Nu aveti permisiuni pentru a descarca fisierul grader_test3.in
Cod sursa(job #1512509)
| Utilizator | Data | 28 octombrie 2015 10:07:28 | |
|---|---|---|---|
| Problema | Cautare binara | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 1 kb |
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n, i, v[100001], ii, m, c, x, st, dr, mid;
int main () {
fin>>n;
for(i=1;i<=n;i++)
fin>>v[i];
fin>>m;
for(ii=1;ii<=m;ii++) {
fin>>c>>x;
st=1;
dr=n;
while(st<=dr) {
mid=(st + dr) / 2;
if(v[mid]<=x)
st = mid + 1;
else
dr = mid - 1;
}
if(c==0 && v[dr]==x)
fout<<dr;
else
if(v[dr]!=x)
fout<<-1;
if(c==1 && v[dr]==x && dr>1)
fout<<dr;
if(c==2) {
st=1;
dr=n;
while(st<=dr){
mid = ( st + dr ) / 2;
if(v[mid]<x)
st=mid+1;
else
dr=mid-1;
}
fout<<st;
}
fout<<"\n";
}
return 0;
}
