Pagini recente » Cod sursa (job #2757448) | Cod sursa (job #638499) | Cod sursa (job #2585065) | Cod sursa (job #106648) | Cod sursa (job #1147934)
#include <stdio.h>
using namespace std;
int n, a[100010];
int caut0(int st, int dr, int v)
{
int m;
while (st<dr)
{
m=st+((dr-st)>>1);
if (a[m]<=v)
st=m+1;
else
dr=m-1;
}
m=st+((dr-st)>>1);
if (a[m]>v && a[m-1]==v)
return m-1;
return -1;
}
int caut1(int st, int dr, int v)
{
int m;
while (st<dr)
{
m=st+((dr-st)>>1);
if (a[m]<=v)
st=m+1;
else
dr=m;
}
m=st+((dr-st)>>1);
if (a[m]>v)
m--;
return m;
}
int caut2(int st, int dr, int v)
{
int m;
while (st<dr)
{
m=st+((dr-st)>>1);
if (a[m]<=v)
dr=m-1;
else
st=m;
}
m=st+((dr-st)>>1);
if (a[m]<v)
m++;
return m;
}
int main()
{
freopen("cautbin.in", "r", stdin);
freopen("cautbin.out", "w", stdout);
scanf("%d", &n);
for (int i=1; i<=n; i++)
scanf("%d", &a[i]);
int T, m, v;
for (scanf("%d", &T); T; T--)
{
scanf("%d %d", &m, &v);
if (m==0)
printf("%d\n", caut0(1, n, v));
else if (m==1)
printf("%d\n", caut1(1, n, v));
else if (m==2)
printf("%d\n", caut2(1, n, v));
}
return 0;
}