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Cod sursa(job #881752)
#include <stdio.h>
#include <stdlib.h>
int solve0 (int v[], int val, int hi)
{
int lo, mid;
lo = 1;
while (lo <= hi)
{
mid = lo + (hi-lo)/2;
if (v[mid] <= val) lo = mid + 1;
else hi = mid - 1;
}
mid = lo + (hi-lo)/2;
if (v[mid] > val) mid--;
if (v[mid] == val) return mid;
return -1;
}
int solve1 (int v[], int val, int hi)
{
int lo, mid;
lo = 1;
while (lo <= hi)
{
mid = lo + (hi-lo)/2;
if (v[mid] <= val) lo = mid + 1;
else hi = mid - 1;
}
mid = lo + (hi-lo)/2;
if (v[mid] > val) mid--;
return mid;
}
int solve2 (int v[], int val, int hi)
{
int lo, mid;
lo = 1;
while (lo <= hi)
{
mid = lo + (hi-lo)/2;
if (v[mid] < val) lo = mid + 1;
else hi = mid - 1;
}
mid = lo + (hi-lo)/2;
if (v[mid] < val) mid++;
return mid;
}
int main()
{
freopen("cautbin.in","r",stdin);
freopen("cautbin.out","w",stdout);
int n,i;
int v[100010];
scanf("%d",&n);
for (i = 1; i <= n; i++)
scanf("%d", &v[i]);
int m,tip,val;
scanf("%d", &m);
while (m--)
{
scanf("%d %d", &tip, &val);
if (tip == 0)
printf("%d\n", solve0(v, val, n));
if (tip == 1)
printf("%d\n", solve1(v, val, n));
if (tip == 2)
printf("%d\n", solve2(v, val, n));
}
return 0;
}