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Cod sursa(job #460575)
#include <stdio.h>
using namespace std;
int v[100001];
int m, n, i, j;
int nr, val;
int cauta0 (int x)
{
int st, dr, mijl;
st = 1;
dr = n;
while (st <= dr)
{
mijl = (st + dr) / 2;
if (x == v[mijl])
{
while (x == v[mijl])
mijl ++;
mijl --;
return mijl;
}
else if (x > v[mijl])
st = mijl + 1;
else if (x < v[mijl])
dr = mijl - 1;
}
return -1;
}
int cauta2 (int x)
{
int st, dr, mijl;
st = 1;
dr = n;
while (st <= dr)
{
mijl = (st + dr) / 2;
if (v[mijl] == x)
{
while (v[mijl] == x)
mijl --;
mijl ++;
return mijl;
}
else if (x > v[mijl])
st = mijl + 1;
else if (x < v[mijl])
dr = mijl - 1;
}
return -1;
}
int main ()
{
FILE *f = fopen ("cautbin.in","r");
FILE *g = fopen ("cautbin.out","w");
fscanf (f,"%d", &n);
for (i=1; i<=n; ++i)
fscanf (f,"%d", &v[i]);
fscanf (f,"%d", &m);
for (i=1; i<=m; ++i)
{
fscanf (f,"%d %d", &val, &nr);
if (val == 0)
fprintf (g,"%d\n", cauta0 (nr));
else if (val == 1)
{
while (cauta0(nr) == -1)
nr --;
fprintf (g,"%d\n", cauta0(nr));
}
else if (val == 2)
{
while (cauta2(nr) == -2)
nr ++;
fprintf (g,"%d\n", cauta2(nr));
}
}
fclose(g);
fclose(f);
return 0;
}