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Cod sursa(job #850397)
#include<fstream>
using namespace std;
int v[100001] ;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int bin0(int x, int high){
int low=1 , mid ;
while(low<=high){
mid=(low+high)/2;
if(x<=v[mid])
high=mid+1;
else
low=mid-1;
}
mid=(low+high)/2;
if (v[mid] > x) mid--;
if (v[mid] == x)
return mid;
return -1;
}
int bin1(int x, int high){
int low=1 , mid ;
while(low<high){
mid=(low+high)/2;
if(x<=v[mid])
high=mid+1;
else
low=mid;
}
mid=(high+low)/2;
return -1;
}
int bin2(int x, int high){
int low=1 , mid ;
while(low<high){
mid=(low+high)/2;
if(x<=v[mid])
high=mid+1;
else
low=mid;
}
mid=(low+high)/2;
return -1;
}
int main(){
int N, M;
fin>>N;
for(int i=1 ; i<=N ; i++)
fin>>v[i];
fin>>M;
int tip , val ;
while(--M){
fin>>tip>>val;
if(tip==0)
fout<<bin0(val,N)<<"\n";
else if(tip==1)
fout<<bin1(val,N)<<"\n";
else
fout<<bin2(val,N)<<"\n";
}
}