Cod sursa(job #1973041)
Utilizator | Data | 24 aprilie 2017 11:59:33 | |
---|---|---|---|
Problema | Range minimum query | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.64 kb |
#include<fstream>
using namespace std;
ifstream fin("rmq.in");
ofstream fout("rmq.out");
int n,m,a,b,x,l,i,j;
int L[100005],D[18][100005];
int main(){
fin>>n>>m;
L[1]=0;
for(i=2;i<=n;i++){
L[i]=L[i/2]+1;
}
for(i=1;i<=n;i++){
fin>>D[0][i];
}
for(i=1;i<=L[n];i++){
for(j=1;j<=n;j++){
D[i][j]=D[i-1][j];
if(j+(1<<(i-1))<=n){
D[i][j]=min(D[i][j],D[i-1][j+(1<<(i-1))]);
}
}
}
for(i=1;i<=m;i++){
fin>>a>>b;
l=L[b-a+1];
fout<<min(D[l][a],D[l][b-(1<<l)+1])<<"\n";
}
return 0;
}