Mai intai trebuie sa te autentifici.
Cod sursa(job #3000214)
Utilizator | Data | 12 martie 2023 10:39:52 | |
---|---|---|---|
Problema | Range minimum query | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.85 kb |
#include <iostream>
#define INF 2000000000
using namespace std;
int n,m;
int T[100001][20];
int k,p;
int query(int st, int dr)
{
int rez;
rez=INF;
for (int c=k;c>=0;c--)
if (st+(1<<c)-1<=dr)
{
rez=min(rez,T[st][c]);
st=st+(1<<c);
}
return rez;
}
int main()
{
cin>>n;
for (int i=1;i<=n;i++)
cin>>T[i][0];
k=0;
p=1;
while (p*2<=n)
{
p=p*2;
k++;
}
/// se construieste T
for (int col=1;col<=k;col++)
for (int i=1;i<=n-(1<<col)+1;i++)
T[i][col]=min(T[i][col-1],T[i+(1<<(col-1))][col-1]);
/// se citesc interogarile si se raspunde la ele
cin>>m;
for (int i=1;i<=m;i++)
{
int st,dr;
cin>>st>>dr;
cout<<query(st,dr)<<"\n";
}
return 0;
}