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Cod sursa(job #998655)
#include <fstream>
#include <algorithm>
using namespace std;
int aib[100005],n,frec[100005],ante[100005],v[100005],real[100005],fin[100005];
#define lsb(x) (x&(-x))
#define mod 666013
void update(int x,int val)
{
if(x==0)
return;
val%=mod;
real[x]=val;
for(;x<=n;x+=lsb(x))
aib[x]=(aib[x]+val)%mod;
}
int query(int x)
{
int sum=0;
for(;x>=1;x-=lsb(x))
sum=(sum+aib[x])%mod;
return sum;
}
struct segm
{
int st,dr;
int init;
}intreb[100005];
bool operator<(const segm &a,const segm &b)
{
if(a.dr<b.dr)
return 1;
else if(a.dr==b.dr)
if(a.st<b.st)
return 1;
return 0;
}
int main()
{
ifstream cin("distincte.in");
ofstream cout("distincte.out");
int m=0,k,i,poz=0;
cin>>n>>k>>m;
for(i=1;i<=n;i++)
{
cin>>v[i];
ante[i]=frec[v[i]];
//cout<<ante[i]<<' ';
frec[v[i]]=i;
}
for(i=0;i<m;i++)
{
cin>>intreb[i].st>>intreb[i].dr;
intreb[i].init=i;
}
sort(intreb,intreb+m);
for(i=1;i<=n;i++)
{
update(ante[i],-real[ante[i]]);
update(i,v[i]);
while(intreb[poz].dr==i)
{
fin[intreb[poz].init]=(query(intreb[poz].dr)-query(intreb[poz].st-1))%mod;
poz++;
}
}
for(i=0;i<m;i++)
cout<<fin[i]<<'\n';
cin.close();
cout.close();
return 0;
}