Cod sursa(job #2569638)

Utilizator BitwiseIonita Filip Arian Bitwise Data 4 martie 2020 12:58:37
Problema Range minimum query Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.54 kb
#include<bits/stdc++.h>
using namespace std;
ifstream f("rmq.in");
ofstream g("rmq.out");
const int N = 100010;
int n,m,i,p,P,st,mi,dr,rmq[17][N];
int main()
{
    f>>n;
    for(i=1;i<=n;i++)
        f>>rmq[0][i];
    for(i=1,p=1,P=2;P<=n;i++,p*=2,P*=2)
        for(st=1,mi=p+1,dr=P;dr<=n;st++,mi++,dr++)
            rmq[i][st]=min(rmq[i-1][st],rmq[i-1][mi]);
    for(;m;m--)
    {
        f>>st>>dr;
        i=31-__builtin_clz(dr-st+1);
        p=1<<i;
        g<<min(rmq[i][st],rmq[i][dr-p+1])<<'\n';
    }
    return 0;
}