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Cod sursa(job #736418)
#include<fstream>
using namespace std;
int v[100000];
int binara0(int p,int u,int val)
{
int m;
while(p<=u)
{
m=(p+u)/2;
if(v[m]>val)
u=m-1;
else p=m+1;
}
m=(p+u)/2;
if(v[m]>val) m--;
if(v[m]==val) return m;
return -1;
}
int binara1(int p,int u,int val)
{
int m;
while(p<u)
{
m=(p+u)/2;
if(v[m]>val)
u=m;
else
p=m+1;
}
m=(p+u)/2;
if(v[m]>val) m--;
return m;
}
int binara2(int p,int u,int val)
{
int m;
while(p<u)
{
m=(p+u)/2;
if(v[m]>=val)
u=m;
else
p=m+1;
}
m=(p+u)/2;
if(v[m]<val)
m++;
return m;
}
int main()
{
int n,i,y,t,x;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
f>>n;
for(i=1;i<=n;i++)
f>>v[i];
f>>y;
for(i=1;i<=y;i++)
{
f>>t>>x;
if(t==0)
g<<binara0(1,n,x)<<endl;
if(t==1)
g<<binara1(1,n,x)<<endl;
if(t==2)
g<<binara2(1,n,x)<<endl;
}
return 0;
}