i=1;i<=n;i++)
{
cin>>v[i];
vals[i]=vals[i-1]+v[i];
tot+=v[i];
}
sort(vals,vals+1+n);
long long suff=0;
anc[n+1][0]=n+2;
anc[n+2][0]=n+2;
for(int i=n;i>0;i--)
{
anc[i][0]=anc[i+1][0];
ult[norma(tot-suff)]=i;
suff+=v[i];
if(ult[norma(tot-suff)]!=0)
anc[i][0]=min(anc[i][0], ult[norma(tot-suff)]+1);
}
calc_anc();
int cntq,b;
cin>>cntq;
for(int i=0;i<cntq;i++)
{
cin>>a>>b;
int rez=0;
for(int p=logval-1;p>=0;p--)
{
for(int j=0;j<val1-1;j++)
{
if(anc[a][p]-1<=b)
{
rez+=put[p];
a=anc[a][p];
}
}
}
cout<<rez<<"\n";
}
return 0;
}
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