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Cod sursa(job #440384)
#include<stdio.h>
int v[100005],M[100005][18],n,m,i,x,y,j,lg[100005];
int main()
{
freopen("rmq.in","r",stdin);
freopen("rmq.out","w",stdout);
scanf("%d %d",&n,&m);
for(i=0;i<n;i++)
{
scanf("%d",&v[i]);
M[i][0]=v[i];
if(i)lg[i+1]=lg[(i+1)>>1]+1;
}
for(j=1;j<=lg[n];j++)
for(i=0;j<=lg[n-i];i++)
if(M[i][j-1]<=M[i+(1<<(j-1))][j-1])
M[i][j]=M[i][j-1];
else M[i][j]=M[i+(1<<(j-1))][j-1];
for(i=0;i<m;i++)
{
scanf("%d %d",&x,&y);
x--;
y--;
int k=lg[y-x+1];
if(M[x][k]<=M[y-(1<<k)+1][k])
printf("%d\n",M[x][k]);
else printf("%d\n",M[y-(1<<k)+1][k]);
}
return 0;
}