Cod sursa(job #2064425)

Utilizator circeanubogdanCirceanu Bogdan circeanubogdan Data 12 noiembrie 2017 12:42:17
Problema Distincte Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 2.93 kb
#include <fstream>
#include <algorithm>
#define DIM 100005
#define MOD 666013

using namespace std;

class InParser {
private:
    FILE *fin;
    char *buff;
    int sp;

    char read_ch() {
        ++sp;
        if (sp == 4096) {
            sp = 0;
            fread(buff, 1, 4096, fin);
        }
        return buff[sp];
    }

public:
    InParser(const char* nume) {
        fin = fopen(nume, "r");
        buff = new char[4096]();
        sp = 4095;
    }

    InParser& operator >> (int &n) {
        char c;
        while (!isdigit(c = read_ch()) && c != '-');
        int sgn = 1;
        if (c == '-') {
            n = 0;
            sgn = -1;
        } else {
            n = c - '0';
        }
        while (isdigit(c = read_ch())) {
            n = 10 * n + c - '0';
        }
        n *= sgn;
        return *this;
    }

    InParser& operator >> (long long &n) {
        char c;
        n = 0;
        while (!isdigit(c = read_ch()) && c != '-');
        long long sgn = 1;
        if (c == '-') {
            n = 0;
            sgn = -1;
        } else {
            n = c - '0';
        }
        while (isdigit(c = read_ch())) {
            n = 10 * n + c - '0';
        }
        n *= sgn;
        return *this;
    }
} f("distincte.in");
ofstream g("distincte.out");

int n, m, k, aint[4 * DIM], s, v[DIM], poz[DIM], sol[DIM];

void update(int nod, int st, int dr, int poz, int val){
    if(st == dr && st == poz){
        aint[nod] = val;
        return;
    }
    int mid = (st + dr) / 2;
    if(poz <= mid)
        update(2 * nod, st, mid, poz, val);
    else
        update(2 * nod + 1, mid + 1, dr, poz, val);

    aint[nod] = (aint[2 * nod] + aint[2 * nod + 1]) % MOD;
}

void query(int nod, int st, int dr, int a, int b){
    if(a <= st && b >= dr){
        s += aint[nod];
        s %= MOD;
        return;
    }
    int mid = (st + dr) / 2;
    if(a <= mid)
        query(2 * nod, st, mid, a, b);
    if(b > mid)
        query(2 * nod + 1, mid + 1, dr, a, b);
}

struct quer{
    int x, y, init;
}q[DIM];

bool cmp(quer a, quer b){
    if(a.y == b.y)
        return a.x < b.x;
    return a.y < b.y;
}

int main()
{
    f>>n>>k>>m;
    for(int i = 1; i <= n; ++ i)
        f>>v[i];
    for(int i = 1; i <= m; ++ i){
        f>>q[i].x>>q[i].y;
        q[i].init = i;
    }

    sort(q + 1, q + m + 1, cmp);
    int cnt = 1;

    for(int i = 1; i <= m; ++ i){
        int N = q[i].y;
        for(; cnt <= q[i].y; ++cnt){
            if(!poz[v[cnt]])
                update(1, 1, n, cnt, v[cnt]);
            else{
                update(1, 1, n, poz[v[cnt]], 0);
                update(1, 1, n, cnt, v[cnt]);

            }
            poz[v[cnt]] = cnt;
        }
        s = 0;
        query(1, 1, n, q[i].x, q[i].y);
        sol[q[i].init] = s;
    }

    for(int i = 1; i <= m; ++ i)
        g<<sol[i]<<"\n";

    return 0;
}