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Cod sursa(job #397177)
#include<stdio.h>
#include<algorithm>
using namespace std;
#define prim 666013
struct vect
{
int st,dr,poz;
};
int n,k,m;
int v[100002],f[100002],sol[100002],csol[100002];
long long aib[100002];
vect v1[100002];
inline bool cmp(vect a, vect b)
{
return a.dr<b.dr;
}
inline int lsb(int x){return x&-x;}
void update(int poz, int val)
{
while(poz<=n)
{
aib[poz]+=val;
poz+=lsb(poz);
}
}
int query(int poz)
{
int sol=0;
while(poz)
{
sol=((long long)sol+aib[poz])%prim;
poz-=lsb(poz);
}
return sol;
}
int main()
{
freopen("distincte.in","r",stdin);
freopen("distincte.out","w",stdout);
scanf("%d%d%d",&n,&k,&m);
int i,j;
for(i=1;i<=n;i++)
scanf("%d",&v[i]);
for(i=1;i<=m;i++)
scanf("%d%d",&v1[i].st,&v1[i].dr),v1[i].poz=i;
sort(v1+1,v1+m+1,cmp);
for(i=1;i<=m;i++)
{
for(j=v1[i-1].dr+1;j<=v1[i].dr;j++)
{
if(f[v[j]]==0)
{
f[v[j]]=j;
update(j,v[j]);
}
else
{
update(f[v[j]],-v[j]);
update(j,v[j]);
f[v[j]]=j;
}
}
sol[i]=query(v1[i].dr)-query(v1[i].st-1);
if(sol[i]<0)
sol[i]+=prim;
}
for(i=1;i<=m;i++)
csol[v1[i].poz]=sol[i];
for(i=1;i<=m;i++)
printf("%d\n",csol[i]);
return 0;
}