AcWing 789. 数的范围
原题链接
简单
作者:
轩_69
,
2021-08-27 20:18:03
,
所有人可见
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阅读 147
#include<iostream>
using namespace std;
int main()
{
const int N = 1e5;
int n, q, temp[N];
scanf("%d%d", &n, &q);
for(int i = 0; i < n; i++) scanf("%d", &temp[i]);
while(q--){
int p, i;
scanf("%d",&p);
int l = 0, r = n-1;
while(l < r){
int mid = l + r >> 1;
if(temp[mid] >= p) r = mid;
else l = mid + 1;
} //循环最后 l == r
if(temp[l] != p) printf("-1 -1\n");
else{
cout << l <<' ';
l = 0, r = n-1;
while(l < r){
int mid = l + r + 1>> 1;
if(temp[mid] <= p) l = mid;
else r = mid - 1;
}
cout << r << endl;
}
}
}