Cod sursa(job #2429791)

Utilizator mihaimodiMihai Modi mihaimodi Data 11 iunie 2019 09:45:30
Problema Distincte Scor 50
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.35 kb
#include <fstream>
#include <algorithm>
#define mod 666013
using namespace std;
ifstream fin("distincte.in");
ofstream fout("distincte.out");
struct vec
{
    int ord,st,dr,sol;
}a[100001];
int cmp(vec a, vec b)
{
    if(a.dr==b.dr)
        return a.st<b.st;
    return a.dr<b.dr;
}
int cmp2(vec a, vec b)
{
    return a.ord<b.ord;
}
int v[100005],fr[100005],aib[100005],sol[100001];
int n,k,m;
int query(int x)
{
    int s=0;
    while(x>0)
    {
        s=(s+aib[x])%mod;
        x-=(x&(-x));
    }
    return s;
}
void update(int x, int val)
{
    while(x<=n)
    {
        aib[x]=(aib[x]+val)%mod;
        x+=(x&(-x));
    }
}

int main()
{
    fin>>n>>k>>m;
    for(int i=1;i<=n;i++)
        fin>>v[i];
    for(int i=1;i<=m;i++)
    {
        fin>>a[i].st>>a[i].dr;
        a[i].ord=i;
    }
    sort(a+1,a+m+1,cmp);
    int j=1;
    for(int i=1;i<=m;i++)
    {
        while(j<=a[i].dr)
        {
            if(fr[v[j]]>0)
                update(fr[v[j]],-v[j]);
            update(j,v[j]);
            fr[v[j]]=j;
            j++;
        }
        a[i].sol=query(a[i].dr)-query(a[i].st-1);
        if(a[i].sol<0)
            a[i].sol+=mod;
        while(a[i].sol>mod)
            a[i].sol-=mod;
    }
    sort(a+1,a+m+1,cmp2);
    for(int i=1;i<=m;i++)
        fout<<a[i].sol<<'\n';
    return 0;
}