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Cod sursa(job #840867)
#include<iostream>
#include<stdio.h>
using namespace std;
int bs0(unsigned int *v, int key, int min, int max){
int mid;
while(min <= max){
mid = (min+max)/2;
if(v[mid] == key){
return mid;
}
if(v[mid] < key){
min = mid + 1;
continue;
}
if(v[mid] > key){
max = mid - 1;
continue;
}
}
return -1;
}
int bs1(unsigned int *v, int key, int min, int max){
int mid;
while(min <= max){
mid = (min+max)/2;
if((v[mid] <= key) && (v[mid+1] > key))
return mid;
if((v[mid] <= key) && (v[mid+1] <= key)){
min = mid + 1;
continue;
}
if(v[mid] > key){
max = mid - 1;
continue;
}
}
return mid;
}
int bs2(unsigned int *v, int key, int min, int max){
int mid;
while(min <= max){
mid = (min+max)/2;
if((v[mid] >= key) && (v[mid-1] < key))
return mid;
if((v[mid] >= key) && (v[mid-1] >= key)){
max = mid - 1;
continue;
}
if(v[mid] < key){
min = mid + 1;
continue;
}
}
return mid;
}
int main(){
int N, M, i, select, poz;
unsigned int *v, x;
freopen("cautbin.in", "r", stdin);
freopen("cautbin.out", "w", stdout);
cin >> N;
v = new unsigned int[N];
for(i = 0; i < N; i++)
cin >> v[i];
cin >> M;
for(i = 0; i < M; i++){
cin >> select;
cin >> x;
if(select == 0){
poz = bs0(v, x, 0, N-1);
while(v[poz+1] == x){
// cout << "select 0" << endl;
poz = bs0(v, x, poz+1, N-1);
}
if(poz != -1)
cout << poz + 1 << endl;
else
cout << poz << endl;
}
if(select == 1){
// cout << "select 1" << endl;
cout << bs1(v, x, 0, N-1) + 1 << endl;
}
if(select == 2){
// cout << "select 2" << endl;
cout << bs2(v, x, 0, N-1) + 1 << endl;
}
}
return 0;
}