Pagini recente » Cod sursa (job #2209296) | Cod sursa (job #2842734) | Cod sursa (job #1654438) | Cod sursa (job #2887120) | Cod sursa (job #2937456)
#include <bits/stdc++.h>
#include <fstream>
using namespace std;
#define MAX 500
int sp[MAX][MAX];
int lg[MAX];
int a[MAX];
void buildSparseTable(int arr[], int n)
{
for (int i = 0; i < n; i++)
sp[i][0] = arr[i];
int k = lg[n];
for (int j = 1; j <= k; j++) {
for (int i = 0; (i + (1<<j))-1 < n; i++) {
sp[i][j] = min(sp[i][j - 1], sp[i + (1<<(j-1)) ][j-1]);
}
}
}
int query(int i, int j)
{
int len = j-i+1;
int k = lg[j - i + 1];
return min(sp[i][k], sp[i+len-(1<<k)][k]);
}
int main()
{
ifstream cin("rmq.in");
ofstream cout("rmq.out");
int nop,mop,aaa,bbb;
cin>>nop>>mop;
for(int i=0;i<nop;i++)
cin>>a[i];
for(int i=2; i<=MAX; i++)
lg[i] = 1 + lg[i/2];
buildSparseTable(a, nop);
for(int i=0;i<mop;i++)
{
cin>>aaa>>bbb;
cout<<query(aaa-1, bbb-1)<<'\n';
}
return 0;
}