Nu aveti permisiuni pentru a descarca fisierul grader_test6.ok
Cod sursa(job #1242753)
Utilizator | Data | 14 octombrie 2014 22:58:01 | |
---|---|---|---|
Problema | Cautare binara | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 1.59 kb |
#include <iostream>
#include <fstream>
#include <algorithm>
#define VMAX 100001
using namespace std;
ifstream fin ("cautbin.in");
ofstream fout ("cautbin.out");
int st, dr, mid; // CAUTARE BINARA
int v[VMAX], n, m, q, a, i;
int main()
{
fin >> n;
for (i=1; i<=n; i++)
fin >> v[i];
sort (v+1, v+n+1);
fin >> m;
for (i=1; i<=m; i++) {
q = -1;
a = -1;
st = -1;
dr = -1;
mid = -1;
fin >> q >> a;
if ( q == 0 ) {
st = v[1]; dr = v[n];
while ( st <= dr ) {
mid = st+(dr-st)/2;
if (a == v[mid]) {
st = mid + 1;
}
else {
dr = mid - 1;
}
}
if ( v[dr] == a )
fout << dr << '\n';
else
fout << "-1" << '\n';
}
if ( q == 1 ) {
st = v[1]; dr = v[n];
while ( st <= dr ) {
mid = st+(dr-st)/2;
if (a >= v[mid])
st = mid + 1;
else
dr = mid - 1;
}
fout << dr << '\n';
}
if ( q == 2 ) {
st = v[1]; dr = v[n];
while ( st <= dr ) {
mid = st+(dr-st)/2;
if (a <= v[mid])
dr = mid - 1;
else
st = mid + 1;
}
fout << st << '\n';
}
}
return 0;
}