Pagini recente » Cod sursa (job #1275583) | Cod sursa (job #373537) | Cod sursa (job #2267101) | Cod sursa (job #2893074) | Cod sursa (job #1787897)
#include <iostream>
#include <fstream>
#include <cmath>
using namespace std;
int rmq[20][250100];
int v[25];
int n, m, i, j, p2;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int main()
{
for(i=0; i<25; ++i)
v[i]=(1<<i);
f>>n>>m;
for(i=1; i<=n; ++i)
{
f>>rmq[0][i];
}
int k=log2(n);
for(i=1; i<=k; ++i)
{
for(j=1; j<=n; ++j)
rmq[i][j]=rmq[i-1][rmq[i-1][j]];
}
int p,q;
for(i=1; i<=m; ++i)
{
f>>p>>q;
while(q && p)
{
p2=1;
for(j=0; p2*2<=q; ++j)
p2*=2;
p=rmq[j][p];
q-=p2;
}
g<<p<<'\n';
}
}