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Cod sursa(job #195922)
#include <cstdio>
#include <vector>
using namespace std;
vector <int> v;
int n,m,w;
int cautare0(int st, int dr)
{
m=st+(dr-st)/2;
if (v[m]==w)
{
printf("%d\n", m+1);
return 0;
}
if (v[m]>w)
if (m==0 || v[m-1]<w)
return 1;
else
return cautare0(st,m-1);
else
if (m==n-1 || v[m+1]>w)
return 1;
else
return cautare0(m+1,dr);
}
void cautare2(int st, int dr)
{
m=st+(dr-st)/2;
if (v[m]==w)
{
while (m && v[m-1]==v[m])
--m;
printf("%d\n", m+1);
}
else
if (v[m]>w)
if (m==0 || v[m-1]<w)
printf("%d\n", m+1);
else
cautare2(st,m-1);
else
cautare2(m+1,dr);
}
void cautare1(int st, int dr)
{
m=st+(dr-st)/2;
if (v[m]==w)
printf("%d\n", m+1);
else
if (v[m]>w)
cautare1(st,m-1);
else
if (m==n-1 || v[m+1]>w)
printf("%d\n",m+1);
else
cautare1(m+1,dr);
}
int main()
{
freopen("cautbin.in","r",stdin);
freopen("cautbin.out","w",stdout);
scanf("%d", &n);
int x,q,t;
for (int i=0; i<n; i++)
{
scanf("%d", &x);
v.push_back(x);
}
for (scanf("%d", &t); t; t--)
{
scanf("%d%d", &q, &w);
if (!q)
{
if (cautare0(0,n-1))
printf("-1\n");
}
else if (q==1)
cautare1(0,n-1);
else
cautare2(0,n-1);
}
return 0;
}