Pagini recente » Cod sursa (job #1727262) | Cod sursa (job #271327) | Cod sursa (job #814356) | Cod sursa (job #3138929) | Cod sursa (job #2568919)
#include <bits/stdc++.h>
using namespace std;
const int NMAX = 100005;
const int LOGMAX = 20;
int N, M, rmq[LOGMAX][NMAX], lg[LOGMAX];
void BuildRMQ()
{
for (int i = 2;i <= N;++i)
lg[i] = lg[i >> 1] + 1;
for (int p = 1;(1 << p) <= N;++p)
for (int i = 1;i + (1 << p) < N;++i)
rmq[p][i] = min(rmq[p - 1][i], rmq[p - 1][i + (1 << (p - 1))]);
}
int QueryRMQ(int x, int y)
{
if (y < x)
swap(x, y);
int p = lg[y - x + 1];
return min(rmq[p][x], rmq[p][y - (1 << p) + 1]);
}
int main()
{
ifstream fin("rmq.in");
ofstream fout("rmq.out");
fin >> N >> M;
for (int i = 1;i <= N;++i)
fin >> rmq[0][i];
for (int i = 1;i <= M;++i)
{
int x, y;
fin >> x >> y;
fout << QueryRMQ(x, y) << "\n";
}
fin.close();
fout.close();
return 0;
}