Cod sursa(job #2429150)

Utilizator anamariatoaderAna Toader anamariatoader Data 8 iunie 2019 00:18:16
Problema Distincte Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.24 kb
#include <fstream>
#include <algorithm>
#define DM 100005
#define mod 666013

using namespace std;

ifstream fin("distincte.in");
ofstream fout("distincte.out");

int n,m,i,j,k,v[DM],aib[DM],fr[DM];
struct numar{
    int st,dr,nr,sol;
}a[DM];
int cmp(numar a, numar b){
    if(a.dr==b.dr)
        return a.st<b.st;
    return a.dr<b.dr;
}
int recmp(numar a, numar b){
    return a.nr<b.nr;
}

void update(int x, int val){
    while(x<=n){
        aib[x]=(aib[x]+val)%mod;
        x+=(x&(-x));
    }
}

int query(int x){
    int s=0;
    while(x>0){
        s=(s+aib[x])%mod;
        x-=(x&(-x));
    }
    return s;
}

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