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- #include <iostream>
- using namespace std;
- int cautare(int a[1001],int st,int dr,int x){
- int m=(st+dr)/2;
- if(st>dr) return -1;
- if(a[m]>x) return cautare(a,m+1,dr,x);
- if(a[m]<x) return cautare (a,st,m-1,x);
- if(a[m]==x) return m;
- }
- int main()
- {
- int a[1001]={},st,dr,x,n;
- cin>>n;
- for(int i=1;i<=n;i++){
- cin>>a[i];
- }
- cin>>x;
- cout<<cautare(a,1,n,x);
- return 0;
- }
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