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Cod sursa(job #818657)
#include<fstream>
using namespace std;
int v[100],x,n,u,m;
int poz(int x, int s, int d,int u)
{int mid=s+(d-s)/2;
switch (u)
{
case 0:
if(d-s<=1)
{
if (v[mid] > x) mid--;
if (v[mid] == x)
return mid+1;
else
return -1;
}
if(v[mid]>x) return poz(x,s,mid-1,u);
else return poz(x,mid+1,d,u);
case 1:
if(d-s<=1)
{
if (v[mid] > x) mid++;
return mid+1;
}
if(v[mid]>x) return poz(x,s,mid,u);
else return poz(x,mid+1,d,u);
case 2:
if(d-s<=1)
{
if (v[mid] < x) mid--;
return mid-1;
}
if(v[mid]>x) return poz(x,s,mid,u);
else return poz(x,mid+1,d,u);
}
}
int main()
{
ifstream f("cautbin.in");
ofstream g("cautbin.out");
f>>n;
for(int i=0;i<n;i++)
f>>v[i];
f>>m;
for(int i=0;i<m;i++)
{
f>>u>>x;
g<<poz(x,-1,n,u)<<endl;
}
f.close();
g.close();
return 0;
}