Pagini recente » Cod sursa (job #3131774) | Cod sursa (job #2393129) | Cod sursa (job #559918) | Cod sursa (job #1274474) | Cod sursa (job #2212421)
#include<bits/stdc++.h>
using namespace std;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
int a[100100],n,m,x,y;
int binarySearch0(int i, int n, int x){
int mid;
while(i <= n){
mid = i + (n-i)/2;
if (a[mid]<=x) i = mid + 1;
else n = mid - 1;
}
mid = (i+n) / 2;
if(a[mid] > x) mid--;
if(a[mid] == x) return mid;
return -1;
}
int binarySearch1(int i, int n, int x){
int mid;
while(i < n){
mid = i + (n-i)/2;
if (a[mid]<=x) i = mid + 1;
else n = mid;
}
mid = (i+n) / 2;
if(a[mid] > x) --mid;
return mid;
}
int binarySearch2(int i, int n, int x){
int mid;
while(i < n){
mid = i + (n-i)/2;
if (a[mid]<x) i = mid + 1;
else n = mid;
}
mid = (i+n) / 2;
if(a[mid] < x) ++mid;
return mid;
}
int main(){
in >> n;
for (int i=1; i<=n; i++)
in >> a[i];
in >> m;
for (int i=1; i<=m; i++){
in >> x >> y;
if (x==0) out << binarySearch0(1,n,y) << "\n";
else if (x==1) out << binarySearch1(1,n,y) << "\n";
else out << binarySearch2(1,n,y) << "\n";
}
return 0;
}