Cod sursa(job #2488242)

Utilizator AlexBosneag26Bosneag Alexandru AlexBosneag26 Data 6 noiembrie 2019 15:51:22
Problema Range minimum query Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.54 kb
#include <fstream>

using namespace std;

ifstream in("rmq.in");
ofstream out("rmq.out");

int v[100001],r[17][100001],log[100001];

int main()
{
    int n,m,l,p,q;
    in>>n>>m;
    for(int i=1; i<=n; i++)
        in>>v[i];
    for(int j=1; j<=n; j++)
        r[0][j]=v[j];
    for(int i=1; (1<<i)<=n; i++)
        for(int j=1; j+(1<<i)<=n+1; j++)
            r[i][j]=min(r[i-1][j],r[i-1][j+(1<<(i-1))]);
    for(int i=1; i<=m; i++)
    {
        in>>p>>q;
        l=log[q-p+1];
        out<<min(r[l][p],r[l][q-(1<<l)+1])<<"\n";

    }
    return 0;
}